how to wipe/clean rear lens back to factory condition?

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I recommend to use a drop of sensor cleaning liquid on a clean cloth to remove the organic residuals of the Zeiss wipes (I don't use them anymore because they leave a lot of residuals). Sensor cleaner doesn't leave any residuals. Don't put the liquid directly on the glass to avoid that it "creeps" around the corner of the glass to the inside of the lens.
Then use a dry cloth.
Always use clean or new microfibre clothes.

Deionized water or distilled water won't remove organic residuals.
 
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When I need to clean a lens I use the same things I use for my telescopes which is as optically safe as you can get and safe for coatings. Kimwipes and optical glass cleaner from StellarVue in my case. I also try to use the safest possible method. This is a good example for a telescope but would apply to anything photography lens.

 
When I need to clean a lens I use the same things I use for my telescopes which is as optically safe as you can get and safe for coatings. Kimwipes and optical glass cleaner from StellarVue in my case. I also try to use the safest possible method. This is a good example for a telescope but would apply to anything photography lens.


Surprising that they use cotton swabs for the cleaning, and say never touch the glass with the microfiber cloth.
 
Surprising that they use cotton swabs for the cleaning, and say never touch the glass with the microfiber cloth.
I think it’s because most people don’t properly clean a microfiber cloth and inadvertently rub tiny grit all over the lens. I think only sterile lint-free cotton swabs are what they want people to do. I actually use some old APS-C sensor swabs. Basically the same thing and I have a bunch of them.
 
I think it’s because most people don’t properly clean a microfiber cloth and inadvertently rub tiny grit all over the lens. I think only sterile lint-free cotton swabs are what they want people to do. I actually use some old APS-C sensor swabs. Basically the same thing and I have a bunch of them.
Thanks - would you share an links to a suggested swap product?
 
thanks! I’m fairly certain the lens is ok. It was a new lens and I only touched it very lightly. It just bothers me that the lens doesn’t look pristine after using the wipe.. I don’t know if it makes sense…

I used those little zeiss wipe packet from Steve’s in my bag link..
Sometime I will use distilled water. I will dip a Q-tip in distilled water and gently in a circular motion swap the area in question. I then take a piece of lens paper or lens cloth and wipe it clean. That will usually remove the residue you are seeing. Just be gentile.
 
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