About a month and a half ago I bought a used D200, with E+ rating, from Adorama. It had 20K shutter activations and worked great, until I noticed a hot pixel. In every image, there was a fluorescent green pixel that would not go away. Happened no matter the image quality settings and no matter whether it was RAW or JPG. So I sent it back and got another new (used) E+ D200 from Adorama which I still have. It only had 200 activations (basically brand new) but again, there was a hot pixel. Not in exactly the same spot, and nothing that a casual observer would notice, but since I know about it I find it difficult to ignore.
In searching online I've found that this is apparently a common issue with DSLR cameras. Most people like Ken Rockwell just ignore it and fix it in Photoshop if they really need to:
I'm wondering if other users here have any advice or information on what to do. From what I've read, these sorts of things can come and go and even if I sent this second camera back and got another one with no hot pixels, it could develop the problem over time. It's really not that big of a deal for me, but I'm curious what others have done when faced with this issue.
Is it a stuck pixel, that is is it always hot or only under certain circumstances? I have a D200 that has a hot pixel problem but only under certain conditions so I have lived with it. When it did occur it wasn't that the pixel was white, just lighter than the surrounding pixels. That said, now that I have a D300s I don't use it much anymore so it's even less of an issue to me.
Good question. It's a stuck pixel (I've sometimes heard them called "hot" pixels too, but I don't know which is actually the correct terminology) that is almost always green. However, if the surrounding area is mostly white or light-colored, the stuck pixel ends up as an intense white. Here's an example of the phenomenon:
Yeah, that's kind of my reaction too. I'm new to DSLR photography, which is why I kind of freaked out when I saw a hot pixel on the first D200 we bought. And now that this second D200 has the same issue I'm starting to wonder a bit. I don't want to be overly picky and the Ken Rockwell page and others seem to suggest that they happen a lot and there's not much that can be done:
I guess the real question is, How bad is it? I have a couple of hot or stuck pixels in my D300. They showed up well after the warranty was up and I'm not willing to pay what it costs to get them mapped out of the sensor.
Since I know where they are, I can always find them, but they only really show up in dark backgrounds areas and they're easy to fix in post. With all the millions of pixels in an image, when you print the image do they really show up? Most of the time I ignore them. sometimes when they're obvious I simply clone them out of the image. I don't consider it a big deal, and I probably wouldn't return a used camera because of it.
It is simply part-and-parcel of using digital cameras.
To be honest it's not really that bad, and only noticeable if I'm actively looking for it. It's more of a disappointment than anything, really. In well-lit shots it's hard to see the hot pixel, but I'm not sure how well it would show up on a printed photo. I think I just need to get over this and realize that all technology has problems that we need to live with. And instead of complaining, maybe I should go out and just shoot more photos and work on my technique
Simon, That's one way to look at it--but it would bother the heck out of me to have paid good money for a piece of equipment that was supposedly checked out and ready to go, and have it not be satisfactory. The fact that you got two in a row from the same source like that is even worse. I personally would have to make it right--there are few things in life I am obsessive about, but my photo equipment working to my satisfaction is one.
Wow, thanks so much for all the input, everyone. I've decided to suck it up and keep the camera, and here's what was ultimately the deciding factor: I went back and looked at some photos my friend took a few months when he was showing us his D200. He's been shooting with it for a long time and, sure enough, there were two hot pixels in every photo he took. This guy does photography and graphics work for a living, and here he had hot pixels on his camera just like mine did. His camera isn't perfect, but it has clearly worked out just fine for him. So mine will probably be just fine for me.
I really appreciate all the information you guys have given me, and I just bought Aperture last week so I will be using that to do some easy touch-ups if the hot pixels really bother me. Or I can try Alan's method: shoot in RAW and open them up in ACR and see if they go away automatically