dead pixel? :(

Today I noticed that most of my photos from today evening have this red pixel on t he top left hand corner. Does I have a dead pixel on my sensor?


If so, what do I do? How does it affect me??????/

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You only have one?

When you think about it, it's close to a miracle to have every one of those 8 million photosites working flawlessly. RAW converter makes them disappear for me, I've got 2, I think.

Does it show up in all your pics? That spot seems to line up with the light glare, wonder if there was something floating around in the air? Airplane light in the sky?

I see you had a 4 sec exposure. Do a lens cap on 30 sec exposure and I bet you will see MANY hot pixels. Remeber noise accumulates over time. You will not see it on shorter exposures. At least when you know where they are you can PS them out on the relevant images. I have at least a dozen that appear over about 5 sec

Do you have Long Exposure Noise Reduction enabled? If not, try it. That's just the situation it's meant for. Sensors tend to get hot (causing random noise) as they're exposed longer. Thus, hot spots.

WOW! you mean you are able to know what exposure just by looking at the photos? That's GOOD!
Okie back to my question: What do you mean by "Do a lens cap on"?

I meant take a pic of something completely dark so that it highlights the hot pixels, no background to distract. OP courteously left his EXIF data in the posted image,

That data is embeded in the photo its self...

RWK, nope, same spot in all images from that night. More obvious on some because of darker background (such as sky).

Does the warranty cover such dead pixels??

thanks for the input everyone.

On a side note, what do you thikn about the shot? Taken with the 35 L. Bought it a while ago but never got a chance to really play with it. The image is a JPG straight out the camera, no in-camera sharpening, nor PP.

Corrupted, its not dead, its resting (actually its hot) and I doubt the warranty covers it unless its the same at ISO 100 1/4000th

I think up to 5 dead (hot) pixels are allowed, above that you may claim a replacement.

Like I said, try shooting RAW.

thanks for the input guys.

Actually I think the acceptable amount is .01 of total pixels. So on a camera with 8 million pixels up to 80 hot pixels is ok. And usually that many would only show up with a 10 sec exp or longer at ISO's of 800-1600.

You should be able to set up your post-processing software to interpolate around your hot/dead pixels. For instance, if you used dcraw, you could use a .badpixels file. I'm sure whatever software you use has these settings some place as well, probably not stored in a text file configuration.

I use RawShooterEssentials mainly for raw files.

Does that do it or some sort of similar function?

I seem illiterate in regards to Software only because I fall under the category of photographers that like to use thier best knowledge to take the best images and use s/w for other common uses.