Hehe, you guys are funny. Still on this. And about half of us (myself included) had this exact same discussion about 2 or 3 years ago. It went for about 15 or 20 pages as well and covered all the same points. Just saying.
On the coatings being tough as hell remark, I can vouch for that. Some pre-70\'s lenses do actually have softish rub-off-able coatings tho. Newer ones need to be hit with a high-speed buffing wheel with polishing compound for a good 3 to 5 minutes with quite a lot of force exerted before the coating is gone enough to see the underlaying glass. This 3-5 minutes actually takes about 20min altogether or the elements heats and cracks. This is true of probably all front elements on all post 60\'s lenses. And yeah, I have tried it on quite a few pre and post 70\'s lens elements. Interestingly enough the coating on internal elements is much softer... or at least comes off much easier.
Hehe, you guys are funny. Still on this. And about half of us (myself included) had this exact same discussion about 2 or 3 years ago. It went for about 15 or 20 pages as well and covered all the same points. Just saying.
On the coatings being tough as hell remark, I can vouch for that. Some pre-60\'s lenses do actually have softish rub-off-able coatings tho. Newer ones need to be hit with a high-speed buffing wheel with polishing compound for a good 3 to 5 minutes with quite a lot of force exerted before the coating is gone enough to see the underlaying glass. This 3-5 minutes actually takes about 20min altogether or the elements heats and cracks. This is true of probably all front elements on all post 60\'s lenses. And yeah, I have tried it on quite a few pre and post 60\'s lens elements. Interestingly enough the coating on internal elements is much softer... or at least comes off much easier.
Mar 14, 2012 at 12:07 PM
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