Re: [Leica] Re: UV filter and 21mm ASPH lens - do they fit together?

[Ted Grant <tedgrant@home.com>]

> At 09:42 PM 7/12/00 -0400, Vick Ko wrote:
> >Does anyone out there shoot with a Leitz UV filter on the 21mm ASPH lens?
> >
> >I'm from the school of "scratched or dirty filter is cheaper than
> >scratched or dirty front element".<<<<<<<<<<<<<<<

Jim Brick responded admirably!:
> Good grief no!   Your school is about 40 years out of date!!!<<<<<<<<<<<<<
 SNIP!

Hi Vic,
How do you scratch a filter let alone the lens? Sure we all get dust and
grung on the lens glass but what the heck that goes with taking the
camera out of the bag and using it, isn't that what we're supposed to
do? So what's a little dust between the lens and the world being
photographed. Besides we're talking Leica hard coating lenses, not pop
bottle soft glass.

Accidents happen, but generally if you're working with one camera around
your neck it's not likely it'll ever be in a situation where the lens
could be scratched.  Hell I discovered the other day I have some kind of
tiny zit mark smack dab in the middle of my R 15 mm lens, ticked me off.
But I didn't go into any kind of hissy fit, what the heck would that do.
  Basically it's so what, it doesn't show on any images and simply comes
down to an "OOPS!" moment some  where along the shooting road.

Jim has pointed out why you shouldn't put a filter on the lens unless
they are required for effect, pictures taken get it off!   Why spend the
money for a superb lens then stick a $39.95 piece of glass on the front?

ted

> Doesn't anybody understand the simple part of the optical physics of
> light/glass/lens design?
> 
> I mean the obvious, hit you in the face, pretty hard to ignore, potential
> problems with the use of ANY filter.
> 
> And you are thinking of sticking one on your lens and leaving it there?
> 
> Filters are great when used in appropriate conditions and appropriate
> places AND when they can ENHANCE the photograph.
> 
> But go right ahead. Makes no difference to me if you want your beautiful 21
> ASPH to always peer through a windshield.
> 
> Ever drive down the road and get glare on your windshield from bright
> lights or the sun?
> 
> Since there isn't a filter in existence that has the very expensive and
> rigorously calculated flare suppressing coating that your raw lens has.
> What do you suppose happens when you point your camera toward bright
> lights, high contrast, or the sun skips past the shade and catches part of
> the always present "filter" ???
> 
> FLARE!
> 
> But hey... you do what you want. I really could care less. So why am I
> writing this? Well, it's in my genes. Or is it jeans? Who knows. The words
> just come out without me doing anything.
> 
> Anyway... happy UV filtering. May you keep your back to the sun.
> 
> Jim