User Alan Marcus

68 votes

Accepted

Why is a dark-room safelight safe?

answered Jun 2, 2016 at 22:32

58 votes

Accepted

What is the point of the depressible peg on a quick release plate?

tripod

answered Oct 2, 2017 at 15:25

46 votes

Why do we use RGB instead of wavelengths to represent colours?

raw color rgb

answered Jun 4, 2017 at 13:20

36 votes

Why is the cost of film going up so fast?

film black-and-white

answered Jan 13, 2019 at 15:39

34 votes

What technique is used on old technical brochure pictures, which look like a "polished" or "smoothed" rendering?

technique style

answered Jun 10, 2018 at 15:06

33 votes

Accepted

Why are War Photographers able to take pictures that seemingly violate the exposure rule?

exposure depth-of-field motion-blur

answered Feb 27 at 2:05

32 votes

Accepted

Why doesn't the picture become darker the more you zoom in?

exposure focal-length zoom camera-basics

answered Jul 25, 2018 at 22:37

32 votes

How do I safety check that there is no light in Darkroom / Darkbag?

film developing darkroom

answered Aug 1, 2019 at 22:38

31 votes

Should I horizontally flip a client's portrait?

photoshop photo-editing portrait business group-photos

answered Oct 19, 2017 at 13:52

31 votes

Accepted

Can I mimic animal "tapetum lucidum" in a film camera?

film lighting-modifiers sensitivity

answered Oct 23, 2017 at 15:23

30 votes

How did my negatives end up upside down and backwards?

35mm negative-film

answered Aug 17, 2017 at 2:33

28 votes

How can I make a grave-side photo which will not fade?

print-preservation

answered Sep 15, 2017 at 2:35

26 votes

Accepted

Why is CMYK more efficient/beneficial than RGB for performing printing operation on white paper?

printing color-spaces rgb cmyk

answered Feb 13 at 16:24

24 votes

What are these clusters of branching structures on/in my lens?

lens

answered Jun 17, 2018 at 18:37

24 votes

Accepted

Has anybody ever taken an analog photo of a negative to turn it into a positive?

scanning negative-film

answered Jun 16, 2017 at 13:56

22 votes

What is this dial on my old film camera for?

film equipment-identification

answered Oct 1, 2019 at 23:01

21 votes

50mm mirror lens. Does one exist?

focal-length lens-design mirror-lens

answered Dec 16, 2017 at 23:28

21 votes

Do convex lenses make parallel light rays of different wavelength converge to different points?

focus focal-length optics chromatic-aberration

answered Dec 20, 2017 at 0:10

21 votes

What should I look for in a respirator for chemical processing of photographic materials

developing darkroom safety

answered Apr 22, 2021 at 21:09

20 votes

How to Destroy Slides

slides privacy

answered Jan 18, 2016 at 4:29

17 votes

Why is infrared light's focus point different from that of visible light?

focus optics light infrared

answered Oct 26, 2015 at 19:42

16 votes

Accepted

What causes these lines / scratches to appear on my developed film?

film developing scratches

answered Jun 30, 2016 at 0:14

16 votes

Accepted

Why does wider aperture make snowflakes look bigger?

exposure aperture focus

answered Feb 28, 2018 at 7:31

16 votes

Why must unexposed and undeveloped film be handled in total darkness?

film developing

answered Sep 17, 2017 at 14:59

15 votes

Accepted

What do these curved, color-coded lines mean on a vintage Nikkor lens?

lens depth-of-field old-lenses vintage

answered Aug 1, 2018 at 4:39

15 votes

Can 35 mm film which went through a washing machine still be developed?

film developing

answered Sep 27, 2019 at 13:47

14 votes

How do manufacturers get to high (83x) zoom levels on hybrid cameras?

zoom optics lens-design

answered Jul 12, 2018 at 15:48

14 votes

Are lens hoods a must?

lens lens-hood

answered Oct 5, 2017 at 14:16

14 votes

Why can I see through this astronaut on the Apollo 11 footage?

film

answered Jul 21, 2021 at 15:39

13 votes

Accepted

What motivated lens makers to now use 1/3 f-stops rather than say 1/4 or 1/2 stops?

aperture lens-design f-stop

answered Oct 25, 2016 at 21:56

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1,231 Answers

Why is a dark-room safelight safe?

What is the point of the depressible peg on a quick release plate?

Why do we use RGB instead of wavelengths to represent colours?

Why is the cost of film going up so fast?

What technique is used on old technical brochure pictures, which look like a "polished" or "smoothed" rendering?

Why are War Photographers able to take pictures that seemingly violate the exposure rule?

Why doesn't the picture become darker the more you zoom in?

How do I safety check that there is no light in Darkroom / Darkbag?

Should I horizontally flip a client's portrait?

Can I mimic animal "tapetum lucidum" in a film camera?

How did my negatives end up upside down and backwards?

How can I make a grave-side photo which will not fade?

Why is CMYK more efficient/beneficial than RGB for performing printing operation on white paper?

What are these clusters of branching structures on/in my lens?

Has anybody ever taken an analog photo of a negative to turn it into a positive?

What is this dial on my old film camera for?

50mm mirror lens. Does one exist?

Do convex lenses make parallel light rays of different wavelength converge to different points?

What should I look for in a respirator for chemical processing of photographic materials

How to Destroy Slides

Why is infrared light's focus point different from that of visible light?

What causes these lines / scratches to appear on my developed film?

Why does wider aperture make snowflakes look bigger?

Why must unexposed and undeveloped film be handled in total darkness?

What do these curved, color-coded lines mean on a vintage Nikkor lens?

Can 35 mm film which went through a washing machine still be developed?

How do manufacturers get to high (83x) zoom levels on hybrid cameras?

Are lens hoods a must?

Why can I see through this astronaut on the Apollo 11 footage?

What motivated lens makers to now use 1/3 f-stops rather than say 1/4 or 1/2 stops?