On many (most) lenses, you could take a major chunk out of the
front element and never even notice a drop in image quality.
Just my personal preference, of course - of course on days with UV
Haze, I'll use a UV filter to correct - and sometimes in bright
sunlight I'll use a CP to get the effect I want...but most times
nothing on the front.
Use a blower/brush and get the dust of the rear element. No reason
you can't clean the rear element with lens cleaner/tissue the same
way you do the front element!
Gary
Okay, so we all have UV condoms on the tips of our lenses, lest any
dangerous air touches the glass! But I've noticed this shiny and
unprotected rear element that I expose every time I change lenses.
I've got a dust spot on the back of one of my lenses, and ( for
this reason ) I won't swap them anywhere near the beach.
What do you guys do about this?