Questions tagged [exposure]

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 exposure.

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Were these Robert Frank photographs made by underexposing in camera versus in development?

These are example images which I think is purposely underexposed: Robert Frank, The Americans Plate 43. Robert Frank, Mary and Pablo in Bed, c.1954 My question is that are those images underexposed ...
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Calculating EV of an image file using its exif data

I'm trying to calculate the EV (exposure value) for an image file based on its exif data. In Wikidepia, I came across this formula for calculating EV: EV = EV100 + LOG(S/100, 2) = LOG(N^2 / t, 2) +...
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Canon 70D often overexposing or underexposing shots

It really started to bother me, I don't know what it is, is it difficult lighting conditions for the camera is it my settings, but I very often get incorrectly exposed pictures with my 70D. Here are ...
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What to do when you've set the wrong ISO for your film?

I’ve put my Fujifilm Superia X-TRA 400 into my Minolta Hi-Matic 7 and I forgot to change the ISO setting for the new film. It’s set for the last roll at 200. So what setting should I put for a normal ...
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How to choose the correct exposure for flower photography?

I have an old Minolta X-700 with an MC-Rokkor lens (its internal light metering was broken) and I'd like to use it to take photos of flowers. I use Sunny 16 rule, and though it seems that for the ...
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Should I use +1 EV compensation when shooting with Ektar 100 on a cloudy day?

I'm using Ektar 100 for the first time and the weather report is not looking good. I think my day trip will be cloudy and will try to use an old Pentax Zoom 280p with Ektar. I will take city/ street ...
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Overcast / city exposure

I find that the sky brothers exposure method is lacking 2 big levels... I'm back from 2 weeks in Europe and i metered mostly off the sky and most of my shots are underexposed... Where should we meter ...
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Manual and Shutter Priority Mode Problem [duplicate]

I am using Nikon D5300 with AF-P NIKKOR 18-55mm kit lens. When i try to take shot from manual and shutter priority model, the camera produce half shutte release sound and the image gets all while and ...
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Why is a lens darker than other ones when applying the same settings?

I own a Nikon D500 DSLR, with a Nikkor 16-80 mm 1:2,8-4E ED VR lens. I noticed that this lens, when applying exactly the same settings (same ISO, same aperture, for instance F8.0, same Shutter speed, ...
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How to take pictures of a moving speaker in a dark room with accent lights?

I’m taking pictures this Sunday at my church of the youth pastor preaching and in the youth room is a semi-lit type of room with a lot of accent colour lights. He’s going to be moving and I want to ...
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How to set exposure for photographing the milky way?

I want to photograph the milky way but have had troubles with ambient light. The first attempt suffered from streetlights. The second attempt away from streetlights suffered from full moon which I ...
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Is this posterization? How to avoid it when stretching histogram?

Last weekend I took some photos in the mountains, where I can't control the light, nor the movement of the subjects. Some of the photos had very little contrast and brightness, and were a bit ...
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Which ISO should I use for the cleanest image? [duplicate]

Assume the case of a Canon 6D Mark II. Its lowest ISO is regulary 100. If expanded, I can set it to L, which is ISO 50. Until now, I was always under the impression the lower the ISO the cleaner the ...
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How does a DSLR measure brightness and sharpness of an image?

In mirrorless cameras, light reaches the image sensor all the time, so this data can be used by the camera to determine the correct focus, shutter time, aperture and ISO. Makes sense so far. However ...
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Why isn't glass transparency part of the exposure calculation? [duplicate]

The F number is a ratio calculated purely from the focal length of the lens and the size of the aperture. Any light meter talks in terms of F, Shutter, and ISO. Different glass, or just different ...
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Do f-stop and exposure time perfectly cancel?

I am photographing a scene with white and black elements in it. Starting at the f/22 stop, I widen the aperture one stop and decrease the exposure time by a factor of 2, take a picture, and keep doing ...
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Why does color hue change on different exposures?

When shooting with long exposures (multiple to tens of seconds) I noticed that in some cases colors in the resulting photos change hue. This was on Canon EOS 1100D, but I've also seen such a problem ...
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Do I need 1/128 flash power at guide number 43-44 or is 1/32 enough?

I am planning to take photographs that have a shallow depth of field (50mm f/1.8 on a crop sensor body) and that are also lighted by an external off-camera flash. I am comparing two external flashes. ...
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Why did this image turn out darker?

In this tutorial on creating christmas themed images the author describes how she adjusted her exposure settings to add more weight to the christmas lights She says she went from f/2.8 and 1/3 of a ...
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How can I manually set EV in Lightroom to take a neutral density filter into account when merging photos?

I shoot a couple of Images and try to merge them with Lightroom. Since a few (but not all) of the shoots were taken with an ND-Filter. I need to somehow tweak the EV value of the Photos I took with ...
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Does the T-number account for lens vignetting, or only for glass/coating transmission?

Surprsingly I could not find information on this. Many lenses have vignetting profiles available. Vignetting changes if you use a cropped sensor, or, in case of zoom lenses, can change with zoom. ...
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HDRI with ND Filter

When I take images for composing a HDR image later how can I use an ND-Filter. For example I capture 5 images whitout an Filter and then add for the 6 and 7 shot a 10 Stop ND-Filter how can I tell the ...
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Why is same image exposed at 100 ISO noisier than 3200 ISO? [duplicate]

I used to believe that ISO adds noise as a drawback to increasing exposure, but after researching the topic I arrived at the conclusion that it is a misconception. By amplifying the existing signal ...
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Shooting on Manual and still getting variation in exposure

Basically i shoot clothing on a hanger on a white background. I have everything set up custom that never changes, a light and a camera that also never move. Yet when i change the clothing item i'm ...
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How do constant aperture zooms produce identical exposure, even though focal length is larger? [duplicate]

My understanding is that a larger focal length corresponds to a larger working aperture diameter, since the numerator is larger. Why doesn't a larger working diameter correspond to a brighter image? ...
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Mathematical definition of EV on a RAW photo? [duplicate]

I'm trying to write a program that takes in a matrix full of 12-bit RAW sensor values (that range from [512-4096]) (512 is the BAYER sensor black level--> i.e. what pure black is defined as) and ...
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How do I figure out what ISO to use when shooting film?

I'm new into film and I recently bought a pack of 200 film. I'm just not sure what ISO to use. I don't want my photos to come out over or under exposed. (I have a Minolta X-700)
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What is the relationship between film speed and the ISO setting on my film camera?

What is the relationship between the speed number of the film you put into your film camera and the ISO adjustable setting on the camera itself? Do you put them on the same number or do you adjust ...
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How to calculate difference in exposure between two given frames?

This question regards exposure. I have a project I am working on where I need to be able to calculate the exact number of stops between two given exposures, with the end goal being to match the ...
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1answer
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Overexposed and not clear photos Olympus stylus 1

I am having some issues when taking photos with my Olympus Stylus 1. When setting things in auto photos are overexposed and a bit blurry. I have taken the same photo with a GoPro5 all in auto and the ...
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4answers
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What is the relationship between lens diameter and exposure?

All of the online calculators for exposure, I have seen, factor in time, film speed, and aperture (which is a function of the iris diameter and the focal length of the lens). However I would have ...
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If I use my digital camera (w/min. ISO of 200) as a light meter, how do I set exposure for ISO 100 film?

I have a Fuji X-T100 and its lowest ISO setting is 200. Now, I’d like to shoot some slides like Provia 100 or Ektachrome 100 as well as Portra 160, using my Fuji as a light meter (it works pretty well ...
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How can I get a high shutter speed and correct exposure when taking photos of horses in an indoor arena?

So I do a lot of inside photos. The problem that I'm having is a need a fast shutter speed without a flash. Like horses inside an arena. I can't have a flash but I need to take still photos. But the ...
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how can I have equivalent exposure and identical white balance while changing f stops using speedlight?

how can I have equivalent exposure and identical white balance while changing f stops using speedlight? im shooting from shoes when it comes to the moment of changing f stops from 5 to 16 in order to ...
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1answer
223 views

Why does push processing seem to be so popular?

It seems that many people are very eager to push their film. If you check sites such as Flickr or other communities discussing film photography, it can feel like almost as many people are shooting at ...
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Should I continue to learn exposure on a film camera or switch to digital?

I have a Canon AE-1 but I’m new to photography. I mean it’s always interesting me but I never did anything until now when I found this camera in my grandma's attic. It works pretty well. I mean I ...
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When would lack of auto-exposure bracketing (AEB) be a deal-breaker for an entry-level DSLR? [closed]

I am a beginner to DSLR, and I am currently shooting with Nikon Coolpix. As an upgrade I am looking to buy D3400. I checked its specs and seems like AEB is missing. Is it really needed for a beginner ...
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How to take a dark photo of a dark room?

I was trying take a photo of a room at dusk. No artificial lights and the room was quite dark - it was difficult to read but not pitch dark. I adjusted the parameters so that the exposure meter in the ...
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2answers
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How can I bump up shadows in post without overexposing the image?

I'm trying to create a Photoshop/Lightroom RAW processing preset to process 1200 images for photogrammetry. It's important that the lighting on them is as flat as possible and the shadows get bumped ...
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3answers
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What are physical causes of clipping?

What exactly limits modern digital camera sensors in capturing light intensity beyond certain point?
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Canon DSLR photos underexposed [duplicate]

I have a canon DSLR and even in Manual mode or with proper settings, I have to bump aperture, shutter speeed AND ISO to get photos to be even CLOSE to the right exposure. Currently have my ISO set to ...
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10answers
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Either background is overexposed or the foreground is underexposed. Are there possible solutions/approaches?

I use an Olympus EM-10 with a Panasonic Lumix MFT lens. No other accessories apart from the build in flash. I trained a situation in a restaurant to take a picture of the table inside with an outdoor ...
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3answers
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Are burned out highlights bad?

I have read many answers and articles saying that I should avoid blown out highlights, but is it really a bad thing? Why should I avoid it?
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How to use Pentax A3000 in dim lighting?

My Pentax A3000 doesn't have shutter speed control, only ISO and a few modes, B (bulb), 60 for flash, program, and aperture. I keep it on program, but what should I do if I want to shoot in darker ...
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Why do my photographs taken with a film camera look so saturated?

I’m starting to shoot photographs using my Dad's old camera, an Olympus OM-4. I’ve noticed that in comparison with my friend's photographs mine are a lot more saturated. Why can it be? Here's an ...
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1answer
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What is causing dark pictures in Auto Exposure mode?

I have been using my Nikon D40x in Automatic mode, and it went from taking beautiful pictures to suddenly taking very dark pictures. I have done a "reset", thinking that I must have hit a button that ...
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2answers
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How to get bright concert photos?

I've been starting to shoot some live music recently and have been doing an okay job and see an improvement with each time I shoot. However recently I was shooting and all of my photos have come out ...
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8answers
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Does using long exposure together with ND filter make the scene look more evenly lit? [duplicate]

Suppose I try to shoot a piece of forest with trees casting dense shadows during daylight. It looks something like this to a human eye (part of larger and more detailed image from here) In the image ...
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1answer
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Night portrait with noiseless in focus background [duplicate]

We know to take a noiseless night landscape/cityscape, we need use a tripod and set a low ISO. For example in a scene I use ISO 100, aperture f/8.0 and exposure time 30 seconds, I get a night ...
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2answers
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Requirements for long-exposure night time webcam

I am working on a computer vision project that requires repeated measurements of the amount of light a specific building emits at night. I want to set up a webcam and a Rasperry Pi, and set it to take ...