RobertLynn Offline Upload & Sell: Off
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dhphoto wrote:
I completely disagree. even smallish spots can easily degrade an image (even more so if they are on the rear element), which is why I never use filters (except in hazardous places) and always use lens hoods
The rear element is true, but the front element, no. I've had blood spatter on lenses and the photos were fine. I've been asked at presentations on combat sports photography I've given, how I clean blood. I say I use alcohol if I catch it right away, otherwise if it's a couple weeks old, just whatever I clean my lenses with normally. I was asked if I worried about (amongst other things) degradation of image quality.
I took my thumb, licked it, and put a big glob of slobber all over the front element of my lens, and began to make photographs from 2.8-8. No noticeable degradation of IQ. Maybe if we have a micrometer or some namby pamby nilly willy b/s we would notice, but seriously, the front element can be quite filthy before you notice anything wrong with it.
Scratches on the other hand are a little different as they can introduce more surfaces to flare, but in reality it's not really a big deal either.
Some discussions on the photography forums will never change. raw/jpg, filter/no filter, and how do we clean our "gears", and for that matter, gear/gears.
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