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| Moderated by: chrisbet, | ||
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chrisbet
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Sun came out today so tried the 850 with the 28-70 2.8 and the 80-400 4.5-5.6 NIKON D850 f/8.0 : Speed 1/250 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED Cropped -  NIKON D850 f/8.0 : Speed 1/250 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED This dot appears on all images from both lenses - dust on sensor?  NIKON D850 f/8.0 : Speed 1/250 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED |
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chrisbet
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long shot of the jag up the driveway  NIKON D850 f/5.6 : Speed 1/60 : ISO 64 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED and a small plane overhead  NIKON D850 f/10.0 : Speed 1/400 : ISO 64 : Lens AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED and crop plus post  NIKON D850 f/10.0 : Speed 1/400 : ISO 64 : Lens AF-S Zoom-Nikkor 28-70mm f/2.8D IF-ED |
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jk
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Yes the dot is dust on the sensor. Sensor needs a clean, try the built in shake clean and if that does not work then a wet clean is necessary. https://nikondslr.uk/view_topic.php?id=1576&forum_id=17&jump_to=17695#p17695 |
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chrisbet
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I tried the camera sensor clean - no difference so I locked the mirror up and used a blower - the large spot has gone but pixel peeping shows many small specks. Probably too small to affect the images significantly. I am reluctant to use wet cleaning, though I do have some sensor swaps in the cleaning kit. Any recommendations for a camera cleaning service? Fixation? ACS? |
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jk
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I have always cleaned my sensors from my D1 right the way through to my Z7 and Z8. Newer cameras are easier than the older one. Your D850 is relatively easy. If you can take a camera apart then you have the skills to do the clean yourself. I have friends who use Fixation but I am sure ACS can do it. Some camera shops offer the service as well. |
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chrisbet
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Hmmm - tried twice now using a sensor wipe just lightly moistened with cleaner still got some dust / marks / fibres  NIKON D850 f/16.0 : Speed 1/125 : ISO 200 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED need to pixel peep to see them - thisis a 200% crop - am I being too picky ?   NIKON D850 f/16.0 : Speed 1/125 : ISO 200 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED |
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jk
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The fibres can be blown away with a Giotto Rocket blower. Make sure that blower has a filter on way into or out of the blower otherwise you get dust from the inside of the blower (rubber perish particles or dust from air). A really stubborn greasy dust bunny may need a couple of cleans! Patience. Test at f16/22 shooting in sky (blue sky or 100% grey, no cloudy) as this means you see all the dust specks. If you shoot at f5.6-f8 then you wont see them in the images. This applies to real life images as well as shooting to check for dust. |
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chrisbet
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Lol - the pics were as per your recommendations - f16 ISO 200 blue sky. The particles are MUCH clearer in camera at max magification. |
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Eric
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One of the challenges in sensor cleaning is finding the specks. Remember they are “upside down”…speck towards the base of viewfinder screen are towards the top of the sensor. I use to be quite careful, with a couple of drops of fluid. But as time went on I gave it a good wash…on the basis a dry swap would do more damage. The solvent soon evaporates with lens off. If you can locate the spot leaving the damp swap on the spot for a moment then redoing a clean may work. You can also get sticky end things to lift visible specks. My approach was to at first move the mark. If you can do that you have a chance of lifting it off. If all fails you can take a reference photo against a white wall and use it as a subtraction layer in your editing programme. |
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Eric
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chrisbet wrote: I don’t think you are being picky. I can locate it on the full image you posted. It would niggle me (even though you wouldn’t see it at f5.6) as I knew it was still there waiting to get its mates round.  |
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chrisbet
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It? Lol - I can see at least 7 "niggles"  I have ordered some full width swabs and specialist cleaner - let's see if that works... |
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Eric
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chrisbet wrote: Keep counting  NIKON D850 f/16.0 : Speed 1/125 : ISO 200 : Lens AF VR Zoom-Nikkor 80-400mm f/4.5-5.6D ED The “IT” was the most obvious one…maybe 3. I just think you need to be more courageous with the cleaning fluid and do it several times. It’s been much exposed to contamination over recent weeks I guess. A full size swap would work on a final one sweep clean, but any size swab with fluid should be capable of more local attention. |
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chrisbet
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Ok, more courage ordered as well ... |
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jk
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Eric wrote: I wouldnt use those sticky pad/prods. I agree with Eric's general approach to the difficult to remove dust spots. If you use too much fluid you need to wait until it evaporates 20-30mins. |
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chrisbet
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I have looked carefully with a loupe at the sensor - I can't see any particles to lift with a gummy stick! If the camera is as well used as the shutter count suggests then I guess it is not surprising the sensor is dirty |
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Eric
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chrisbet wrote: If it comes in a bottle with golden brown liquid…..it will do to clean the sensor as well |
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Eric
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jk wrote: Never used them. I didn’t realise it took that long. Guess its probably a low bp solvent? I was never that patient. Lol i did get a (brief) strange camera malfunction after one cleaning. Took the lens off, put it back on and it had cleared. Probably had an inebriated sensor. |
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Iain
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I only use the fluid and swabs and never had an issue with them. May take two or three goes when the sensor is badly affected with spots. |
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chrisbet
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Specialist cleaner and swabs arrived today - took 4 more washes to shift the specks on the D850 - there may be a few tiny ones left around the edges but I am quitting while I am ahead! Amazingly, the D810 that I did all the work on had very few dust bunnies - one wash got them gone. I must say I was a bit concerned because these cameras have no low pass filter over the sensor, so you are working directly on the most sensitive part..... |
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jk
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Well done Chris. Persistence pays. Remember to switch on the Clean Sensor at Power Down in the menus. |
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Eric
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chrisbet wrote: I think you are wise to stop. You can chase your tail getting edges 100% clean when invariably most peopl crop the images to some extent. I wonder if the owner of the 810 was just more attentive than the 850 owner? The sensor itself does have a protective glass surface which is the same resilient material as filter glass …so swabbing should be no less a concern…unless using a Brillo pad (or dry swab) |
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chrisbet
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Possibly, the history of both bodies is unknown but the high shutter count of the 850 (740,000 ish) suggests maybe professional use. I spent a lot of time blowing bits out of the 810 as I built up and shaped the missing plastic of the shutter box - maybe that helped clean dust off the sensor? Anyway, super happy with both now and the 610 sold for good money this afternoon. Remember to switch on the Clean Sensor at Power Down in the menus. Yes, master  |
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jk
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If you follow some tips like ..... the Self Clean, Change Lenses with Body throat facing down, Don't change lenses in windy conditions, then the self clean seems to stop most dust. Changing the lens with camera body throat down or definitely NOT facing upwards is a winner! One thing that is not obvious is do not store camera on its back as any dust dislodged will then fall back onto shutter or sensor. These days I find I seldom need to clean my camera(s) sensors. This is possibly because I am not shooting every day but also because the newer sensors are not dust magnets like the older ones but also because of following the simple tips above. |
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chrisbet
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Apart from the sensor self clean (now set) those are what I always do - my D90 and D610 never suffered from dusty sensors and I am hoping these two remain dust free. I like a suggestion I saw elsewhere which is to put some double sided sticky tape inside the lens and body caps to catch any errant dust |
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| A small amount of member data is captured and held in an attempt to reduce spammers and to manage users. This site also uses cookies to ensure ease of use. In order to comply with new DPR regulations you are required to agree/disagree with this process. If you do not agree then please email the Admins using info@nikondslr.uk Thank you. |