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Christopher Zimmerman
{K:0} 8/3/2004
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Decreasing the aperture size normally reduces chromatic aberrations (the blue fringing around white light sources). I think the Canon PowerShot G5 suffers from this problem more though. I just got this camera and it's my first semi-professional camera, so I'm still working out its quarks.
Strictly speaking a digital image's resolution is determined by its width and height in pixels. As for the DPI of an image, it is a function of your display length and width in inches and the display's total number of pixels. For example if one is running a 1 inch by 1 inch display @ 800x600 pixels our uploaded images would be displayed at 480,000 DPI.
In any case you are correct a lot of detail is lost when uploading images to this site. All of my images have a native resolution of 2592x1944 pixels and since my display is a 21" LCD @ 1600x1200 pixels my display image resolution is about 180 DPI. Also I can tell you that 16x20" prints on photo paper at this resolution outperform film.
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M.M. Meehan
{K:3751} 8/3/2004
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Oh yeah. I like this a lot better.
I was reading about the chromatic abberations. I never did find out what causes them for sure or how to avoid them. Everything digital will never be 'film'. When we load our film scans to the net they become digital too. Our PC's use only 72 ppi (pixels per inch) - Mac's use a few more. But everything beyond that is lost on the net. So a print you can see is the real thing. The net uploads don't have the detail.
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Christopher Zimmerman
{K:0} 8/3/2004
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Hmm the previous attachment was not uploaded.
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same shot without the fence |
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Christopher Zimmerman
{K:0} 8/3/2004
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Here's a similar shot without the fence. I'm a little disappointed in the chromatic aberrations seen in some of these night shots.
-zim
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M.M. Meehan
{K:3751} 8/3/2004
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What a very interesting night shot. I want to rip that fence right out of there. Its ruining my view of the city! I guess that was your intent, though. It sure does get me involved in your photo.
I might crop the tree right out of there and square up the shot. The fence would be even more obvious and annoying then. Plus it would add to the aesthetics of the shot to have the diagonal of the fence line end at the edge of the frame. And crop the top so that the fence line goes right to the corner.
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Derek Fitzer
{K:294} 8/2/2004
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Interesting image, I'm a big fan of night photography. have you visited http://www.thenocturnes.com/ it an amazing sf based night photography site.
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