Why does an unfocused lens still give a focused view with a longer exposure? For example, I took an out-of-focus photo with a ¹⁄₁₀th second exposure (at f/7.1), but when I change to 10 seconds (at ...
I understand that as I increase ISO, I'll increase the amount of noise in the resulting image. With a constant aperture I can decrease ISO and slow the shutter speed (assume a non-moving subject, ...
I am a little confused about the concept of shutter speed in video shooting mode. I assume that the "shutter speed" means how fast the shutter would open and close. When this happens, I would hear a ...
Most DSLRs have an exposure time limit of 30 seconds. Now I'm asking myself how is it possible to create images about over 1 hour or longer, like these two: ...
I used to be able to see both aperture f-number and shutter speed, and change both values on Av mode on my Canon 550 DSLR. Now, I can only see the aperture f-number and not the shutter speed on the ...
I have a Canon Digital EOS Rebel XT camera, and I wonder how you could take photos of moving water like rivers, waterfalls and fountains...