boring hot pixel quesion

[palmerfralick]

Got a brand new R-D1x. Had been using Aperture 2.1.4 on a G5 Mac. I processed several shots through Aperture, pics look great. I then ran a few shots in B&W through Epson raw and noticed a very visible hot pixel. I did the pixel remap in the camera and that pixel was gone but 3 others appeared (with lens cap on). Remapped 3 or 4 more times but was never able to get rid of all of them. I then loaded these shots into Aperture. You could still see the HP's as the pictures were loading but when the upload was done the HP's were gone. Since Aperture obviously takes care of HP's should I send the camera back for another one or just accept it as status quo? I only shoot raw and did not try this in Jpeg + Raw. Ps The store I bought it from in Japan gave me the choice of exchanging for another new one or sending mine to Epson for a repair, he also said they had had more problems with the R-D1x than with the R-D1s. What would you do?

 

[Guaranteed]

If the software is sorting it out I'd keep it.

 

[rollbahn]

That's very odd as A3 doesn't take care of hot pixels so it would be very strange that A2 would have that function. Raw Photo Processor gets rid of them so I have used that or I clone out in A3.

You paid for a new one so I would get one that works. Hot pixels are a fact of life but if you have the chance to exchange then why not.

 

[kennylovrin]

I've noticed this as well though in Aperture 3. If I shoot RAW and open in Aperture I see no dead pixels, but if I open in Photolier i see them. Or, if I shoot RAW+JPEG, I see the dead pixels in the JPEGs but not in the RAWs.

I found it slightly weird I have to say, I haven't tried doing a pixel mapping though as I always shoot RAW only, but I might try doing it to see if it affects the JPEGs. I actually have some pretty huge blobs that appear fully white in the JPEGs.

 

[rollbahn]

I shoot RAW and see hot pixels in files from my R-D1 and GXR M-mount in A3. I did the pixel mapping and that got rid of them in the Epson thankfully.

 

[kennylovrin]

That's really strange, what is it I'm seeing in my JPEGs then? I don't have any example here and now, but it looks very strange in the sense that it looks more like a white dot with a thin black edge. I've never seen anything like it before, but I have several in several places and different sizes, and I couldn't imagine it to be anything other than dead pixels.

I'll try to do some examples.

Hot pixels though, they can come and go depending on the ISO and exposure time. What I am talking about here are dead pixels that will never work, and I figured they were turned into white in Photolier and the JPEGs (not sure why i'd think that, but like I said, what else could it be otherwise)

 

[kennylovrin]

Here's a little example 100% crop. Both are opened side by side in Aperture 3, the left one being a RAW file and the right one a straight out of camera b&w jpeg.

This is iso 1600, i don't see the problem really in iso 200 etc. But anyway, it's an example of Aperture being able to somehow map out the pixels - or so it seems at least.

 

[ped]

I use Lightroom and I can see hot pixels for a second and then they disappear as they are mapped out automatically.

 

[rollbahn]

Here's a quick example in Aperture 3.3.2 where it's not mapping out hot pixels for me. This was my first or second day with the camera so was mucking around with ISO, shutter speeds etc. I eventually mapped out the pixels via the menu.

 

[kennylovrin]

Here's a quick example in Aperture 3.3.2 where it's not mapping out hot pixels for me. This was my first or second day with the camera so was mucking around with ISO, shutter speeds etc. I eventually mapped out the pixels via the menu.

At closer inspection I actually found one single pixel like this as well that wasn't mapped out by Aperture in one of my images. However the same pixel in other images seemed normal. I think that Aperture does indeed map out what it can, but that it sometimes fails.

anyway, I'm happy I am not seeing the same result in Aperture for RAW as I do in the JPEGs. 🙂

 

[rollbahn]

Indeed anything is better than nothing and maybe you're right that it can't get everything but it gives it a try.