I think there are actually 3 - 5 stages of sensor cleaning:
stage 0: use camera cleaning itself (of little use in my experience), check result
stage 1: use blower a few times at angles, check result
stage 2: use lenspen gently, check result
stage 3: use fluids, check result.
stage 4 : if still full of blodges at f/22 try a professional service.
So : do not forget about stage 2 BEFORE going to stage 3, the very last and most - potentially - destructive one. Good luck!
Fully agree, esp the last comment. Doing stages 0-2 properly and checking the sensor with an illuminated magnifier is tbe best protection against causing damage at stage 3.
My only addition is that I would use a Copperhill brush before the Lenspen at stage 2.
If you do stages 0-2 regularly and change lenses carefully then stage 3 should be needed only rarely. Things tend not to stick to the NEX sensor (AA filter) like they do in a dSLR.
Thanks to both of you for taking the time to respond and for the good input. Yes, the time has come for a wet cleaning. I'll proceed carefully, and will soon have a nice clean sensor again.
Again, thanks to each of you who took the time to reply.
- Canon EOS M58.8%
- Panasonic G85/G803.3%
- Panasonic FZ2500/FZ20001.9%
- Panasonic LX10/LX151.2%
- Panasonic GH5 development3.6%
- Sony a99 II15.9%
- Nikon KeyMission 170 and 801.0%
- Fujifilm GFX 50S development28.3%
- Olympus E-M1 II development18.7%
- Olympus E-PL80.1%
- Olympus 25mm F1.2 Pro1.5%
- Olympus 12-100mm F4 IS Pro1.9%
- Olympus 30mm F3.5 Macro0.1%
- Sigma 85mm F1.4 Art3.6%
- Sigma 12-24mm F4 Art2.6%
- Sigma 500mm F4 DG OS HSM Sport2.4%
- YI M12.2%
- GoPro Hero50.8%
- GoPro Karma drone2.2%