Desktop Picture Quality

Hello all,
I am unsure where to post this because it deals with both the desktop and iphoto...I guess?
I placed a picture from iphoto as my desktop background, but the quality is really cruddy...see squares and whatnot. I understand that I can re-size it, but I would like it full screen; is there anything I can do to make this better?
Thank you in advance.
S

I can't remember exactly how things were displayed in 10.4 and I rarely use iPhoto (although I'm on 8.x), because I usually use Graphic Converter and/or Apple Aperture, both of which will display all sorts of information. Aperture even shows my camera model, shutter speed it was shot at, etc, etc. But my guess is that (a) you don't have the software capable of showing the info or your camera doesn't display such info, and (b) it was shot at a low resolution. The only other thing I can think of is to go into the settings of your camera and see what settings the previous pictures were shot at - most cameras allow you to specify the size and/or resolution.
In any case, as for your problem, I don't think you can tweak the photo enough to make it a better quality. I've tried many different ways with the two applications I mentioned and reducing the size works just fine; reducing the resolution will result in a lower quality. Again, check your camera settings and see if you can set it to shoot at the highest quality/resolution, but not necessarily the largest size.

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