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.

Filter by
Sorted by
Tagged with
3
votes
3answers
2k views

Nikon d5100 producing extremely underexposed images

I have a most vexing problem. I have a Nikon d5100 (roughly a year old) which up until two days ago handled exposure and metering just fine. However, at night, in a well lit room (florescent bulbs) ...
1
vote
2answers
70 views

Why is S-Log2 exposed for correctly at 32% for middle gray

I though that when metering, cameras set the exposure so the average brightness in the scene is 18% gray or RGB(127,127,127). Then I read this article and am confused on this chart http://www.xdcam-...
1
vote
6answers
1k views

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 ...
1
vote
1answer
70 views

How to set optimal exposure times before creating HDR image?

I am going to take five photos and combine those into an HDR-image. How do I calculate/chose the optimal exposure times to create the best HDR-image? And how to chose number of images to use? I have ...
0
votes
2answers
4k views

How can I cause red eye in photos I take with my iPhone 6s?

How do I cause red-eye in my photos? I had no trouble causing red-eye in my old iPhone 4; but having issues with the 6s, even with [right & left] circular polarising filters over the flash and ...
5
votes
6answers
283 views

Would there be a noticeable difference between long exposure and brighter light?

If I take one photo with long exposure and dimmer lights (e.g. constant lighting) and then another photo with short exposure but lights brighter to the level enough to compensate for the shorter ...
2
votes
1answer
195 views

Why did my 35mm scans come out with this white grain?

So I recently found my Grandfather's old Pentax ME, I just finished my first roll and noticed that the scans came out very white/grainy. I am wondering if this could be an exposure issue, it was new ...
1
vote
3answers
188 views

Dark images problem (low exposure) with canon 650d

I have a canon 650d, recently the camera is taking dark photos (low exposure) I always use good settings/standard, but somehow it started giving dark images in the picture below I was under a strong ...
3
votes
1answer
118 views

Calibrate exposure in RawTherapee using a grey scale

I just got a grey card which comes with a 11 levels grey scale : L 18.9 | Ev −2 | Ev −1.5 | Ev −1 | Ev −0.5 | L 50 Ev 0 | Ev +0.5 | Ev +1 | Ev +1.5 | Ev +2 | L 98.2 How do I take advantage of this ...
3
votes
2answers
64 views

Increase shadows and contrast but keep developing time standard with TMAX 400 Film

I would like to increase contrast make it stronger / darker with TAX 400 Film but keep developing time standard. Do I have to push this film or underexpose it? If underexpose then by how much? I would ...
2
votes
2answers
215 views

How do I prevent washed out photos with an Olympus Mju II on sunny days?

Whenever I use my Olympus Mju II with ISO 200 film on a warm very sunny day, the photos come out washed out. I need help with what proper film to use.
1
vote
2answers
356 views

Why are Canon 700D photos under exposed when compared with the preview?

I'm using a Canon EOS 700D with a 50mm 1.8 prime lens. I normally preview the photo through the LCD screen before I click the photo. I recently noticed that my photos are under exposed when compared ...
0
votes
2answers
573 views

Which settings are needed in this situation in order to have equivalent exposure?

Two Wedding Videographers will cover a wedding ceremony. Both use a Canon Eos 80D DSLR camera with different lenses. The first videographer used a Canon EF 50mm F / 1.8 lens with aperture settings (...
1
vote
1answer
68 views

Holga 120 WPC exposure times

I'm struggling to reconcile the recommended exposure times of a Holga 120 Wide Pinhole Camera as suggested by Holga, vs the values I am getting via an app like Pinhole Assist (or even when computing ...
8
votes
3answers
8k 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 ...
4
votes
3answers
156 views

What mathematical operation does the raw exposure slider in photoshop do? And how does it differ from adjust exposure when the file has been opened?

If I open a raw file in Photoshop without modifying the raw exposure and compare it to the same file with a raw exposure modification of -0.2; when I inspect the linear values it seems like a ...
5
votes
2answers
281 views

Accidentally rewound the film the wrong way

I am a total film shooting newbie and while winding my film back up in the canister I did not notice that i was accidentally turning in the opposite direction of the arrow. I then opened my camera and ...
9
votes
2answers
440 views

How can I get a fixed short exposure ( < 2s) with a GoPro Hero 4 Black?

Does anybody knows about way to fix or manually set the exposure of a GoPro Hero 4 Black (FW HD4.02.02.00.00). I want to set short exposure (< 2 sec), so that each shot has the same parameter. ...
1
vote
2answers
262 views

Can I make in-camera photos dark but less grainy?

I often find that, when I try to get a photo that looks as dark as I want it, I have to lower exposure, e.g. by using Exposure Bias function of the camera. But then, when I actually see the resulting ...
1
vote
2answers
62 views

luminance range for camera

According to this article, luminance is proportional to pixel measurements via the following: Where: N_d is pixel value f_s is fstop t is exposure time S is ISO K_c is a camera constant If we shoot ...
11
votes
5answers
3k views

What's the difference between “Fake HDR” and real, bracketed exposure HDR?

As I began to brush up on my landscape photography skills I came across the polarizing (pun intended) issue of HDR photography. More specifically, I came across a well written blog post titled "...
4
votes
7answers
1k views

Why automatic mode is worse than manual? [duplicate]

I have bought a micro 4/3 camera recently and only getting into the basics of photography. What I heard on photo forums is that a rule of thumb is to try not to use an automatic shooting mode and ...
4
votes
1answer
367 views

Dark Image at longer focal (aviation photography)

I am trying to practice aviation photography, I have a Nikon D3100 and AF-S VR Zoom-Nikkor 70-300mm f/4.5-5.6G IF-ED. When I take a shot at a longer focal length the subject (aircraft) is dark and I ...
1
vote
1answer
222 views

Inconsistent exposures using my Neewer Vision 5 strobe with Nikon d7100

I was doing a photoshoot of children and was getting great shots using my nikon d7100 with a Neewer vision 5 ttl strobe flash. Then all the sudden I could not get proper exposure! Every once in a ...
5
votes
2answers
168 views

Newbie need help with sunrise photos

I just got an Autel Evo 2 drone to get angles I cant obtain by foot since I'm disabled. It's supposed to be a very good camera. It has a few settings, but I'm new to camera settings anyway. My last ...
9
votes
2answers
319 views

Why is the earth not overexposed in this star photo from the ISS?

The NASA Image of the day on August 6, 2020, is this picture titled "A Starry Sky Above the Earth's Atmospheric Glow": (Source and full resolution Image) When looking at this photo, I ...
1
vote
1answer
56 views

white line on my photo different exposure

i got this bright and dark line difference since last 5 months and it happens often but not always is there something broken in my image processor or what  im using fujifilm xt100 and fx 35mm changing ...
1
vote
0answers
64 views

Analogue camera: exposure counter is broken?

I bought an analogue camera (Pentax MZ-50) and every time I turn on/ off the camera the exposure counter goes one up, meaning the frames are being unused as I am not taking any photos. How is it ...
1
vote
3answers
115 views

Metering when using an external/basic flash

I have a Canon camera (90D) with an inbuilt flash; when I half press the shutter it fires the flash a bit to do metering I presume. Is there a way to get the same sort of behavior to aid with metering ...
18
votes
8answers
6k views

Why are blown highlights particularly bad in digital photography?

I've heard that digital sensors are less "forgiving" of blown highlights than film. Why is this? There's something called "characteristic curves". How does this relate, in film and in digital? Can ...
8
votes
2answers
2k views

What is the “Sunny 16” rule of thumb?

I've heard of the "Sunny 16" rule. What is it? How, and in what situations, can I use it?
3
votes
2answers
146 views

Nikon D5600. Trying to learn Manual and keep track of what exposure settings I used

How can I keep track of the exposure settings I used when I transfer photos to my laptop? Is there a way to "tag" the settings info to each photograph? Thanks.
3
votes
2answers
214 views

Poorly scanned or poorly shot film roll?

Edit: Here are samples of the negatives.. 29, 32, and 33 were the photos I showed I'm hoping I could have some input on what exactly went wrong with this Portra 400 35mm roll of film. I've been ...
1
vote
1answer
54 views

Do i need a Grad filter along with ND for long exposures that involve the sky?

I was at a beach taking a photo of the sunset and trying to get a long exposure but the sky was too bright. If I put on a ND Filter, that would darken both the sky and foreground meaning I'd have to ...
1
vote
3answers
202 views

Underexposure problem

I have a low level consumer dslr (Nikon D3400) and recently was trying to capture a bird flying in my backyard. It was around noon, bright sunny day. I was using a telephoto lens at 200mm to try to ...
1
vote
0answers
145 views

White photos on Canon S5 IS

I have an old CANON S5 IS camera, which I was using for half a year until it started to take completely white photos. Exposure and white balance are set to normal. ISO is also set to auto. In low-...
2
votes
1answer
80 views

Exposed unshot film roll

I’m really new to shooting film and made a really dumb mistake. I tried to load my film into my camera but must have done it wrong because the counter stopped at 12 even though the roll had 36 ...
11
votes
6answers
5k views

Why are my sky photographs coming out dark?

When I take pictures of objects in the sky (aircraft, birds, etc.), I frequently find that the entire sky looks underexposed. I typically take such pictures in Program mode ("P"), because ...
5
votes
5answers
2k views

Do any cameras have advanced auto-exposure algorithms?

Reading answers to Why are my sky photographs coming out dark?, I began to wonder: are all current autoexposure algorithms really so basic as to just measure the average brightness of the scene? It ...
1
vote
2answers
80 views

Fear of underexposure despite proper exposure in editing program?

I'm constantly afraid that my images are underexposed for I'm playing a lot with light and shadow and like to shoot at night. Even though in my picture editing program the image seems well exposed ...
10
votes
1answer
11k views

How to calculate Lux from EV?

Instead of looking up a chart, how can I calculate Lux from EV?
1
vote
2answers
369 views

Under-exposed photos, Manual mode

I am currently taking a Photzy.com photo class and have not used my camera in Manuel mode in YEARS... Actually, the last time I used manual mode I was in high school, 20+ years ago. So to say I am a ...
4
votes
1answer
343 views

Why is part of my image underexposed when using flash?

I've been trying to teach myself the basics of flash photography. I'm having an issue which I don't know is user error or a fault with my equipment. I'm using a Canon EOS 1100D with a Neewer NW565EX ...
74
votes
21answers
141k views

How do I set the proper exposure for nighttime moon photos?

All my attempts to get a good shot of the full moon with my DSLR result in an overexposed circle on a black background. I've tried using a tripod, remote shutter release, low ISO, and long exposure, ...
4
votes
1answer
368 views

Collodion / Wet Plate: How to guess the exposure time?

How can I guesstimate the exposure time for a collodion wet plate? Any helpful hints? I have a lightmeter, a Sekonic 308, so I can take measurements. I know that the age of the collodion plays into ...
1
vote
1answer
291 views

Film counter went backwards while in camera bag

I’m new to film photography and I have a lomo aquapix. ( it can be considered a toy camera ) I shot 18 frames and put the camera into my bag. When I took the camera out of the bag the film counter ...
3
votes
2answers
149 views

When enlarging with no contrast filter, photo comes out extremely dark. What am I doing wrong?

When enlarging b&w 35mm film in the darkroom, I cannot get a decent print unless I use a 0 or 1 grade filter. If I use no filter, the print turns out nearly completely black (even at exposure ...
2
votes
5answers
2k views

Does a full frame lens require more light on a crop body? [duplicate]

When using a full frame lens on a crop body, does the lens require more light? If I use an f/2.8 full frame lens on a crop body, does it become an f/4.2 (*1.5)?
0
votes
2answers
102 views

Reference exposure settings for some common situations [duplicate]

I will be thankful if someone may provide me with a reference exposure settings for different situations like landscape and group on a sunny day, jungle, hilly areas, portrait at night indoor in faint ...
0
votes
4answers
14k 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 ...

1
2 3 4 5
16