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Author Topic: Fixing bad pixels  (Read 17884 times)
jeffjessee
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« on: July 13, 2009, 06:54:43 PM »

Mike, in version .266, the bad pixel filter seems like a great idea. But is there any reason it could not also be applied to .JPG files from the camera? A lot of times, Canon's version of a JPG looks fine, and it's not worth taking the extra time it takes to edit a raw file (I'm speaking mostly about applying filters, which is much slower than with a JPG.). Even if we had to create a separate filter for JPG's, that would be fine.

Thanks,
Jeff
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« Reply #1 on: July 13, 2009, 07:06:04 PM »

Mike, in version .266, the bad pixel filter seems like a great idea. But is there any reason it could not also be applied to .JPG files from the camera? A lot of times, Canon's version of a JPG looks fine, and it's not worth taking the extra time it takes to edit a raw file (I'm speaking mostly about applying filters, which is much slower than with a JPG.). Even if we had to create a separate filter for JPG's, that would be fine.

Thanks,
Jeff


Most cameras already remove bad pixels from the JPEGs: just not the raw files.  If you want to remove bad pixels from JPEG's though, you could always use the batch filter and just create a bad pixel map using the blemish filter.  Just save the filter and apply it when needed.

Mike
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jeffjessee
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« Reply #2 on: July 13, 2009, 09:24:21 PM »

Mike- I tried fixing the bad pixels as you suggested. I assume I have to apply the "bad pixel filter" I created in the batch file back on the first page using the Global Filter, to apply it to all images in the queue, but, the problem, when I tried to check the filter by recalling it with a second image in the batch filter, the other filters I had on the image disappeared, which is why I figured I would have to apply it as a global filter. But what bothered me, looking at the same coordinates on the preview after recalling the filter, the bad pixel is still there  Angry(a red pixel with a couple of pink pixels on each side). Why is the bad pixel still showing up on the preview Huh? Can you verify what I'm describing, or should I send you the files?

Thanks,
Jeff
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Terry-M
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« Reply #3 on: July 17, 2009, 09:19:10 AM »

Global Filter, Help says
Quote
Important: individually assigned filters override the global filter,
So, using the Global filter is ok if you don't need anything else.

When you load a predefined filter from the filter screen, it will over-write anything already there. If you want to ADD a filter to one already there, select the thumbs or images in the queue, right click and use Apply Predefined Filter.
Terry.
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jeffjessee
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« Reply #4 on: July 17, 2009, 10:27:05 PM »

Terry-

Global filter working the way you suggested does explain the problem. Thanks. But this means the Global filter is useless for me, as I can't remember ever printing an image without applying SOME filter to it. So the global filter would never get applied, if I understand correctly. How about the Print filter? Would that get applied and added to the filters already attached to each image in the queue, specifically, would it add the one or two extra blemish data coordinates used to correct the bad pixel  to the blemish data that was already in that image's filter?  Your method of selecting all the images and then applying the filter seems to work, but if I could just set up the print filter once, since I would need it for every image I printed (till I get a new camera), that would be a simplier, less likely for me to forget, solution. Us old codgers need all the help we can get.

Thanks,
Jeff

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Terry-M
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« Reply #5 on: July 18, 2009, 07:53:53 AM »

Quote
How about the Print filter? Would that get applied and added to the filters already attached to each image in the queue, specifically, would it add the one or two extra blemish data coordinates used to correct the bad pixel  to the blemish data that was already in that image's filter?
Yes.
Remember that you wont see the effect of the print filter on screen, only on the print.
Terry
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