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01-27-2015, 08:17 AM   #16
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QuoteOriginally posted by burnt umber Quote
the blower seemed to only make things worse.
Hmmm...that doesn't sound right. I've been using a blower for years to get rid of dust spots, and so far it's worked pretty well. Of course, I haven't shot any skies at F20 lately.

The lowest I usually stop down is F11 or occassionally F13 when I'm working with strobes in my home studio. I do get dust blobs at those apertures sometimes, but the blower has always taken care of it, although it does take a second blowing sometimes.

01-27-2015, 08:24 AM   #17
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QuoteOriginally posted by Edgar_in_Indy Quote
Hmmm...that doesn't sound right. I've been using a blower for years to get rid of dust spots, and so far it's worked pretty well. Of course, I haven't shot any skies at F20 lately.

The lowest I usually stop down is F11 or occassionally F13 when I'm working with strobes in my home studio. I do get dust blobs at those apertures sometimes, but the blower has always taken care of it, although it does take a second blowing sometimes.
Each time I used the blower I got large chunks on the sensor which were showing up when I ran a Dust Check. The spots on the original post did not appear when I scanned the sensor.They must have been too small. I finally got it to the point where no chunks were seen by the sensor scanning and the test came back clean. I still get spotting on the blue skies so I am picking up a Pentax sensor cleaning kit. In the mean time I am just going to clone, clone clone. I generally shoot between f/2.8 and f/11. I don't know why I had the F Stop cranked down for this photo. It was a spur of the moment Idea.
01-27-2015, 08:26 AM   #18
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You are holding the camera in a "down" position, when you are using the blower, aren't you? If not, then whatever the blower removes, can re-deposit on the sensor.
01-27-2015, 08:29 AM   #19
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Also, not all blowers are created equal. You want one that doesn't suck (literally) as it'll just inhale the glop, then spit it back out on your sensor as a larger, more solid blob than before.

01-27-2015, 09:30 AM   #20
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Giottos Rocket Air Blower ....the only way to go


Make sure to keep the camera down when cleaning and if you still have problems, do it in a room that has little airflow which can move dust in the area. The dust check. in my opinion. does not do a very good job of finding true dust. Just point at a blue sky at F22 and you will see your spots. Also remember, the sensor is a reversal of where the picture actually is.Your picture will be reversed so if you see dust on the top of your picture, focus on the bottom of the sensor when using the blower..
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