Re: [Leica] Lens Not sharp @ f16

[John Collier <jbcollier@powersurfr.com>]

Have you tried cleaning the lens?

I used to be a purist and nothing touched my lenses from new. Caps and
filters were put on right away and that was that. I had a 28/3.5 Nikkor from
new that I was never happy with. It also had a small mark on the rear
element that would not come off with moist breath light rubbing. Finally as
I was selling off the last of my Nikon gear I gave it a full cleaning with
lens cleaning fluid, etc. The rear element was now clear and pristine!

I also purchased a Leica lens somewhat inexpensively as it had a mark on the
front coating. Again the usual moist breath and what not did nothing. After
a good cleaning the lens is again clear and pristine.

John Collier

> From: "Edward Mortimer" <munkfishy2k@hotmail.com>
> 
> 
> Actually now ive taken a good look at the rear lens element I can see what
> before looked like a few dust spots, are actually tiny marks in the lens.
> They look like spot etchings, not scatches, but actual marks in the glass.
> Or are these marks in the coating on the lens. I can only really see them
> when looking through a back to front lens as a powerful magnifing glass.
> There are about 4-5 of these nicks on the rear element, how they got there
> hell knows. But maybe they only affect picture quality enough to see the
> difference when shooting with a small aperature. Can these marks be removed,
> ie @ Leica. Has anyone else had scatches/marks repaired, I presume it must
> be possible.
>