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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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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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 ...
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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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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 (...
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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 ...
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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 ...
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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 ...
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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 ...
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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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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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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
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 ...
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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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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
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 ...
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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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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
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 ...
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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 ...
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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
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 ...
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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
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 ...
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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 ...
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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 ...
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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
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 ...
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1answer
105 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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105 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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3answers
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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
111 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
992 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
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 ...
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1answer
677 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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1answer
136 views

Why did my Canon 80D recommend such a fast shutter speed in near-total darkness?

This morning I went out to shoot the sunrise. I went out well before dawn, and it's one day from the new moon, so it was very dark while I was setting up. I turned the ISO up to the maximum setting ...
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3answers
201 views

Why are all my photos still under-exposed when the settings are correct?

I'm inside a lit room with the shutter speed at 1/125s, aperture is f/5.6 and ISO is 400, but every photo I take is still really underexposed. Even if I have the shutter speed on 1/60s and I hold the ...
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3answers
100 views

Film photography with flash - distorted exposures

I've just started my adventure with film photography. I recently took some photos to get a grip of my Pentax MX camera with AF280T flash. Unfortunately more than half of photos done with flash came ...
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2answers
184 views

How does a camera determine aperture when in shutter-priority mode?

Recently I experimented with using shutter-priority ("Tv" on my Canon DSLR) for images shot from my kayak, because movement is a constant factor in that situation (even if there's no wind, there's ...
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6answers
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Is spot metering just an EV compensation?

I can expose a scene based on EV compensation or spot metering. If I spot meter...can I achieve identical results with EV compensation? Or is spot metering more than just a generic EV adjustment ...
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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.
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2answers
188 views

Gray values on QP card 201

I have a colour standard card QP 201 which I am hoping to use to calibrate gray values in some scientific photos. For this purpose I will need to know the percentage gray values of the gray squares (e....
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2answers
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Why TTL flash exposure compensation doesn't work, but manual settings do on Nikon D3500? [closed]

If I choose TTL in flash control and I set flash exposure compensation, all levels from -3 to +1 look the same. But if I chose manual instead, and I adjust flash power from full to 1/32, the strength ...

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