Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
by Saaru Lindestokke                

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Exposure is the total amount of light allowed to fall on a sensor or film during the taking of a photograph. This is determined by the exposure time (shutter speed) and amount of light admitted (lens aperture). Today, sensor/film sensitivity (ISO speed) is often also considered to be part of ...

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2
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2answers
28 views

Is TTL flash really useful when using off-camera flash?

I have a Canon 700d and a 430EXIII flash. Recently I have been experimenting with off-camera flash. I was really surprised to see e-ttl ii available even when using off-camera flash (via the pop-up ...
2
votes
0answers
38 views

Inaccurate Exposure Indicator

I own two Nikon D7100's, and right now the exposure indicators are 'off' for both of them. They display a level of exposure, but it's not accurate. For instance, shooting in manual, with a 18-105mm DX ...
1
vote
4answers
111 views

Isn't the exposure meter scale shorter than the permissible range of EC?

I have a Nikon D5300. Yesterday, when I was fiddling with the camera, I noticed that the permissible range of exposure compensation is [-5.0,+5.0] while the exposure/light meter is calibrated from ...
0
votes
1answer
73 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 ...
4
votes
4answers
5k views

Why are my Nikon D5100 M Mode (Manual) settings reset for every shot whilst the camera pointing to the same object?

I've just noticed that whilst shooting with my D5100 using M mode settings reset after each shot. Say, the camera is on a tripod pointing to an object. I've balanced out the exposure to a 0, aperture ...
0
votes
3answers
69 views

How can I automatically get a (approximate) Lux value from overexposed and underexposed pictures?

As you will soon understand, I am not a photographer. For research in a completely different field, I am interested in estimating, even with a large approximation, the brightness of the environment in ...
1
vote
1answer
61 views

Do I have to be in focus to get the exposure right?

One technique I have learned recently to read the exposure correctly is that they first go very close to the subject's face to fill the frame mostly with her face, then they set the exposure. Then ...
0
votes
3answers
52 views

Is there a difference in image when using a two different combinations of exposure time and diaphragm? [duplicate]

My camera, aimed at a motionless object, is mounted on a tripod. Do I get a different image by changing exposure time and the diaphragm in such a way that the total amount of light coming in stays the ...
56
votes
5answers
25k views

Tips for landscape+stars photography?

I'm leaving for holidays tomorrow, and there's a good chance that I'll be able to be by night on a field with no artificial light around, and no moon in the sky. I'd love to take some picture of the ...
2
votes
1answer
94 views

How much exposure (in lux second) required for camera to yield middle gray image?

As I know, for any lighting condition, there is a recommended/indicated/correct exposure value for the camera to render the object as middle gray. The indicated exposure value can be calculated from ...
4
votes
2answers
120 views

Calculating exposure pre-light meter era

i watched a video on pray pixel about a street photographer with a Leica film camera. So I read a bit about the mechanical Leica, and it said there was no built in light meter. Hailing from the DSLR ...
3
votes
4answers
294 views

What's the cost of adjusting exposure of a RAW picture in post-process?

I wonder that if I increase the exposure of a RAW in some software, say, Lightroom, what do I lose in the image. I know that this is related to how is increase of exposure achieved, here in a few ...
0
votes
4answers
98 views

Can cameras set exposure in more precise increments than third stops in automatic exposure mode?

If I shoot in manual I set the exposure to the nearest 1/3 stop. If I use one of the automatic modes does the camera do the same thing or can it set the dependent variable to a resolution finer than ...
0
votes
2answers
59 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 ...
0
votes
1answer
61 views

How can I maximizing dynamic range without postprocessing?

How can I maximize the amount of detail captured in both dark and light objects in the same photo? I don't have the option of post-processing, so "traditional" HDR is not possible. If I reduce ...
2
votes
3answers
668 views

How do I know how much light will be needed for a given film speed, shutter speed, and aperture?

For a given film type, shutter speed and aperture, how do I calculate the light needed to get a good exposure? For example, if I use a f/8 aperture, an exposure time of 100 ms and a ISO 800-film ...
1
vote
2answers
324 views

Why isn't live view on my D3200 matching the exposure I've set manually?

I have a Nikon D3200 and it was working perfectly in manual mode. I used the live view mode and it previously showed the scene in the way that picture was supposed to be taken. I accidentally reset ...
1
vote
1answer
48 views

How do I develop a 400 ASA B&W film that was exposed at 200 ASA?

I've accidentally exposed two 400 ASA B&W films at 200 ASA. One I developed like a 400 and the negative has come out very under exposed. Any advice on how I can salvage the other one? Thanks
0
votes
2answers
75 views

Higher ISO or negative EV to capture action during wild life shooting at low light?

Early morning light..low contrast scene..hand held 7D-II with 300 IS II f4 lens. A big dark cat is climbing down a tree super fast. I had increased EV by 1/3 and had to jump up ISO to 5000 to get a ...
0
votes
1answer
114 views

Separating images from one multiple exposure image on Nikon camera

By mistake, I have images that have dual exposures superimposed in Nikon RAW format. These exposures were 2 seconds apart, so, it needs to be separated. Is there any way to separate these exposures ...
0
votes
3answers
5k views

Why is exposure meter reading not changing in Manual mode?

I own a Nikon D90. I am new to exposure setting. In Manual mode, I could see the exposure meter changing towards right of zero and towards left of zero informing about under exposure and over ...
7
votes
4answers
309 views

Why does holding the focus and recomposing also affect the brightness of my photo?

Let's say I try to take a picture of the following scene: a nice, blue river on the bottom and a solid, grey building in the middle. It is a sunny day and I am in a large distance, so both "objects" ...
1
vote
3answers
74 views

When to use exposure delay?

I recently found an option "Exposure delay" to minimize vibration. But is it necessary to use when you have VR on the lens? And does it do anything "extra/meaningful" by using both the VR and Exposure ...
4
votes
2answers
85 views

What factors affect the dynamic range of a sensor?

I understand what dynamic range is, but I'm interested in what it is that allows different sensors to have increased dynamic range over other sensors. For example, the classic explanation of a sensor ...
2
votes
2answers
85 views

What is the right way to blend multiple exposure real estate images?

I have stacked 3 exposures of the same shot in Photoshop to fuse it manually, so that I can make a better HDR image of the scene. But I am not quite sure whether I am following the right method for ...
3
votes
3answers
128 views

Why does it look like nothing is on my developed film?

i've recently bought Canon AL-1 with macro lens 35-70. I used some cheap kodak film, with ISO 400. Yesterday I went to some photography studio so they would scan my 35mm film. But when I got it back ...
5
votes
2answers
234 views

What's the difference between “exposure level indicator” and “exposure setting meter” in the Canon EOS 1DX Mark II viewfinder?

I have been looking at the manual for the latest Canon 1DX Mark II camera. I am confused about one aspect of the viewfinder. On right side of the viewfinder is the Exposure level ...
2
votes
1answer
78 views

Tips for proper exposure using center-weighted metering

I have a Nikon FM3a, which only has center-weighted metering. I know the zone system, and I know how to use a spot meter, but I am not sure how to use the center-weighted meter. It's easy to use a ...
0
votes
1answer
116 views

Does Av mode apply any in-camera software push-pull (Canon 6D)?

I test-shot frames in Manual VS Av mode with identical aperture/shutter speed/ISO, settings and lighting, and I noticed that some frames in Av are sometimes over or underexposed compared to those in ...
18
votes
7answers
843 views

Why do cameras use a single exposure rather than integrating across many very quick reads?

I have never understood why cameras need a shutter with a specific speed and why this cannot be adjusted in postprocessing. I think that present sensor works in an integral way: they save the amount ...
-1
votes
4answers
1k views

Why is my D3300 taking dull, over exposed pics?

Hi everyone, I am a doctor who has been recently introduced to the wonderful art of photography. My first camera was a Sony Nex 5r with 16-50 kit lens and I had a gala time with it. I ...
0
votes
4answers
171 views

Why doesn't the f-stop on my D7100 change when I hold +/- and change the dial in manual mode?

On my Nikon D7100, the f/stop will not go down from 14 when I hold down the +/- button and turn dial. All I get is a little number below but the photos do not change exposure when I change this ...
1
vote
1answer
85 views

If i use ISO 1600 to photograph stars will image stacking help reduce noise but also add more detail?

I would like to take better photos of the stars, especially the milky way, but my highest ISO setting is 1600. I have now learnt that image stacking can help reduce noise when taken with the same ...
8
votes
1answer
154 views

NIkon D5300 Flash problem plus getting different images with the same settings

I have two problems with my Nikon D5300 recently that are driving me crazy. The first problem is when I take pictures, focusing on the same object, I keep getting different images: one is too bright, ...
2
votes
2answers
2k views

Will a faster lens, like f/1.4, help get better Milky Way images?

I have a Nikon D7000 and don't know whether my 50mm 1.4 or 17-55m 2.8 lens would be better. I was automatically going to go with the 50mm lens, but then I was reading up on how I can use a longer ...
1
vote
1answer
95 views

When stacking images to remove noise in astrophotography, should the exposure be the same in each?

I am trying to get to grips with astrophotography and have read about image stacking to help reduce noise. I am a little confused about whether the images to be stacked are all taken at the same ...
0
votes
0answers
21 views

Efficiency of DSLR's CMOS at constant ISO [duplicate]

Does the efficiency of CMOS change if one keeps the ISO constant but changes the exposure time?
3
votes
3answers
302 views

Inconsistent exposure with same settings--why?

I have a Nikon D7100. I fired off a burst of shots at 6 fps at a static outdoor scene, all shots using the same settings: 1/125 s, f/7.1, ISO 100. Some of the shots are clearly darker, some are ...
1
vote
6answers
770 views

How do you take a picture without focusing?

So I've just started getting into photography. I'm currently experimenting with taking long exposure photos at night, but my house doesn't have the ideal surroundings for a good pic. Is there any way ...
0
votes
0answers
90 views

Normalize the brightness of images with different exposure times using EXIF data

I shot a bunch of images in a hurry today, having forgotten to switch the camera to M mode. So my photos ended up having different exposure times, and now I must normalize them to make them look as if ...
1
vote
3answers
96 views

Is it possible to improve the quality of images I grab at 90fps?

I am using "Raspicam" (https://www.raspberrypi.org/documentation/hardware/camera.md) for a robotics project, where I need to get as many images as possible in 1 seconds. Camera works perfectly fine ...
-2
votes
3answers
89 views

Nikon D3S - Controlling CMOS image acquisition time [closed]

Is there a way to achieve the following sequence? open the shutter, wait until it is fully settled in open position, clear the CMOS sensor (remove accumulated charge), start collecting photons, ...
7
votes
2answers
372 views

What are the advantages of additional exposures between outer brackets of an HDR stack?

Firstly, I understand the idea behind HDR photography so I'm not looking for an explanation of HDR. What I'm interested in is the large number of exposures often used to capture a scene with high ...
1
vote
1answer
78 views

Can't duplicate Auto results in M, Tv, and Av Canon 70D

I've been a an amateur photographer for several years. I understand the technical side and enjoy explaining it to others. But...with my 70d, which I've owned for over a year, when I take an indoor ...
0
votes
2answers
78 views

When to use the LV formula?

EV = log2(f^2/T) LV = EV + log2(ISO/100) Question is to those that this is already clear. It is not a math question, it is a photography question about using Light Value. My puzzlement is ...
2
votes
1answer
77 views

How do I get actual (vs. reported) Bulb mode exposure times on my Canon 1200D?

When shooting in Bulb mode using my Canon 1200D, I've noticed that the metadata appears to only contain 1" increments for the exposure time. For example, regardless of whether I hold the exposure ...
4
votes
3answers
550 views

How does software exposure compensation work in RAW files?

When shooting with RAW files, it is possible to tune the exposure and white balance using software, which is not possible when shooting with JPEG. But I have a stupid question: when you are shooting ...
1
vote
2answers
186 views

What could cause very underexposed photos in daylight?

I just recently started toying with the manual mode on my Canon 70D. Everything was working fine for a few shots, then all of a sudden my newer shots all appear darker under the same settings. The ...
4
votes
4answers
464 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, ...
12
votes
6answers
2k views

Could a “universal exposure” setting be practically possible?

Not sure how uneducated this question is, but I'm interested in learning, so thanks in advance for your indulgence. Film physically changes over the period of time it's exposed. A digital sensor, ...