Zodiac PublicatonsBuying and using a digital cameraAfter a lifetime of taking photographs
I think that I can speak with authority on photographic
matters. From day one I have used an SLR (Single Lens
Reflex) camera, in other words "a real camera", starting with
a very basic Pentax. By the way, the name SLR is being misused
in many computer magazines. By SLR I mean a camera with a sensor
that works by momentary exposure (like film, you cannot record video
on it), has an optical view-finder and a detachable lens. When buying a digital camera you have
to first ask yourself what are you going to use it for?
One problem with this is the same as buying your first
computer, until you have used it for some time you have no idea
what you really want to do with it. For buying a camera I give
the same advice as buying computers "buy the best one you can afford".
There is only one problem, what is the best one? This
is a bit like "how long is a piece of string?" There are dozens
of brands and thousands of models out there. I recommend sticking
with the major brands. If you only want to take snap-shots
of the family (kids and dog) you only need something like
a Canon PowerShot A410 (about $200), Sony Cyber-shot DSCS60
(about $300) or a Panasonic Lumix DMC-LS1 (about $300). If
you are the slightest bit interested in nature you will probably
want to take some close-up photos (macro photography), in this
case FORGET POINT AND SHOOT CAMERAS. To take a decent macro photograph you
need 'depth of field', that is, a good depth of the subject
in sharp focus. To obtain a good depth of field you need
a small aperture setting in the lens
(large f stop number). Point and shoot cameras do not have
f stops larger than f8. For macro photography I never use
a f stop smaller than about f16 and often round f40 - f57 on my Nikon
D70s camera. Remember, big number, small hole, small hole sharp
image. Another major problem with point-and-shoot cameras is that
they do not have a view finder that is good enough to determine if the
subject is in sharp focus. Digital view finders are useless for
this as are the lcd screens on the back of the camera. Only an
optical view finder, looking through the lens, can give you the detail
needed to focus correctly (or check the focus if you are using auto-focus).
This type of view finder is found only on 'real' SLR cameras
(digital or otherwise). Unless you have an absolute need for
it you should not spend more than $500 on a point-and-shoot digital
camera. Beyond this value, save your pennies and get a digital
SLR. The price of digital SLRs has crashed in the past year and
will continue to drop. For $649.00
(from Digital
Camera Warehouse) you can buy a Pentax K100D digital SLR camera with a 18-50 mm lens or the PENTAX K10D WITH SIGMA 18-50MM
LENS for $1099.00, or the latest
K20D with 14.5 M pixels for $1359.00
with 18-50mm lens. All the new Pentax SLRs have anti-shake technology
plus sensor cleaning. See the full range at Digital Camera Warehouse. With the addition of
a small clip-on lens Raynox DCR-250 Super Macro Close Up Lens from
bugeyedigital.com you can
take superb macro shots. It comes with a clip-on
device so you do not have to screw it on. The lens costs
$US39.95, plus postage. If Bugeye
does not have the Raynox DCR-250 check on Ebay. A digital SLR camera
is light-years ahead of any point-and-shoot camera, no-matter what
the price. All digital SLR cameras have full auto settings so in
the beginning you can just point and shoot till you get the hang of it.
But, you cannot use point and shoot for macro work! In the last 20 years I have used Nikon equipment and could not afford
a digital SLR until the Nikon D100 camera was produced,
even then it was very expensive ($4000.00 - body only). I
had been using a Nikon 105 mm macro lens for about ten years
and to save spending more on lenses I stuck with Nikon. The
camera performed well and I used it for about three years. It
was when I started to use raw images (raw images are not processed
in the camera but are processed by software on your computer, all
professional photographers would use raw images) that I found the
camera was too slow at saving the images. I then looked
at what models were available and was going to get one of the Nikon
professional models when the D70s appeared. The price? only
$1400 (body only). It was very fast on starting up and saving
images, and had more-or-less the same features as the D100. I
purchased this one and have taken many thousands of images with it.
Update - June 2008. The new
Nikon D300 is really a very good camera and I would
recommend this to people (especially Nikon users) doing wildlife photography,
provided they can afford the lenses. Early in 2005 I was due to give a talk on buying a digital
camera and so wanted to test as many cameras as possible. I
already new about Nikon and managed to get hold of a Canon
EOS D10, D20 and a 350D. Only the Canon 350D is near the
price range of the Nikon D70s, the others are much more expensive.
By chance I managed to get hold of a Pentax *istDS and took some
test shots with it. I was amazed at the quality of the images,
especially the RAW ones. They were sharper than the Nikon or Canon
images, and the Pentax was (and is) much cheaper than the Big Two. The
K20D now has the highest resolution of any of the mid-priced
Digital SLR cameras and is packed with features. See the full range
of lenss for Pentax here. A couple of months before this I had looked for a top-of-the-line
point and shoot camera that I may be able to use to take
most of my photographs with as the Nikon equipment (camera,
lenses, flash) was rather bulky and difficult to carry on field
trips. I settled for a Panasonic Lumix DMC-LZ20 which cost
$800. All the reviews I had read raved about it and it had many
fine features. When I started to take some close-up photos with
it I found it was almost useless for macro shots. I already knew
the limitations of point-and-shoot cameras for macro work buy had been
duped by the hype. After testing the Pentax I thought "this is
the camera that I really need". Luckily a friend of mine wanted
a very light but high quality point-and-shoot camera and he took it
for $700 (so it cost me $100 for the experience). When I went
to purchase the Pentax *istDS I found that it had been replaced (in
Australia anyway) with the *istDL. The main differences are a larger
LCD screen and only three, rather than fifteen auto-focus points. This
was not a problem as I only use one focus point (spot focus) to be in
total control. In close up photography the last thing you want
is for the camera to be trying to set an average focus. I got
the camera just in time to leave for a conference in Perth (there was no
way I was going to lug the Nikon gear around on this trip). On the
trip I took about 1400 botanical images using the standard 18-55 mm lens
with the Raynox close up attachment for macro shots. Out of these
I got about 1200 very high quality images and can not recommend the Pentax
camera too highly. Because I did not have my laptop computer I was
not able to download images and clear the memory cards. For this
reason I used jpg images instead of raw. This was another surprise,
the jpg images produced by the Pentax are better than the Nikon D70s,
though I did use the Nikon software to edit them as it is certainly better
than the Pentax software. One point about Nikon however, you do
not get software to edit raw images (unless you buy the soon-to-be-released
D200) with the camera, this costs extra! More about this later. In recent times I purchased a Canon 30D with the latest 105 mm Macro
lens and I must say this would have to be the worst lens that I have ever
used. As soon as I got it I went out and took a few shots of a very
small flower at f40, using the inbuilt flash. I could not believe how
bad the images were so in case my lens was a dud I managed to borrow one
from a friend - only to find the results were the same. At f16 it is
OK but above f20 this lens is completely useless. I had a good look
around the web and found many complaints. The whole point of a macro
lens is to have crystal clear images at f stops above f20, where the depth
of field is at the maximum. In the meantime I had sold my Nikon 105
mm macro lens, thinking it was out-dated. This was a very bad move.
Sigma also make a macro lens for Canon, so I got hold of one of these
to test. At f25 the Sigma is about twice as good as the Canon lens
but even the Sigma was useless at f40. So what did I do? As I
could not get a macro lens that worked for the Canon I sold it and purchased
a Nikon D200. I then located a second hand 105 mm macro lens on Ebay
and will use that. I found I can take images with the basic 18-55 mm
lens of either Pentax, Canon or Nikon with the Raynox 250 close up attachement
and the results are so superior to those from these new lenses that you
would not believe it. What really made me decide to ditch the Canon equipment was when
I contacted a professional wildlife photographer who I new used Canon equipment.
I asked him if he had ever used one of thes new macro lenses and his
reply was "Yes, and it is the worst lens he had ever purchased". He
got an attachment to use an old Olympus lens in fully manual mode. I also checked up on the new Nikon macro lens which is similar to
the Canon one insomuch as there are no external moving parts and it seems
to be even worse. The resolution figures published in one review for
f40 were extremely poor. At least with Nikon all the old lenses still
work perfectly on the new digital cameras. When I get time I will post some of the images taken with the Canon
105 mm lens. View sample images here taken with the Pentax. From the above you will gather that I recommend
the Pentax digital SLR as the unit to buy. This is certainly
the case if you do not have a SLR camera at the moment, or you
do not have Nikon SLR lenses. Nikon and Pentax digital
SLRs are compatible with older lenses used with film cameras, they
go way back and you can use a lens 20 or 30 years old. The
Pentax will even support the old screw-in type if you purchase an
adapter (though you will find the quality of these old lenses very
low compared with modern ones). Canon only support more modern
lenses and as you cannot buy a decent macro lens to suit, I do not recommend
buying this brand. If you have existing SLR lenses for Nikon then
it is logical to stay with that brand and buy body only or as in the
case of the Pentax possibly the body with basic lens. For the best current prices on cameras (or any other item) go to
Shopbot
and search. A list of suppliers from the cheapest up will be listed.
Be sure to check out the full deal as some charge much more for shipment
and extended warranty than others. If you are a new buyer you would need
a very good reason not to buy Pentax. The
prices at the time of compiling this page from The Camera Farm and other
suppliers are: Go to Digital Camera Warehouse to check out the latest prices. CANON: EOS 30D BODY ONLY
$1745; EOS 30D WITH 18-55mm LENS
$1919; EOS 400D BODY ONLY $1129; PENTAX: PENTAX K100D WITH SIGMA 18-50MM LENS $897; WITH SIGMA 18-50MM & 55-200MM LENSES $1137; WITH SIGMA 18-125MM LENS $957; WITH SIGMA 18-200MM LENS $1247 (this is the ultimate combination)
PENTAX K10D - BODY ONLY (The new 10.2 Mp with Anti-shake
and dust remover). $1307. The new Pentax K100D has anti-shake technology built into it rather
than the very expensive way that Canon and Nikon use in building it
into the lenses. The K10D also had dust removal built in and a
huge range of new features not seen on other DSLR camera. With Pentax
any lens gets the benefit of the anti-shake technology. Warranty is often a worry with expensive cameras. In Australia
you can now purchase and extended warranty from Phototechnical
(up to four years extra) on digital still cameras and the cost
is very reasonable. You can purchase the warranty anytime
while the initial warranty is valid. Click here for details from the Camera
Farm. Update: December 2007. The 18-200mm lens with the DCR-5320 Pro attachment allows me to
take every type of image from ultra close to very wide without even changing
lenses so the whole package I have to carry is much reduced Update: June 2008 - I
am now using the Pentax K20D and can highly recommend it. USING YOUR DIGITAL CAMERA: The first setting to set is the image quality. This should
be set to the highest quality. On some cameras
it is called 'fine' on others a number of stars may indicate
the value, more stars higher quality. The setting should never be changed from the
highest quality (except to move it to raw). The value
should not be set to RAW until you have had a lot of experience with
the camera and with editing images. You then decide what size
images you want to take. Start with small, options are usually
small, medium and large. Keep in mind, this is not
the quality, this is the size of the output file. The smaller you
make the image file, the sharper it looks. To see how sharp an image
is look at it at 1:1 in your editor or viewer. Even the smallest
image that the Pentax can produce (1536x1024 pixels) is big enough to print
a 7x5 inch photo after allowing for a couple of hundred of pixels to
the cropped off during editing. Remember, you are using all the
information picked up by the sensor to create the image, not just one
third of the total pixel count. The information from three pixels
in a full size image is used to produce one pixel in the small image.
The effect is rather like stepping back from an oil painting, it
looks much better. If you want to print full A4 images you will need
the mid. setting of 2400x1600. I use this setting as I can then
crop more off the image and end up with the size image that I need. After spending a year experimenting with raw and jpg images I have
decided if, like me, you are taking a very large number of images
and they are not for printing in A3 size then using jpg images is the
best solution. The problem with RAW images is that you need very
good software to edit them and it takes more than twice as long to edit
raw images as no processing has been done with the camera. If you
use jpg imgaes (if you want large imges or need to crop a lot off them
you can still use the full size) you can set various settings within the
camera to get near perfect images each time. Experiment with the
saturation, brightness, sharpening and contrast settings till you get
it just right. Each model will be different. I find the *istDL
requires different settings from the K100D. If you use jpg images
you also get huge numbers of images on a card. I have found the very
best editing software for jpgs is the Nikon Capture program. Even
when buying a Nikon camera you do not get this program, you have to buy
it. See notes in 'Editing images' for details. There are two main uses for your digital
camera. After you have set the quality and size, set your camera to the P
setting (programmed auto mode) and take some shots. Some cameras have
numerous 'auto' settings for various types of photography. Try all
of these and see if there is really much difference. Rarely is there
much! The next step is to take a bit more control. Set the metering
method to 'Centre-weighted' and the auto focus to 'spot'
or 'centre'. This will mean that what is in the centre
of the picture is in focus and correctly exposed. Some of
the cheapest cameras will not have these settings. All SLR cameras
will have an exposure lock button. If you are taking a scene
with white clouds and the centre of your picture is in the white area
you must first point the camera lower down, depress the shutter half
way to get a reading, then hold down the exposure lock, lift the camera
up to recompose the shot and take the picture. If you do not do
this the bottom half of the picture will be almost black as it will be
exposed for the white clouds. Try the multi exposure setting for
this type of shot and see if it can cope, usually it cannot. Whatever
you do you will not be able to get the dark lower half and the white clouds
correctly exposed in the one image. Now take even more control. Set the camera to A (Aperture
priority). On the Pentax this is marked Av. With the camera
set to aperture priority it means that you can then set the apeture and
the shutter speed will be automatically adjusted to suit. This is
one way to improve the depth of field by setting a smaller aperture size
(larger number). Check the viewfinder to see what shutter speed you
have, if it is below 1/60 of a second you may get a blurry image from camera
shake unless you are using a tripod or have the Pentax K100D. Next try the S (Shutter priority), marked Tv (time value) on the
Pentax. You are now able to set a shutter speed to match
the type of image you are taking and the aperture will automatically
be adjusted to suit. If you go too high the camera will not
be able to compensate and the image will be dark. The final test is take full control and set the camera to M (Manual
control). With this setting you can set both the shutter
speed and aperture. This is the only
way to take closeup images. To get very sharp macro images
with plenty of depth of field you need the aperture to be set to
a very small size, f20 or more. This is where you run into problems
with point and shoot cameras, they are really movie cameras that take
snapshots. They do not have automatic aperture control like SLR
cameras, as you close down the aperture in manual mode the viewfinder
will go dark and at f8 you will be lucky if you can see to take the
picture. SLR cameras do not close down the aperture till you
take the photo so you get the full amount of light through the lens all
the time. Note: 50mm macro lenses are not suitable
for macro work with the flash as the subject is too close
to the lens, which blocks the output from the flash. This
is a small problem with the Pentax when using the 18 - 50mm lens
with the Raynox close-up lens attached, you have to move back a little
bit from the very closest point that you can focus on. As soon
as you move to a longer lens this is not a problem. The ultimate
macro setup is to use a Ring Flash but these are very expensive. They
do however take perfect macro shots with no shadow. There are
now cheaper macro flash units available from Hong Kong. Check out this
web site on Ebay Gadget Infinity. Believe it or not, I found the small inbuilt flash in these cameras
takes a picture almost as good as an expensive ring flash.
This is because the flash is low down. The standard
external mount flash units are much higher and unless you use
the diffuser, that they should all have, a dark shadow will appear
under the subject, due to the angle of the flash. For some unknown
reason no manufacturer now makes a flash that will sit low down, just
over the lens. Both Metz and Nikon used to make such a unit. Ring
flashes are too bulky, expensive and fragile to use in the field, and
if you are changing lenses, just too much trouble. I do
now use one on my Pentax camers that I purchased some years ago for the
Nikon D100, but mostly only in the garden. It is a Sunpak unit and
I was assured by the Maxwell people (Nikon Australia) that it would work
on the D100. When I switched it on the camera froze. This was
due to the TTL control being of the wrong type. I solved the problem
by identifying the TTL wire to the shoe and cutting it. The unit now
works well as a manual flash, which is no problem as it has a number of
power settings. I was very pleased when I found it worked well on
the Pentax D-SLRs. One problem that will eventually crop up when you have a Digital
SLR camera is some dust on the sensor. Nikon charges $80.00
(plus freight to get it there and back) to clean the sensor but
you can buy a cleaning swabs and fluid from Nulab Professional Imaging.
The swabs cost $88.00 for a box of 12 and the fluid is $25.00,
a total of $133.00 (with freight) for 12 cleans. This would
be the cost of one from Nikon if you take freight into account. You
must never use a lens brush to clean the sensor and never use the
'bulb' setting to hold the mirror up while cleaning. Most sensors
have an active filter covering them and the power must be removed from
this part of the circuitry for cleaning. These digital SLRs have
a special setting in the menu called 'Mirror up' for cleaning. Be
sure you have a well charged battery as if the mirror drops while you
are cleaning the sensor it may be damaged. It is obvious when
you have dust on the sensor as you will see spots on your images, always
in the same place. The more you swap lenses, especially in the
field, the more chance of getting dust in the system. The ultimate combination for SLR cameras is the Sigma 18 - 200 mm
lens with the Raynox 1.5x close up lens. You then never have
to change lenses so no dust can get in and you can photograph things
from pin-head sized flowers to elephants. Editing your images: All images taken with a digital camera need to be edited. You
will always get software with your camera that can do at
least basic editing. The most basic things you may need
to are; cropping, brightening, sharpening and resizing. Top-end
editing programs like Adobe Photoshop are very expensive and you
would need to be editing large numbers of images to warrant the
expense. The best value for money for a general graphics/image
editing program is Paint Shop Pro. This is now owned by Corel (of Corel
Draw fame) and is up to about version ten (Paint Shop Pro X). I still use Paint Shop Pro 7
and the sample images that can be viewed from links on this page were prepared,
including the text overlay, with this program. It produces
by far the best jpg images (quality for size), way ahead of Photo
Shop and applying text to images, like the ones in the Pentax sample
page, is a breeze. If you use jpg images in your camera I would recommend you buy the
Nikon Capture software. This does not come with a Nikon
camera (which is quite pathetic!), you have to purchase it separately.
It costs about $250.00 from Australian stores or $200.00
from Hong Kong (on ebay). It is an extremely good program
for editing jpg images and I use it for all my jpg images, including
those taken with the Pentax. It can also edit Nikon RAW images,
though not very well. If you are working in RAW mode there
is a brilliant FREE program called RawShooter Essentials.
There is also a 'pay for' version called RawShooter Premium which
sells for $US99.00. This is the one I use for all my
RAW images and it supports the *istDL images. UPDATE: (Bad Day At
Black Rock). Adobe has now purchased RawShooter and it will
vanish. A new Adobe program called LightRoom will be produced
at a much higher cost and it remains to be seen if it will be as good,
the beata version is as slow as a snail with a broken leg. The Nikon program 'Nikon View' is free and
is worth downloading. With it you can download your
jpg images from a memory card reader or camera, view them and
if you right click on an image (or images) and select 'edit' the
image will be passed on to Nikon Capture (or any other program that
you nominate, such as Paint Shop Pro) for editing. The
Nikon Capture software can also pass the imge on to Photo Shop for final
adjustments. There are free editors available, one well known one is The Gimp.
I have found it very complicated (even more so than Photo
Shop) and gave it the flick. There is an alternative, Zoner Photo Studio 8 Professional which
costs $US69.99. If you can get hold of the DVD from the September
2006 PC User you can get a free version of the Home version and a discounted
update to the Professional version. The home version is useless
for serious editing as it does not have Curves and Levels adjustment.
One surprising thing about this program is that it can read Canon,
Nikon and Pentax RAW images. Editing using Nikon View and Nikon Capture: Once you have installed the software (Nikon Capture first) you need
to set the preferences. Start Nikon View and click on ‘Edit’
then ‘Preferences’. The first tab will be for auto launch.
Click to select ‘Auto launch when connected to a camera or card’.
Click on ‘Thumbnails’ and make sure cache is on, move the cache slider
to 100 mb. Then click on ‘Still Image’. This is where you tell
Nikon View which program to use for editing. If Nikon Capture is installed
this will be selected, if not you can select another program such as Paint
Shop Pro. The other settings can be left at their default values.
For Nikon Capture the default settings are quite OK except if you do not
have Photo Shop you should set the options for ‘Open saved images with’
to Paint Shop Pro if you have it or otherwise the software that came with
your camera. You will mainly use this software for resizing the image.
Simply plug in your camera to the computer or memory card to your
card reader and Nikon View will fire up ‘Nikon Transfer’. The first
time you use it it will want to save the images in the ‘My Pictures’
folder under ‘My Documents’. Use this folder if you like or click
on the change button to set another folder. It will remember the
settings. Just click on the zig-zag arrow and the images will be
downloaded and Nikon View will open with thumbnails of all the images in
view. You can double click on an image to see it full size or right
click and select ‘edit’ to open the file in Nikon Capture for editing.
In Nikon Capture I arrange the image window to take up about ¾
of the screen with the tools stacked along the right hand side of
the screen in the last ¼. Before you do any editing you
need to sharpen the image with the Unsharp Tool. If it is a macro
shot (close up) set the intensity to 30. The Halo width should
be left on 5 and the threshold on 0. If you sharpen the image after
you have edited the colour and brightness it can introduce noise.
The ‘Curves’ tool is the most important one off all. The ‘auto’
button is the half black/half white circle second from the top. Click
on it. Sometimes the picture will then look perfect. If you have
white flowers in the image it does a very good job. If the flowers
are cream and the auto adjustment changed them to white, select the ‘blue’
channel from the ‘rgb’ tab and drag the vertical line to the right by clicking
and dragging on the triangle at the bottom of the line, till the colour is
correct. If the image is overexposed after using the auto button select
each colour (blue, green, red) and reduce each of them. In a perfectly
exposed image the colour markers in the rgb lines should be (from the left)
blue, green, red, about equal spaces from each other. If your image
has yellow flowers with foliage the result will be overdone with blue.
Select the green curve to see where it is and then select the blue one and
drag it back towards the green one till the blue haze has gone. You
may then need to nudge the green and red back a bit. After a bit of
practice you will be able to do this in a few seconds. Once you have adjusted the image to your liking you can now select
the area to be saved (crop it). Select the ‘Crop’ tool (the
dotted square) and click and drag to mark the area of the image that
you want to keep. The image will not be cropped till you save
it. If you have Photoshop you then click on the Photoshop icon on the
left and it will be transferred to that program. If you are using
another program click on ‘File’, ‘Save As’, type in a name for the file
and hit enter. The file will then be saved and opened in the program
you selected in the options. If you are in Paint Shop Pro select
‘Image’ then ‘Resize’. I would suggest 1200 pixels wide is a good
size. Make sure ‘Resize all layers’ and ‘Maintain Aspect Ratio’ is
selected and ‘Bicubic Resample” is the selected method. Do not
enter a height, this will automatically be selected to maintain the correct
aspect ratio. Click OK. Just click Save, and the image is
finished. If you are using the software that came with your camera
the selections should be almost the same. With Paint Shop Pro make
sure the jpg compression ratio is set to 10, this is 10:1. At this
setting there is no noticeable loss of quality. 20:1 or more will
degrade the image. I then save the image in Nikon Capture by clicking
'Save As' and just adding -e to the file name so it looks like this 'IMGP5624-e.jpg'.
I then have two versions of the file, one as taken and one that is edited.
This enables me to come back at a later time and re-do it from scratch
if necessary. As these are both jpg images the space taken on the
hard disk is not great. I use the 'Good' setting in the Nikon Capture
software for saving the jpg. I pass the image on to Photo Shop for
a few final adjustments and for saving as a tif file. If you do not
have Photoshop I suggest saving it as a tif file and using Paint Shop Pro
to convert all the tif files (when you are finished the batch) to jpgs
at once, using the 'Batch Convert' option. Another tool in Nikon Capture that often produces good results is
the ‘D-Lighting’ tool. Usually the best results are produced
with the ‘Better Quality’ button. If too much light has been added
pull back on the ‘Adjustment’ slider. Each time you download some images Nikon View creates a new folder
for them (named as a number). I usually add something to the
name like ‘Photos 21-2-06-40 Mile’. You can do this from Nikon
View by clicking twice (but not quickly which is a double click) and typing
in the new name after the number. By keeping the number as the beginning
of the name the folders will be in the order the images were taken. View some sample
images taken with the Nikon D70s View some sample images taken with the
Nikon D100 View some sample images
taken with the Pentax *istDL and the 18 - 200mm lens. View some sample images at PhotoBase
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If you have a specific question, email me at: garrysanko@rainforestmagic.com.au
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mailto:garrysanko@rainiforestmagic.com.au
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Note: We are not registered
for GST, this is just a hobby. |