Alley in Pisa, Italy

by Lars Kotthoff

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sensor pixels which appear brighter than surrounding pixels

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22
votes
9answers
4k views

How do I remove dead pixels from a digital photo?

I have a Nikon D90 and until recently it has been working just perfectly. While viewing a set of photos I had taken I'm starting to find these little nasty dead pixels: They only show up when ...
13
votes
2answers
2k views

Should I be concerned about sensor heat and the development of hot pixels?

Since I shoot a lot of pictures in Live View mode and from time to time I do some short movies, I've developed a paranoid sensation that I'm going to burn the sensor. I'm aware that live view mode ...
11
votes
1answer
287 views

Are hot pixels just one pixel?

I have been taking a few astro photos on a very high ISO, and have found what I think to be a few hot pixel. I though at first that I had managed to get a few very sharp pic of some red and blue ...
9
votes
3answers
2k views

Does long exposure cause hot pixels in photos?

Today, I was taking some shots of night sky. For each, I had 20 sec exposure. During picture review, I found a red dot which is referred as "Hot Pixel" according to some people on the Internet. ...
7
votes
5answers
6k views

Why is my camera showing a lot of stuck red and white pixels?

After shooting for one hour with my Rebelt2i + Tamron 17-55 f2.8, I went back home and checked pictures on my computer. For every single picture, there are a lot of 'dead' pixels at the same ...
7
votes
1answer
317 views

Why don't we get hot pixels when using live view?

Why don't we get hot pixels while using live view mode, but do get then on a long exposure? I read somewhere that they appear due to the sensor being activated for too much time, but then, live view ...
7
votes
1answer
305 views

Are there bad effects of frequent pixel-mapping?

I read on two different sites that pixel mapping should be done once or twice a year. But sometimes I end up doing it once a month. Will it have adverse effect on the CMOS image sensor?
6
votes
2answers
1k views

Olympus OM-D developing hot/dead pixels within two weeks of purchase

I recently bought an Olympus OM-D on holiday and took around 2000 photographs in the 2 week period on holiday. On day 12 it developed some white/pink pixels on the sensor. I've emailed Olympus ...
5
votes
3answers
2k views

How common are hot pixels on new cameras?

How common are hot pixels on new cameras?! I read that people may check up to 5 cameras at stores to actually find a perfect one, is this true? so how commons is this? what is the chance of getting a ...
5
votes
2answers
133 views

Why some pixels become hot pixels?

What is the physical explanation to hot pixels? What happens to the sensor when a good pixel become an hot pixel?
4
votes
2answers
422 views

What is this dead pixel problem really called?

On all photos from my last vacation I see this red point. It appears on in-camera JPGs as well as on RAW files. A see a red pixel in the same position on all pictures. How is this problem called? Is ...
3
votes
4answers
619 views

How to get rid of dust or hot pixels

Sometimes shooting a long exposure results in hot pixels and some times dust on lens becomes apparent if shooting with very small aperture. Despite having all good qualities the photo looks ugly due ...
3
votes
0answers
341 views

Why do I have a red dot in every photo? [duplicate]

Possible Duplicate: Why is my camera showing a lot of stuck red and white pixels? Every picture that I took today have a red dot on the same place in every photo. It looks like a monitor ...
2
votes
4answers
183 views

Are these strange splotches on buildings in a long-exposure photo hot pixels?

This is the first time I've seen this in my pictures and can't quite figure out what it is / how it fix it / or how to avoid it in the future. Was wondering if anyone here had any ideas? The thing in ...
2
votes
1answer
91 views

Little cross on photos with slow shutter speed. Is this a hot pixel?

I found this strange little cross on pictures when I was doing some long exposure photography. I have had some experience with hot pixel in the past, but this thing seems completely new to me. (1:1) ...