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Photo question! (resolution)

L

LuckyLuke

Registered Users (C)
I need some help! I'm not into computers really.

If my photo meets 600x600 pixels requirement, does it mean the resolution is ok? Cause in this case I have to zoom in the photo to 20% to make it look normal, otherwise, in it's 100%, the photo comes into squares and the dots become visible.

What shall I do??
 
600*600 pixels is the resolution, so that's fine, but if the picture looks very pixelated unless you zoom out to 20% then that's definitely not OK.

Was the picture taken at a low resolution (less than 600*600) and then resized? Or was it taken with a very old/low-end camera (or cell phone cam)? Often the pictures look best when taking them at the highest possible resolution possible and then resizing/cropping down to the required resolution using software such as Photoshop or one of the many available online photo editors.
 
TheAtheist said:
600*600 pixels is the resolution, so that's fine, but if the picture looks very pixelated unless you zoom out to 20% then that's definitely not OK.

Was the picture taken at a low resolution (less than 600*600) and then resized? Or was it taken with a very old/low-end camera (or cell phone cam)? Often the pictures look best when taking them at the highest possible resolution possible and then resizing/cropping down to the required resolution using software such as Photoshop or one of the many available online photo editors.
Click to expand...

Thank you for the reply! I took pictures at 7M 3072×2304 recorded pixels and set the quality to 'best'. Now I tried to resize the photo on camera itself, it looks a little better then, but still those red-green dots are visible. I don't know what to do.. I use Pentax Optio E30 camera, maybe it's not that good?
 
LuckyLuke said:
Thank you for the reply! I took pictures at 7M 3072×2304 recorded pixels and set the quality to 'best'. Now I tried to resize the photo on camera itself, it looks a little better then, but still those red-green dots are visible. I don't know what to do.. I use Pentax Optio E30 camera, maybe it's not that good?
Click to expand...

The camera should be fine, however from your description it appears that these red/green dots are due to "hot pixels" which are not that uncommon, especially when shooting with high ISOs and long exposure times.

Does the problem still occur if you take the picture in a bright environment with a low ISO (e.g. 100)?
 
TheAtheist said:
The camera should be fine, however from your description it appears that these red/green dots are due to "hot pixels" which are not that uncommon, especially when shooting with high ISOs and long exposure times.

Does the problem still occur if you take the picture in a bright environment with a low ISO (e.g. 100)?
Click to expand...

In this case the dots are almost gone, but then the whole picture looks blury. So I either get a blury picture or a sharp one with lots of noisy dots :(
 
TheAtheist said:
600*600 pixels is the resolution, so that's fine, but if the picture looks very pixelated unless you zoom out to 20% then that's definitely not OK.

Was the picture taken at a low resolution (less than 600*600) and then resized? Or was it taken with a very old/low-end camera (or cell phone cam)? Often the pictures look best when taking them at the highest possible resolution possible and then resizing/cropping down to the required resolution using software such as Photoshop or one of the many available online photo editors.
Click to expand...

GUYS, the 600x600 pixels measurement is the SIZE of the picture
the resolution is given by the density of the pixels on a square inch (as if you were printing it). In a previous post I gave the "IDEAL" picture details but I am gonna repeat them here ANYWAY (the composition details of the picture light, head, background, no jewalry, showing boh ears, I presume fullfield already. REMEMBER THE true colour request or the 24bit colour, same thing).

put the resolution of the picture to 300dpi
thus the picture becomes when printed a 2 x 2 inches (that should ring a bell from the previous DV years as the american embassy when it came to printing pictures lately requiered 2x2 inches ones).

IF you did not set the resolution of your pic to 300 dpi YOU ARE NOT AT FAULT as .. the resolution is intended only for PRINTING IT and I am thinking that they have a software that given the SIZE of 600x600 they choose how big the printed picture would be (for 300 dpi resolution the pic is again 2x2 inches)

relationships: size (pixels), resolution, printed size
given a constant SIZE 600x600 pixels by changing the resolution let's say below (lower) 300 dpi ... your printed size will increase (even if your monitor does not show any difference); for a bigger (better) resolution, the printed size will decrease under the 2x2 inches :)

conclusion
set your RESOLUTION to 300 dpi ...and you will get the picture that they WANT (ID DID NOT SAY REQUIRE .. I AM JUST GIVEN YOU A HINT) :) the 2x2 inches :)
 
Thank you, prepelix, for your answer.

Anyway, it seems that last year, they required 300x300 pixels, this year - 600x600.
My photo looks really good if I make it in 300x300, can I make it somehow good in 600x600 too? Why was 300x300 pixels requirement changed if they can resize it themselves?
 
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