JPNola
Veteran
Thanks, good info. I think dust on the sensor is the greater threat...
Yes, without a doubt.
I completely forgot when replying earlier- I have a Canon 24-70mm f/2.8 that I trashed by aggressively cleaning the lens when there was something on the front element. The coating is worn off in the center of the lens and as a result it blooms ( veils? ) like crazy when shooting towards any light. I bought a replacement Canon 24-70, the damaged one has been sitting on a bookshelf because I have yet to look into having the front element replaced. In looking to learn what the repair might cost, I came across the following, the quote, and the argument it produced, might be interesting to you as it pertains to dust / scratches on lenses:
“ I don't really understand what the big deal is about a tiny scratch on the front element. It makes almost ZERO difference in IQ, and as long as you aren't planning on changing systems, it seems ludicrous to get bent out of shape over something that has no real consequence. Spending all that money over a tiny front element scratch... wow. If it was the rear element, I could fully understand.
Perhaps you are a bit over obsessive about things? It's not like you are just putting this in a case for a museum or something. This is an item that's MEANT to be used, and scratches happen. Nearly all my lenses have tiny imperfections on the front element, whether it be a bit of internal dust, tiny scratches, etc., but this doesn't bother me at all, as it makes NO DIFFERENCE in my day to day use.”
https://www.dpreview.com/forums/thread/4150778
fyi- I started out gentle in trying to get rid of the spot on that lens. Micro-fiber cloth, then Rosco lens tissue w/ Panchro fluid. It was resorting to using Kim Wipes that did the damage to the coating. I knew Kim Wipes are not intended for lens elements and have abrasive texture, but stupidly used them anyway and did so aggressively. I would not have done so were it an expensive lens. More expensive, that is. It was “just” a still photo lens. And they suck. :grin:
