My Canon 28mm F1.8 focus ring rubber has turned sticky. Where is the best place to order a replacement in the US? I think the part number is ya2-2235-0000.
Do they just roll on or is there an adhesive?
Do they just roll on or is there an adhesive?
Lots of people do it themselves, its easy and just takes a minute. I've removed and reinstalled the bands many times when I needed to open up a lens to clean it. My Sigma 600mm mirror lens has a band about 4 inches wide, that takes more time and effort to get on and off.Awesome. I guess I'll try Canon directly. (or try and find someone else who'll sell me just the ring)
Midwest wants me to send the lens back for them to put it on for $130. I'd rather buy and install it, it's just a fancy rubber band. I don't blame Midwest for having a minimum price for handling it, but I don't need that much hand holding...
My Canon 28mm F1.8 focus ring rubber has turned sticky. Where is the best place to order a replacement in the US? I think the part number is ya2-2235-0000.
Do they just roll on or is there an adhesive?
FYI: For anyone trying this - you have to disassemble part of the lens!
For this lens, it does NOT take just a minute.
The original ring was rubber coated hard plastic. This coating has turned sticky. The new replacement omits the coating (yay!).
It might be that it could be removed if you could use a cleaner that doesn't get in the lens, or if you pull the ring and clean it separately to be safe.
Replacing it required removing the lens mount and circuit board, 3 flat flex connectors from to get those out, then the middle lens barrel section. The optics section didn't need to be touched. There is a small metal ring that needs to be moved to the new focus ring. You'll need a couple of small screw drivers and tweezers to get the job done. It takes about 45 minutes if you're slow and keep referring to the one youtube video on the lens. Delicate but not hard work. I spent the most time searching through my small Phillips(- and like) screw drivers to find good matches as the screws are small but firmly seated and I didn't want to strip any. I suspect at least the mount screws may be one of the cross type heads that aren't actually phillips, but I had a driver in my collection that exactly matched.
That happens occasionally to users, but on 3 lenses?? Something is happening, are you cleaning your lenses with something, or perhaps they are near a chemical. It sounds like there is a issue of something softening the rubber involved. They are older lenses, so there may have been something at low concentration working on them for years. Don't apply any chemicals to the lens that disolves the rubber, it may get inside the lens and dissolve other plastics like wire insulation. I hope not. Tale the ring off and clean it away from the lens, If I were not replacing the ring, I'd consider wrapping it with self adhering silicone tape. No adhesive is involved. I've used it when the 12 or so rubber grips on my Benro tripod all suddenly fell off and they claimed that there were no replacements. It does not provide the same grip, but it does work and has a wide temperature range.Two other lenses have developed the same problem, a 28-135mm and a 70-300 IS. Like the 28mm they have a hard plastic focus ring with a rubber coating. That coating turns to goo.
I found that Krud Cutter cuts the goo wonderfully. Spray some in a bottle cap then use q-tips and you can clean the goo off if you're very careful and take your time. Keep wiping off with a paper towel, and change the q-tips often as they'll load up with rubber goo fast.
That happens occasionally to users, but on 3 lenses?? Something is happening, are you cleaning your lenses with something, or perhaps they are near a chemical. It sounds like there is a issue of something softening the rubber involved. They are older lenses, so there may have been something at low concentration working on them for years. Don't apply any chemicals to the lens that disolves the rubber, it may get inside the lens and dissolve other plastics like wire insulation. I hope not. Tale the ring off and clean it away from the lens, If I were not replacing the ring, I'd consider wrapping it with self adhering silicone tape. No adhesive is involved. I've used it when the 12 or so rubber grips on my Benro tripod all suddenly fell off and they claimed that there were no replacements. It does not provide the same grip, but it does work and has a wide temperature range.
It is used to cover electrical splices on fueled aircraft where heat shrink is too dangerous due to a potential fire.
https://www.amazon.com/X-Treme-Tape...lf+fusing+silicone+tape&qid=1548181031&sr=8-3
I believe some lenses were recalled due to improper coatings a few years back, the runner was oxidizing to white. It was blamed on a subcontractor who mixed the formulation improperly. Those were the bands. I have lots of old Minolta cameras and lenses that long ago turned white. I used a toothbrush and elbow grease to get the oxidation off. I think its stayed off.