Westminster fountain at sunset

by Jorge Córdoba

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641 reputation
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bio website
location Boston, MA
age
visits member for 2 years, 9 months
seen Aug 16 at 7:30

Apr
16
awarded  Good Answer
Jan
8
awarded  Yearling
May
29
comment Will there be a need for cameras at all once we have 4k video?
Ya, that's totally easy to do with video. A 4-minute long exposure? At 30 fps, that gives you 4*60*30 = 9600 frames to average. Quite easy to do using software. As a bonus, you can blend them nonlinearly if that gives a better effect, which is completely impossible with a traditional long exposure. As another bonus, you end up with an extremely high color depth, which smooths out sensor noise amazingly well. The only thing you sacrifice with video when doing a long exposure is the xy image resolution.
May
29
comment Will there be a need for cameras at all once we have 4k video?
I want a video camera that's optimized for still photography — one which produces crisp, uncompromising output that is intended to be post-processed by a computer. Once we have another 1000-fold (or so) increase in storage, it makes sense to shoot almost everything as video and then later go back and "snap" the real photo from the video, using the left/right arrow keys to move backward/forward in time and the up/down arrow keys to increase/decrease the shutter speed. Add in Lytro and you've got aperture adjustments as well. Almost no need for traditional cameras with this approach.
May
29
comment Will there be a need for cameras at all once we have 4k video?
You can totally do low-light and long-exposure with video. All you need to do is post-process the video. It's actually very easy.
May
29
comment Will there be a need for cameras at all once we have 4k video?
Sure you can do a long exposure with video: just average n frames to produce an n/30-second exposure. It's not a perfect solution because there are always little gaps, but it's darn close. If actually done this, so I can say for a fact that it works. As a bonus, you get much higher pixel depth because the noise smooths out. A few weeks ago, I took a 30-second video with an iPhone in near darkness. After averaging 900 frames and converting to 32-bit depth, a simple curves/levels adjustment brought incredible detail out of the photo.
Apr
11
comment What characteristics make a digital sensor good?
MOAR MEGAPIXELS! ;)
Apr
11
answered How can I take portraits which seem to capture the essence of a subject I've just met?
Jan
8
awarded  Yearling
May
18
answered What is causing the cyan outline in the building in the background of this image?
Mar
16
revised Why are there no dark yellows, or bright violets?
Added another picture.
Mar
13
awarded  Mortarboard
Mar
13
awarded  Nice Answer
Mar
10
awarded  Necromancer
Mar
9
awarded  Editor
Mar
9
revised Why are there no dark yellows, or bright violets?
added 806 characters in body
Mar
9
awarded  Teacher
Mar
9
answered Why are there no dark yellows, or bright violets?
Jan
8
comment What is the “exposure triangle”?
This is beyond awesome. You should be writing books about photography.
Jan
8
awarded  Supporter