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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56 views

Metering red lights in film photography

I’m a film user and I measured this using a sekonic L508 meter. The light is led continuous light reflected to the ceiling. Why is the face detail blown when I used the light meter? Does red light ...
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1answer
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Why does my nikon 910 flash fires 2 short flashes before final fire

I am using Nikon D750 camera and Nikon Sb910 flash. I am missing the timing of action because of this delay of flash firing.
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Errant lights in long exposure at night

I've been trying to get some images of the milky way. I was is central Sardegna near some neolithic ruins as a backdrop. A few images had this odd squiggles of light. Not every frame has it. It's ...
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Scene exposure where there's black-blacks, white-whites and a mid grey subject?

The scene contains high key highlights (a X/10 on Ansell's System PLUS Black (0 on Ansell's). Your subject - a mountain - is a mid range (5 - Ansell again). To get the best exposure in the photograph ...
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1answer
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D7500 exposure changes when in “M” mode and zooming video

Using a 16-85 3.5-5.6 lens. Taking a head and shoulders video at 1/60 and f5.6 in mode "M". This is the exposure I want to lock in. When I zoom out and include some darker areas in the ...
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Light source giving wrong color

I have been trying most of the settings in my Nikon D3500 to take indoor pictures of my home in dusk situation, or at least what you think is dusk situation, it is hard to explain. I have a very ...
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How to Read RawDigger Histogram with EV

I newly have just started to use RawDigger for inspecting raw image quality. However, still I am not too familiar with all its properties/concepts, and I am specifically confused with how to read ...
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3answers
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For the same FOV and f-stop, will total luminous flux increase linearly with sensor area?

Suppose I have two different cameras, one with a sensor whose area is twice the other's. Further assume the sensors have the same aspect ratio. Suppose I put 35 mm-equivalent lenses on both, thus ...
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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-...
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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 ...
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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 ...
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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 ...
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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 ...
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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 (...
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361 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 ...
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1answer
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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 ...
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558 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 ...
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2answers
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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 ...
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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 ...
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7answers
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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 ...
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2answers
172 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 ...
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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 ...
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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 ...
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1answer
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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 ...
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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 ...
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3answers
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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 ...
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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?
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2answers
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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.
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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 ...
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1answer
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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 ...
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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 ...
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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-...
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1answer
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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 ...
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1answer
128 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 ...
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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 ...
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3answers
203 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 ...
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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 ...
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1answer
351 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 ...
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1answer
333 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 ...
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2answers
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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 ...
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5answers
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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 ...
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6answers
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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 ...
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2answers
106 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 ...
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1answer
108 views

How do I meter with a split ND filter?

As a present1 to myself I am renting a Mamiya RB67 kit for 2 weeks. One of the things I want to try is to take some sunsets using a split ND filter. The kit doesn't come with a metered viewfinder, ...
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2answers
106 views

Generate a sequence of exposure time options mathematically [duplicate]

Is there a way to generate a sequence of usual/standard exposure time options mathematically? Something like 1/5000, 1/2500, 1/1500, 1/1000...1/500, 1/250/ 1/125...1/60...1/30...1/8, 1/4, 1/2, 1, 2, 3,...
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Real light increments using aperture scale in fractional stops

In the case of using f-number with full stops, the +1EV step means 2*light because the Area (A = πr^2) in the diaphragm is doubled (i.e. radius*√2). However, I don't know why in fractional stops such ...
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2answers
120 views

How do I determine the light output of LED lights for close-up photographs of indoor plants?

is there a method to determine the light output of LED lights needed to achieve a reasonable ISO/shutter/aperture combination to take close-up (not necessarily macro) photos of indoor plants given a ...
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4answers
1k views

What is the role of Shutter Speed while using a Manual Flash?

The relation that allows us to set the aperture or to choose the distance to take a photo with correct brightness while using a manual flash is this one: Guide number = f-number × distance, For a ...
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1answer
438 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 ...
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1answer
920 views

Correct Exposure with Polaroid One Step 2

I have a Polaroid OneStep 2 with itype film, and I have some problems on how find the correct exposure. Precisely, almost always I get a picture which is overexposed or underexposed, and I do not know ...

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