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Message: <blockquote data-quote="voxmagna" data-source="post: 585714" data-attributes="member: 38477">OK thanks for the feedback and now I'll add another twist: I wasn't being stupid suggesting  vacuum dust removal. Have a look at HEPA air filters sold for vacuum cleaners, some of the best can filter air down to 0.3 micron. My conceptual idea was a zip seal bag with a vacuum hose connector and a HEPA air filter on the bag. Connect the vacuum to the sealed bag (reduce its air flow with a hole in a circular plate), pop in the camera or lenses and dust free filtered air pulls out dust from inside the bag.  I have now bought myself a Carson SM-44 sensor maignifier. It doesn't lock into the Nikon baynet but rests on the ring surface. Now I can clearly see dust. Having just had to fix sensor dust on shots in PS I now realize the more spots you have the harder it gets. As for batch mode spot removal - fine until PS tries to do it where there is picture detail and grabs adjacent detail for the repair! I think Lightroom may be a little smarter but I'm not certain it works with a mixture of landscape and portrait orientations? My conclusion is get rid of dust before you shoot, fix no more than 3 or 4 spots in post and be careful using apertures smaller than f11. Sensor dusts spots are hardly noticeable in detailed or dark areas and I've concentrated on removing them on sky or plain area backgrounds.Blowers, cloths, brushes and buds - all they do is move the dust to somewhere else! Have you noticed when the mirror is up to expose the D750 sensor there is that rough crinkly black surface light reflection stopper? That is a great material to hold dust and hairs then drop it on to the sensor after a mirror slap!My second conclusion is sensor cleaning should not move dust or hairs to somewhere else and I thought I would be the first to come up with this idea - but I'm not. It's a bit off the wall and if you want to try it, experiment on an older unloved camera sensor first.Wet cleaning (alcohol) seems to offer the property of picking up dust but either you buy proprietary cleaners or you must ensure the alcohol and wiper is pure else it will leave a surface smear. I've now tried Blu-Tack (U.K) but I think a similar product is UHU white tack. Wearing clean plastic gloves I wrapped a small ball around the plastic end of cotton bud stick (or cocktail stick?) and shaped it into a blade wedge to get into the corners. Not only does it pick up dust, but it can be gently wiped across the sensor glass surface like a squeegee. Sometimes I found a stubborn mark which was not dust. I don't know where they come from but suspect it is from the atmosphere and wet cleaning first is best. These cleaning parts don't need much space in the bag and you can prepare several disposable Blu-Tack sticks with gloves in advance.The Carson led SM-44 illuminated magnifier is made of plastic and does its job for the price. It comes with a circular zip pouch looking like it cost more than the magnifier - but they didn't make it with slots to fit on a camera strap.</blockquote>

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