Linked Questions

8
votes
2answers
2k views

What are the practical differences between the exposure settings my camera picked for me in auto mode and my own choices?

I were using Fujifilm x-t20 and I took two photos: one with 'Auto' switch on and the other with 'Auto' switch off. I compare the two and I cannot find noticeable difference. and the settings Here ...
0
votes
2answers
255 views

What is the formula to calculate aperture (“diaphragme” in French)?

Let's say I have these data for my camera: t : Exposure time in seconds ("temps de pose" in French) C : Incident-light meter calibration constant ("constante lumière incidente" in French) S : ISO ...
1
vote
4answers
90 views

how many f stops should I allow for a given change in focal length - ISO and shutter speed remaining constant?

There are charts that show me what how many stops in shutter speed or ISO to allow when, for example, using an ND filter but given that a longer focal length reduces light available is there a chart ...
5
votes
3answers
399 views

Why are certain apertures so popular?

Popular f stops in lenses are typically f/1.2, f/1.4, and f/1.8 for portrait lenses. The reasoning behind that is pretty self explanatory. Moving up past 1.8, I see some f/2.2 lenses occasionally, ...
1
vote
1answer
885 views

Relationship between shutter speed and amount of light?

With all else remaining the same (ISO, aperture etc.) is there a way to compensate for changes in the lighting of the scene by changing the shutter speed of the camera such that the intensity of the ...
2
votes
3answers
163 views

I know what “stops” in an aperture are, but what are differences in stops in various light sources or areas of an image?

I understand what F-stop and T-stop mean, but I've also heard the term "stop" used like this: the background is one and a half to two stops darker than the key light What does "stop" mean in this ...
7
votes
1answer
5k views

What are STF lenses?

What are STF (smooth transition focus) lenses? How much do they differ from other fast lenses? What artistic techniques are done with them? For example Sony has an a-mount 135mm F2.8 [T4.5] STF. What ...
0
votes
2answers
162 views

How much light do I need for my RX10-II at 1000 fps?

I know the video mode is taking a frame "approximately" 1/1000s long, the aperture opens up to f/2.8, and the Auto ISO will select within the camera's range, 64-12800, so how much light (in the studio)...
9
votes
4answers
6k views

What is the relationship between ISO, aperture, and shutter speed?

I know digital cameras have ISO options, and that ISO is the camera's sensitivity to light, but if you set higher ISO then you can get a noisy image. I also know there are two other camera options, ...
1
vote
2answers
856 views

Does exposure compensation affect shutter speed in aperture value mode?

When I am shooting in AV/aperture value mode, and I switch to +1 EC, will it affect my shutter speed?
0
votes
1answer
2k views

Will the Sony FDR-AX100 really be better in low light than the Sony FDR-AX33, even though the latter has a faster lens?

I see that Sony FDR-AX100's lens has opens at f/2.8 while Sony FDR-AX33's lens opens at f/1.8 I am often doing photos (Canon 6D) or videos in places where a f/1.8 lens would be a great advantage over ...
1
vote
1answer
102 views

How to shoot the sequence of adjusted exposures wanted for a ColorChecker?

I'm trying to shoot a sequence of photos needed for calibration. As instructed, I'm in manual mode, with fixed ISO 100 (camera dafault), and other values read from the lightmeter ... and now: Can you ...
5
votes
4answers
735 views

Do flash guide numbers assume some amount of ambient light built-in?

My flash shows its potential range in meters, but is that indoors or outdoors? The question came up the other day when I was trying to work out whether fitting a diffusion dome would be suitable for ...
4
votes
2answers
3k views

How do I calculate the number of stops between two shutter speeds?

What is the math equation to calculate the difference between two different shutter speeds in stops?
0
votes
2answers
1k views

Canon rebel t3i manual mode [duplicate]

How do I make the photo brighter in manual mode? When I prepare to take a photo in manual mode it is very hard to see the subject after I take the photo it is all black. Indoor and outdoor

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