Questions tagged [exposure-correction]
Exposure Correction
31
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ISO blinking on Olympus omd10 ii how to correct exposure
Using Olympus omd 10 ii with kits lens 14-42. My question is mode set in A, therefore shutter speed adjusts accordingly , I hope. Trying to photograph late afternoon/ dusk and iso is blinking. I ...
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469
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Simple function to simulate different shutter speed / exposure by changing RGB values of image
What mathematical function can I apply to each pixel of an image to simulate an increase in shutter duration of a camera?
E.g. Let's say I have an image shot at 1/60s shutter speed. What function can ...
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How does the wireless flash protocol control exposure corrections?
The Panasonic Lumix series uses the wireless flash protocol developed by Olympus.
The protocol features multiple groups of flash lights than can be controlled individually.
I have a question regarding ...
- 443
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I Dropped my nikon D3300 [closed]
A few days ago I dropped my Nikon D3300. I then found it is taking overexposed images while all the settings are correct. The meter in manual mode misguides me even in daylight. At ISO 100, f/5.6 it ...
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2
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Where can I find color data for X-Rite ColorChecker Classic?
I would like to use the grey patches row of my X-Rite ColorChecker Classic to set correct exposure in post processing, but I can't seem to find the data for the chart on X-Rite website or elsewhere.
...
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2
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Random EXIF data with same camera settings
I have a few problems with exposition with my Canon 70D: with same camera settings I get random EXIF data for focal lenght and aperture.
This is the setup
Table with white paper as white background....
- 313
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4
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511
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Fixed camera and light settings return different exposure
I have this situation while shooting still life photos of e-commerce products, lets say for example leather shoes or leather bags:
Table with white paper as white background.
Two strobe flash lights ...
- 313
1
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1
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Post-processing goal: three different exposures?
I took a photo yesterday on Roan Mountain, on the AT.
In the foreground is an overgrown meadow. Midground is a nearby mountain, dark in contrast with the sun setting just over it. In the background, ...
- 113
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What is the formula to calculate aperture ("diaphragme" in French)?
Let's say I have these data for my camera:
t : Exposure time in seconds ("temps de pose" in French)
C : Incident-light meter calibration constant ("constante lumière incidente" in French)
S : ISO ...
- 109
-1
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3
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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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Change exposure settings while shooting with intervalometer
I own a Canon 77D camera with built-in intervalometer. I can set the interval in seconds between shots and set it to either shoot indefinitely or a fixed amount of shots. When I shoot the sunrise or ...
- 193
2
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2
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547
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How to programatically adjust exposure based on image metadata?
As part of a photogrammetry project, I took a number of photos (in NEF RAW format) of an object using manual settings on a D800. However, I forgot to turn off auto-iso (argh!). So, all my photos ...
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why exposing with 18% gray card does not give IRE near 40?
I am trying to understand how to get perfect exposure using gray card.
With my Sony a6500 using ITU709 gamma, I locked exposure by doing spot metering on the gray card.
When importing in final cut pro ...
- 224
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2
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625
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Exposure compensation after images are taken
I have a stack of image tiles (taken from a drone) that I want to mosaic to a single image. I want to do exposure compensation to reduce the variation in illumination between the image tiles before ...
2
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4
answers
265
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Exposure correction for a portion of an image
I have a photograph that was taken on stage in a theater. The photo was taken with a Nikon D3100 camera with flash in auto mode and stored as both raw (.NEF) and jpeg file. Because spotlights were ...
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