Bought a D700, didn't see this coming
Discussion
My first night's shooting rendered wholly unusable by hot pixels.
D700 hot pixels
(100% crop, ISO500, 217secs)
Massive leap backwards from my D300. Seems if you search for noise the reports are great (and to be fair I've used it for low light snaps at high ISO and it's a big improvement over my old body). Search for hot pixels, however, and it's a common issue the only remedy for which is in-camera long exposure noise reduction.
That can't be right, surely? Any D700 users encountered anything similar, or found links to others' experiences?
D700 hot pixels
(100% crop, ISO500, 217secs)
Massive leap backwards from my D300. Seems if you search for noise the reports are great (and to be fair I've used it for low light snaps at high ISO and it's a big improvement over my old body). Search for hot pixels, however, and it's a common issue the only remedy for which is in-camera long exposure noise reduction.
That can't be right, surely? Any D700 users encountered anything similar, or found links to others' experiences?
AndWhyNot said:
Search for hot pixels, however, and it's a common issue the only remedy for which is in-camera long exposure noise reduction.
I thought that was a common issue to digital image sensors with no reference to a particular or specific model (assuming you are referring to random pixels rather than dead ones) - or am I just being thick (as is normal)?D300 for rough comparison
D300 hot pixel
Not a direct likeness as this is a shorter (115sec)/ lower ISO (200) frame but I struggle to spot single hot pixels off the D300, even after 95,000 exposures, where the D700 is absolutely littered with them across the whole frame. Even my D80 with its horrendous amp noise never suffered any great degree of hot pixels.
D300 hot pixel
Not a direct likeness as this is a shorter (115sec)/ lower ISO (200) frame but I struggle to spot single hot pixels off the D300, even after 95,000 exposures, where the D700 is absolutely littered with them across the whole frame. Even my D80 with its horrendous amp noise never suffered any great degree of hot pixels.
AndWhyNot said:
My first night's shooting rendered wholly unusable by hot pixels.
D700 hot pixels
(100% crop, ISO500, 217secs)
Massive leap backwards from my D300. Seems if you search for noise the reports are great (and to be fair I've used it for low light snaps at high ISO and it's a big improvement over my old body). Search for hot pixels, however, and it's a common issue the only remedy for which is in-camera long exposure noise reduction.
That can't be right, surely? Any D700 users encountered anything similar, or found links to others' experiences?
Ouch.D700 hot pixels
(100% crop, ISO500, 217secs)
Massive leap backwards from my D300. Seems if you search for noise the reports are great (and to be fair I've used it for low light snaps at high ISO and it's a big improvement over my old body). Search for hot pixels, however, and it's a common issue the only remedy for which is in-camera long exposure noise reduction.
That can't be right, surely? Any D700 users encountered anything similar, or found links to others' experiences?
I take it the body is secondhand?
How many actuations?
dxbtiger said:
Ouch.
I take it the body is secondhand?
How many actuations?
Used (with warranty!) - 3k actuations vs 95k on my D300I take it the body is secondhand?
How many actuations?
Will try that mapping technique above, plus I think it needs a firmware update. Might not make a difference although most of the talk of hot pixels is from when the model was new - maybe later firmware addressed it.
Dumb question: don't all DSLR's suffer from quite a number of hot pixels during long exposure and the in camera noise reduction gets rid of them after each shot?
I've never turned noise reduction off on any of my cameras.
On my old D90 I once turned the camera off after the photo was taken (by accident) before the camera had time to do its noise processing and the image was littered with sparkling hot pixels!
That was on a 9 month old D90 with only a few thousand shots.
Am I missing something?
I've never turned noise reduction off on any of my cameras.
On my old D90 I once turned the camera off after the photo was taken (by accident) before the camera had time to do its noise processing and the image was littered with sparkling hot pixels!
That was on a 9 month old D90 with only a few thousand shots.
Am I missing something?
NinjaPower said:
Dumb question: don't all DSLR's suffer from quite a number of hot pixels during long exposure and the in camera noise reduction gets rid of them after each shot?
Not necessarily, I never have long exposure noise reduction turned on (to avoid even longer periods of sitting about doing nothing) and don't have an issue, earlier bodies I had did.NinjaPower said:
Dumb question: don't all DSLR's suffer from quite a number of hot pixels during long exposure and the in camera noise reduction gets rid of them after each shot?
I've never turned noise reduction off on any of my cameras.
On my old D90 I once turned the camera off after the photo was taken (by accident) before the camera had time to do its noise processing and the image was littered with sparkling hot pixels!
That was on a 9 month old D90 with only a few thousand shots.
Am I missing something?
When taking multiple long exposure images for stacking in PP, in camera noise reduction is a complete pain in the proverbial as it doubles the amount of time required. Not so bad if you are only taking 1x30 second image, but intolerable if you are taking more than 20. I've never turned noise reduction off on any of my cameras.
On my old D90 I once turned the camera off after the photo was taken (by accident) before the camera had time to do its noise processing and the image was littered with sparkling hot pixels!
That was on a 9 month old D90 with only a few thousand shots.
Am I missing something?
DIW35 said:
When taking multiple long exposure images for stacking in PP, in camera noise reduction is a complete pain in the proverbial as it doubles the amount of time required. Not so bad if you are only taking 1x30 second image, but intolerable if you are taking more than 20.
Yep, I do find it a pain.I've sat in the cold and the wind on many a night for endless minutes while the camera flashed 'JOB NR' on the display...
Very tedious.
I just didn't think there was much of an alternative to letting it do it's job.
I've been using a D700 for a while and never encountered this problem, having never turned in-camera NR off. It might be worth taking the hit and just letting the camera do it's thing for the sake of 30 seconds or so; it will probably take you longer to edit the problems out per image.
Rogue86 said:
I've been using a D700 for a while and never encountered this problem, having never turned in-camera NR off. It might be worth taking the hit and just letting the camera do it's thing for the sake of 30 seconds or so; it will probably take you longer to edit the problems out per image.
Trouble is it's not just 30secs. It's however long the preceding exposure lasts. In the case of the image above that's 4 mins- some last much longer than that. Further it renders impossible the practice of sequence stacking, and applies twice the drain on battery per shot.Gassing Station | Photography & Video | Top of Page | What's New | My Stuff