Reddit mentions of ROR Optical Lens Cleaner 2 Oz Spray Bottle

Get yourself some Kimwipes, and a rocket. Maybe some ROOR.

B&W, scan at whatever settings your scanner is capable of. For my Epson V750 I make sure to scan at 2400DPI, just because it doesn't resolve much more than that. I like to make sure the scan area is quite large and picks up all sides of the frame. Use unsharp mask. When in post I add a bit of sharpening back at 40 @ 1px. Add contrast and exposure accordingly. Use 16 Bit Grayscale.

Color is the bane of my existence when scanning. Nothing gets as close as to what I can get on an RA4 print. Colors are going to be a lot more vibrant and contrasty compared to the scan, so I add about 50% more contrast and bump up the saturation a tiny bit. Epson scan is incredibly opinionated, so set all of the scans to not use auto exposure and set the histogram levels accordingly. Don't be afraid of losing highlights. In post do the color correction so it will stay consistent frame to frame. Also add back the sharpening same as B&W 40 @ 1px. Use 24 bit colors.

I had the same type of thing happen after using what I thought was a lens wipe. I finally got a product called ROR (residual oil remover) and that stuff worked magic on what I thought was a trashed lens. You can get that off of Amazon too. http://www.amazon.com/ROR-Optical-Cleaner-Spray-Bottle/dp/B0002HMRF2/ref=sr_1_1?ie=UTF8&qid=1376198897&sr=8-1&keywords=ror+cleaner

I use the same products that I use to clean my camera lenses:

ROR (Residual Oil Remover) sprayed onto PEC-PADs. As previously suggested, I use a bulb blower or compressed air to remove as much dust as possible beforehand.

I got my spanner from Amazon, maybe $20 and it's just fine, has ends that flip for pointed or flat-blade, no problems.

First, I'd go to apug.org and do a search for fungus, lens, cleaning, etc., try a few and there should be a lot of info. There are guys that suggest some particular hand lotion for really stuck fungus, sort of barely-abrasive.

On the RB lenses (and many others), you remove the logo ring first, the ring around the front element that says stuff like "90mm 2.8" and so on - you have to find a rubber stopper that fits, or press a rubber glove onto it with something. If you have a front ring without spanner holes, take it to the hardware store and look for a rubber sink stopper - or a "fernco", which is a short rubber tube with thick walls, used to join two pipes together - they usually have pipe clamps on the ends. (Fernco is a brand, they're "flexible plumbing adapters"). Just something that will press on the lens without hitting the glass. You push down hard on it (if necessary) and use it to get the ring loose, and then unscrew it. They're just a couple bucks.

In my case, the front element then lifted out, and the fungus was on the lens group under it, which (I think I recall) had a ring that needed the spanner. I took the element out, blew off any dust, and used a q-tip with peroxide - I'd try not to "soak" anything if possible. That took the spot of fungus off, and I then cleaned the element (I use ROR optical cleaner, but 99% isopropyl alcohol is a great lens cleaner. 99%, not the 80% grocery store stuff which has oils and additives). I can never get the last swirly marks off, so I use a pristine, clean microfiber cloth for a final polish. (By the way, Kim Wipes are an awesome thing to have handy for cleaning lenses and negatives). And use a rubber blower every step of the way, while the lens is open go ahead and get all the dust out.

When you finish cleaning and reassemble, cheap cotton gloves are really a big help - it's easy to get 90% done and spot a big fingerprint on some glass and have to take it back apart. I wear these when I sleeve negatives, spot prints, and frame and matte prints too, another must-have in my opinion.

You can disassemble a lens pretty completely, and if you start seeing lots of parts to remove, take lots of photos, draw a diagram, etc. I save all those tiny clear bags that parts and things come in, and put screws and parts from each step in them - tape them to a sheet of paper and label the paper, like, "step 3, lens group set screws" and make notes and sketches (that way you can reuse the bags).

Good luck, do a little research and take it slow - hope your fungus is an easy spot!

Microfiber cloth and a bottle of Residual Oil Remover to wipe off the fingerprints that rapidly accumulate.

The spray I heard about and bought a few years ago was called "ROR: Residual Oil Remover", and it's for photographers. Worked pretty well on my Macbook.

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