Moonlight

by Jakub

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1,593 reputation
819
bio website
location ND
age 31
visits member for 2 years, 11 months
seen May 18 at 19:43

Jan
5
comment Why don't sensors have a wider aspect ratio?
1. Most photos are viewed on a screen, but not fullscreen. They're embedded in articles. 2. We have a wide field of vision, but the area we perceive as sharp and we can focus on is not wide. 3. Most photos don't aim to accurately reproduce human perception; instead they show one subject we focus on. Wide is not usually optimal for this. Nor is it usually the most pleasing one. Paintings are almost never as wide as 16:9 as this is not a good aspect ratio for showing most subjects. 4. Cinema is different: it does aim to fill out your field of view without putting subjects in the edges.
Jan
3
awarded  Nice Answer
Jan
2
comment Why does “bulb” mode usually rely on holding the shutter button?
I have seen the cable release from your second picture, but not the first. Now "bulb" makes sense.
Jan
2
accepted Why does “bulb” mode usually rely on holding the shutter button?
Jan
2
comment Why does “bulb” mode usually rely on holding the shutter button?
If you keep holding the button, it's not going to be just a couple of jiggles at the start and the beginning. There's a risk of many jiggles during the exposure due to the need to keep holding the button.
Jan
2
asked Why does “bulb” mode usually rely on holding the shutter button?
Jan
1
comment Does this test chart show that my kit lens front focused?
For more reliable results, focus on markings on a sheet that is strictly perpendicular to the optical axis, and place a separate rules at a tilted angle next to it. Tilting the whole chart is unreliable.
Jan
1
revised How can I avoid green flare on my sunrise photos?
added 19 characters in body
Dec
31
comment How to calculate the correct focal length needed for a subject of a given size and distance?
Suppose you want to frame an object of size a at distance l. Then, roughly, a/l = s/f where s is the sensor size and f is the focal length.
Dec
31
answered How do you even see the focus area rectangle when in dark?
Dec
31
revised How can I avoid green flare on my sunrise photos?
added 166 characters in body
Dec
31
answered How can I avoid green flare on my sunrise photos?
Dec
25
accepted How can I take wide angle macro photos with a Nikon APS-C camera?
Dec
24
comment How can I take wide angle macro photos with a Nikon APS-C camera?
Thanks for your response. It wasn't clear to me how to determine when an extension tube is too thick to prevent any sort of focusing. With a wide angle lens, the focal length is always shorter than the flange distance, and they have to use something like a retrofocal design. So a thin lens model won't help in figuring out what would happen. I should have though of the obvious solution: just hold the lens in front of the camera without mounting it to test whether an extension tube of a certain thickness would work.
Dec
22
revised How can I take wide angle macro photos with a Nikon APS-C camera?
edited title
Dec
22
comment How can I take wide angle macro photos with a Nikon APS-C camera?
Anyone voting to close, please read the question carefully first. I thought it was clear that I'm asking for facts on what works, not opinions on what's best. If the question is not clear, please comment.
Dec
20
revised How can I take wide angle macro photos with a Nikon APS-C camera?
added 25 characters in body
Dec
20
comment How can I take wide angle macro photos with a Nikon APS-C camera?
This is not a recommendation question. I'm not asking what's the best. I'm asking what works at all (based on first hand experience).
Dec
20
asked How can I take wide angle macro photos with a Nikon APS-C camera?
Dec
17
comment Why does L*=0 not correspond to black in the L*a*b* color space?
Maybe easier to see: Manipulate[ ArrayPlot@ Table[LABColor[l, a, b], {a, -1, 1, .05}, {b, -1, 1, .05}], {{l, 0}, -1, 2} ]