Orquid "Phoenix"

Orquid "Phoenix"

by ceinmart

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bio website mattgrum.com
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visits member for 3 years, 7 months
seen 8 hours ago

Feb
2
revised How can knowledge of human perception of color be used in photography?
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Feb
2
revised What does “expanded ISO” mean?
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Feb
2
revised What does “expanded ISO” mean?
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Feb
2
answered What does “expanded ISO” mean?
Feb
2
comment Is there any noise difference between averaged and long exposure photos?
@jrista Digital sensors heat up over time, and this can dramatically increase noise, so a 30s ISO100 image might have more noise than a series of 2s ISO1600 taken over a couple of minutes with short gaps between each one to let the sensor cool down.
Feb
2
answered Is there any noise difference between averaged and long exposure photos?
Feb
1
revised How can knowledge of human perception of color be used in photography?
added 320 characters in body
Feb
1
revised How can knowledge of human perception of color be used in photography?
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Feb
1
revised How can knowledge of human perception of color be used in photography?
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Feb
1
revised How can knowledge of human perception of color be used in photography?
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Feb
1
revised How can knowledge of human perception of color be used in photography?
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Feb
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answered How can knowledge of human perception of color be used in photography?
Jan
30
comment How does background blur (bokeh) relate to sensor size?
Whenever you talk about factors affecting depth of field it's essential to state what you're keeping the same in the comparison and what you are allowing to differ. For me it makes sense to keep the angle of view and subject distance the same (so that you getting as close to the same photo in each case). If you were comparing a DSLR and compact, you wouldn't use a 10mm lens on the DSLR just because the compact has a 10mm lens. You'd use one that gives the same angle of view. So when you change focal length to maintain angle of view, DOF changes with sensor size.
Jan
29
comment What tips do you have for taking pictures against “green screen” background?
Make sure your subject isn't wearing green... seriously though make sure your subject is far enough from the BG so that green light isn't reflected onto your subject...
Jan
28
awarded  Necromancer
Jan
28
awarded  Enlightened
Jan
28
awarded  Nice Answer
Jan
28
answered How can I stop my HDR shots looking so fake?
Jan
27
awarded  Nice Answer
Jan
27
comment Do DSLRs play games with ISO when used with fast lenses?
...cont Resolution affects perception of noise, and normalization of variables not under investigation is absolutely standard as part of any scientific process. I'm at a loss as to why resampling images would invalidate the results, as this is exactly what a printer would do when given two images of different resolutions. Finally there is no one page which explains everything but all the information is there if you look for it.