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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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3answers
2k views

Is over-exposure preferable than under-exposure?

I am learning the world of Photography and always attempt to get the best possible shot but there are times when getting the exposure just right can be tricky depending on the situation. (I can tell ...
5
votes
4answers
1k views

What's the difference between holding a half-pressed shutter button and pressing the AE lock?

As I have been looking around today the AE lock button is supposed to lock in the focus and exposure settings (aperture and shutter) so that the picture can be recomposed before taken. I also believe ...
11
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1answer
933 views

What is “exposure safety shift”?

I ran into the term "exposure safety shift" in this answer. What is exposure safety shift, and what is its intended purpose?
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3answers
457 views

What techniques are there to get focus and/or lock exposure other than center, half-press, and recompose?

The way I shoot is this: turn the camera so that the subject is in the middle of the viewfinder, where my center point is, press the shutter half way, the camera now focuses the lens on the subject ...
3
votes
1answer
382 views

How do you photograph sand dunes?

In 2010 I was lucky enough to visit Death Valley. While we were there we went to the sand dunes. I took this shot Its not how I remembered the scene, It seems as if a lot of the detail has been ...
3
votes
2answers
463 views

Why does the exposure vary in these Nikon flash photos?

The following 4 photos were all taken with a Nikon D300 at 1/250s, f/5.3, ISO-400, in shutter priority mode, with the on-camera pop-up flash. The only difference between them is the exposure bias, ...
17
votes
2answers
6k views

What is T-number / T-stop?

Usually, when discussing aperture of a lens, F-stop and F-number are used for quantifying. But some photographers, and especially videographers, also mention T-stop. The concept and numbering used ...
-2
votes
1answer
996 views

How does aperture affect exposure? [duplicate]

I've heard that aperture can change the exposure, but I would like to know if this is true, and how it does it. P.S. I hope this question isn't dumb like my last two.
5
votes
4answers
5k views

How can I set an exposure time over 30 seconds with a DSLR?

Most DSLRs have an exposure time limit of 30 seconds. Now I'm asking myself how is it possible to create images about over 1 hour or longer, like these two: ...
18
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3answers
1k views

Why does a 15-second exposure on my camera actually last 16 seconds?

I was doing a test and wanted the shutter to stay open for 15 seconds -- no problem, I have a 15-second exposure setting in my camera. It seemed to stay open for about an extra second, though, so I ...
6
votes
2answers
305 views

Can telephoto lenses cause the background to be darker than the foreground in the same light?

I took this photograph yesterday afternoon at around 5:15pm EDT, about two hours before sunset: The sky, in my perception, was bright, and my little subject is standing in the same lighting as the ...
31
votes
7answers
10k views

What are the advantages and disadvantages of using auto ISO on a DSLR?

What are the advantages and disadvantages of using auto ISO on a DSLR? Using manual ISO obviously gives you more control, but auto ISO may mean that you get "the shot" under quickly changing ...
1
vote
2answers
218 views

What settings do I need for shooting a candid against the sky?

I have Canon 1000D. Most of the times I use canon 50MM F1.8. I use evaluative metering and single point (center) auto focus. What setting do I need to change to have metering of sky (say red of ...
3
votes
4answers
394 views

How to best view test shots on camera LCD in bright, outdoor photo shoot

A couple weeks ago I did a basic outdoor photo shoot for a family. It was mid day, and the sun was out. I took test shots initially and when viewing the shots on my DSLR's LCD screen they appeared to ...
4
votes
4answers
576 views

Why are these light trails large blobs of light instead of nice thin lines?

I'm trying to shoot a traffic light trails with my point & shoot camera (Panasonic Lumix DMC-LZ8). But the oncoming vehicle headlights are appearing as large blobs of light and not exactly thin ...
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vote
1answer
177 views

Is this picture too dark? [closed]

http://500px.com/photo/5546307 Probably some personal taste applies here too, but Would be better to have things more bright in order to have some area which are at the bright end of the range? ...
3
votes
3answers
674 views

Double exposures straight to a memory card?

I'm looking to work out why some photos I have taken with my phone have strange images of a girl in them, when she clearly shouldnt be there. Can a photo taken with a normal camera phone double expose ...
3
votes
1answer
635 views

Ways in order to achieve dramatic lighting styles?

My question is more specific to the situation I am going to be shooting [with the subject being a person laying down in a hospital bed] The photo will be taken from the ceiling above the bed and ...
1
vote
2answers
2k views

Why is Auto Exposure on my Nikon D300s Overexposing?

My 300s appears to be overexposing - especially in the image playback - is there a way to calibrate or check the exposure measurement? Have been compensating exposure with some success.
10
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3answers
2k views

What is EV, when used as an absoute measurement?

I know there is already a question about EV, but it doens't quite answer my question. I understand EV as a relative measurement, 1 EV being one stop (doubling or halving the amount of light), but what ...
3
votes
1answer
1k views

Equalize exposure levels of a set of images in a stitched panorama

I've taken a set of pictures for a panorama. Unfortunately, I've forgotten to set the flash to manual exposure, hence I ended up with uneven exposure levels in the images. When I stitch them ...
2
votes
1answer
553 views

What is the reason for underexposure in my film photographs?

Thanks to all the quality answers I got here that helped me to buy a film camera. I got my first roll of film processed and printed. The print results are not as pleasing as looking at the slides ...
5
votes
4answers
9k views

How can I improve my exposure in low-light situations?

I am new to photography and have been struggling with low light scenarios. I have a Nikon D3100 and an SB-900 flash. Regardless of my ISO, aperture, or shutter speed settings, when I am ...
5
votes
2answers
2k views

What is the EV scale?

I have seen an "EV" (exposure value) scale that's sometimes used to express a camera's exposure settings, or scene brightness. How exactly does this scale work?
3
votes
4answers
596 views

How critical is it to expose raw images correctly?

I have been thinking about the Zone System and its goal of maximising image quality given the limitations of film sensitivity and the necessity to choose specific developing parameters. Clearly you ...
13
votes
7answers
553 views

Why can't digital camera sensors expose each photosite individually?

Why is it impossible for camera sensors to function the way the human eye can? What I mean is, why does a certain portion of the image have to be over/underexposed if we compensate for dark and light ...
7
votes
2answers
252 views

How can I salvage an HDR image from non-optimal source images?

During a recent wedding, I took a number of shots with my Nikon D90 at different exposures, hoping to merge them into HDR pictures. However, it was done in a hurry, i.e. with no auto-bracketing or ...
7
votes
4answers
646 views

Is there a good use for program exposure modes?

The question about how programed exposure modes work made me wonder. Are there situations where a program mode is good for some reason, not just as a convenience or because you don't understand ...
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3answers
438 views

How does this TLR camera expose properly?

I found a DIY TLR camera kit that lets you build the camera from parts, then use it to take photos. What I don't understand, is that the specs list: 1/150s shutter speed; f/11 aperture From that ...
8
votes
4answers
8k views

How does TTL flash work in manual exposure mode?

I got the Metz 44 AF-1 flash recently that is TTL capable for my Canon 550D, and have been reading around to get a better understanding of using flash on-camera (Neil Van Niekerk's article on flash ...
0
votes
2answers
3k 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 ...
16
votes
6answers
12k views

How do I make picture from my Canon Rebel more dramatic and colourful, via camera settings if possible?

I have just started clicking with my new Canon DSLR camera and while I'm getting used to its functions and settings, I was intending to get the colours more vibrant while clicking my pictures. Any ...
13
votes
5answers
685 views

Why are only certain shutter speeds or apertures available?

For the exposure control function DSLRs there are specific shutter speeds available. For example there are 1/4, 1/100, 1/500. Why, even in high end DSLRs, is there no option to use a custom shutter ...
6
votes
3answers
255 views

Should I set exposure on my camera or later with software?

With most cameras (Point-n-Shoots and DSLRs) I have always seen exposure settings for exposure. My question is this, should I mess with exposure in the camera while taking the shot or use software ...
5
votes
1answer
442 views

Bracketing with ISO or exposure time?

With old cameras, you had film with fixed ISO and you could bracket your shots by either adjusting the f-stop or exposure time. Normally, if I have enough light, I prefer to keep the f-stop constant ...
2
votes
1answer
445 views

How does Sunset Mode affect exposure on Canon A800?

I was puzzled recently when I did some test shots with my Canon A800 by shooting the same (landscape) scene with and without full optical zoom and with the camera program set to SCN - Sunset. (Sunset ...
4
votes
3answers
631 views

Why are there multiple contradictory ways to control flash ratio?

I am reading the following introduction to flash photography: http://www.cambridgeincolour.com/tutorials/camera-flash-2.htm In this article, I came across two seemingly contradictory statements: ...
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votes
2answers
2k views

How can I think logically about getting correct exposure with flash?

I recently got a new off-camera flash (Nikon SB-700), and I'm having trouble thinking about the variables that go into proper exposure. For example, without flash, I have a little mental decision ...
4
votes
4answers
356 views

Are there any situations in which it makes sense to raise the ISO in bright daylight?

Are there any situations in which it makes sense to raise the ISO in bright day light? For example, this pic has been taken in bright day light with ISO 3200, f18, 1/1250: ...
6
votes
4answers
753 views

How to correct photos which were overexposed at the edges only?

I'm dealing with a set of photos where a model was photographed against a white backdrop. The problem is that due to the setup, way too much light reflected off the backdrop. So the model's face (for ...
4
votes
5answers
5k views

How do I check the exposure meter reading on a DSLR?

I'm a beginner, and I have a Nikon D5100. Many times I come across the suggestion to "Check the meter reading for exposure." Where can I find this reading and how do I read it?
8
votes
3answers
1k views

Why meter off sky, then change aperture and shutter speed?

In section "Night and Low-Light Phtography" that starts on page 128 of Bryan Peterson's "Understanding Exposure" book, he has several examples where he (spot) meters off the sky with a large aperture, ...
4
votes
4answers
2k views

Why does my Canon 60D sometimes lengthen exposure when using the flash?

In low light conditions, my first shot will often be handheld with no flash. If there's not enough light however, the shutter speed can be too slow and I'm not steady enough for a crisp image - so ...
0
votes
4answers
3k views

Why am I getting overexposed shots in P mode with a D7000?

When using my D7000 I often have the feeling that it overexposes by 1/3 or even more, on the P programme - it also depends on the lens. Is it just me? Or am I doing something wrong? EDIT: Exposure ...
20
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6answers
6k views

What is one “stop”?

I always hear this term, e.g., I had to go down one stop Increasing X by Y raises Z by one stop I turned down the flash/the light two stops This lens/sensor/strobe/Photoshop tweak raises X by ...
10
votes
2answers
279 views

What is “photometric exposure”?

What is "photometric exposure," and how is it related to what is commonly called "exposure" and "exposure values"? I have also seen the term "radiometric exposure" used to describe a similar ...
4
votes
4answers
1k views

What's the best way to take cityscape photos on a night boat cruise?

I'm going on a boat cruise tonight in London. What's the best way to take photos of the riverbanks from the boat at night? My kit includes: Nikon D7000 Nikkor 35mm f/1.8 Nikkor 16-85mm f/3.5-5.6 ...
3
votes
2answers
736 views

What advice would you give for taking photos on a boat cruise at night?

Tomorrow I will be going on a boat cruise in the evening in London. I will no doubt be looking for photo opportunities on the boat, both of people, as well as the landmarks/surroundings. I'm pretty ...
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vote
0answers
150 views

How to achieve even brightness in landscape photography? [duplicate]

Possible Duplicates: How can I get the right exposure when parts of the scene are in the shade and others are in the sun? How to cope with high contrast? Today I went for a walk with my ...
5
votes
4answers
1k views

How does one deal with too much light when taking a photo?

How does one cancel out extra light while clicking a photo? Is decreasing the aperture a better option, or using a faster shutter speed? What are other options we could try?