I took photo of a coin on a white paper. The paper looks gray on PC, how 2 shoot pure white/edit in Photoshop?
I have been told that it's the White Balance settings. So I custom-set the white paper as White for my camera (Canon 350D). But the improvement is small.
I tried increasing the exposure, but in order to turn the paper to look pure white (RGB: All 255), my coin will look bleached and "washed out". So this did not work either.
Perhaps I am not doing the above correctly?
I do not mind image-editing in Photoshop, if I can be taught the mouse-clicks.
Many thanks in advance!! Paul
the reason that your paper did not turn pure white is
1.it is not pure white and 2.lighting conditions
the only inexpensive way to get a coin ad a pure white background is as you have guessed to edit the image in photoshop - you have to cut the coin from the picture and place it on a pure white background
there are many ways to do it - if you don't have any photoshop skills probably the easiest method would be to erase the white paper using the eraser tool
extract filter is pretty good and gives great results when the form is not that regular
for a perfect circle (coin) you may try a circular selection of the coin then right click on the image and "select inverse" and the del
it will select the "paper" and delete it leaving your coin on a transparent background - then you can create a new layer, place it underneath and fill it with pure white
the expensive way is to have a professional studio with the right lightning and setting
hope this helped
PS. Congrats for the 350d - very good camera (i am raising money for a 30d 
)
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