problem with my 5dmkii

[phildaintith]

ok, well iv had my 5dmkii for about a month now and have noticed alot of red and blue dots on night images when using the bulb function. iv installed the 2.0.4 firmware from the origional 1.0.2 (i think it was on)

any ideas?

cheers, phil

 

[aligibbs]

What length of exposures?

 

[phildaintith]

anything from around 30 secs onward, the longest iv done is about 20 mins in which it still occured

 

[Deleted member 3428]

It is normal to get a few stuck pixels when using long exposures, there is a function you can enable called "long exposure noise reduction" in the custom functions. It will increase the processing time the camera takes to render the image though but it sorts out your worries.

 

[phildaintith]

ahh ok, i just thought it was a bit odd- i have never once used it on my 40d, so in theory a camera 3 times the price should not have that problem...

its no biggy as you can only notice it when you zoom right in, noone would probably notice unles i really pointed it out to them (i hope )

 

[aligibbs]

I think lightroom will auto detect them and sort them out too (possibly, maybe?)

 

[Spiritflier]

I think lightroom will auto detect them and sort them out too (possibly, maybe?)

Yeah, it does sort it out... Adobe Camera Raw removes them from my long exposures too.

Si

 

[Scarecrow]

All cameras will suffer this, irrespective of cost. Hot pixels become really evident under the conditions you are using - long exposures of dark objects. Sensor heat builds up with longer exposures and can cause a few pixels to show the symptoms you describe.

 

[ChrisH]

Mine had loads, sent it back to Canon for a new rear screen that failed, adding in that there where a large number of Hot and stuck pixels at long exposures.

Came back with none, not one iffy goofy stuck pixel at all.

And that is without mapping out, straight from the raw data

If there are loads give Canon a bell and see what they say, don't wait until your warranty runs out.