Linked Questions

-1
votes
1answer
677 views

why do I have red dots all over the foreground of my stars long exposure shot [duplicate]

I have a 60D and have never had this problem before although I have never set the exposure for 30 minutes I am so disappointed its a great shot
15
votes
4answers
15k 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. ...
14
votes
2answers
4k 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 ...
2
votes
2answers
8k views

How to prevent hot pixels? [duplicate]

I've just returned from a trip. One of the locations was very dark site. I took a photo with 4 minutes exposure for the foreground. The photo came out unusable. There are so many red, green, and ...
4
votes
2answers
838 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 ...
5
votes
1answer
2k views

How does in-camera noise reduction compare to software one?

Does programmatically reducing noise reduction the give the same results as hardware post processing in camera, such as on a Nikon D90? What is the best software to do such things (like Photomatix ...
2
votes
2answers
696 views

What is this bright squarish pattern that I'm getting in long exposure images?

I took few long exposures of the night sky yesterday. I know about the hot pixels those appear brighter with longer exposures but this seems to be something different. Can anybody tell what it is? ...
7
votes
1answer
1k views

What's the best way to deal with hot/stuck pixels in long exposure night photographs?

I discovered red/blue/white pixels on my night photographs tonight. Trying to confirm this, I took a black image with the lens on and indeed I saw a whole lot of them (I didn't count them but at least ...
13
votes
1answer
472 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 stars....
1
vote
1answer
665 views

Hot Pixels in Image

I m Using Nikon D80 . When i capture images i n certain images there are hot pixels in that either in Day light or night shot can any one tell why is this happening and any remedy for this. Image is ...