I think I have mentioned on the list several times in the past that you can never tell what has been done to a used lens. You article makes that point with far more precision.

--

Don Sanderson wrote:
You guys really had me going wondering what all the fuss was about
regarding the M100/2.8.
Mine didn't seem even just "mediocre" and I rather lamented the
$78 I paid for it.
Hearing people pay 150,175,and over 400 dollars just amazed me.

Decided I better take a closer look at mine and see what was up.
I noticed that there were faint marks on the rear retaining ring
like it had been tightened....... or maybe removed?
OK, so I removed the elements, cleaned them and compared them to
the lens element diagram on Bojidar's K-Mount page:
http://kmp.bdimitrov.de/lenses/primes/_optics/100f2.8.gif

The rearmost element, which has just a slightly different
curvature on the front than the back...... was reversed!
I'm surprised the lens focused as well as it did.
(Which really wasn't very good.)

Now I see what the fuss was about.
Here's a quick shot of "Beauregard the Benevolent Basset"
at 5.6 with the lens put together properly:

http://www.donsauction.com/PDML/M100fixed.jpg

Just a quickie JPEG with the on camera flash but what a
difference.

Much Better!
Thanks for getting me curious.

Don






-----Original Message-----
From: Fred [mailto:[EMAIL PROTECTED]
Sent: Sunday, October 31, 2004 2:02 PM
To: Jens Bladt
Subject: Re: KEH M100/2.8



The SMC K 2.8/105mm has better resolving power than both the 85mm
and 100mm.

My experience is that also (K 105/2.8, vs M 85/2 and M 100/2.8), although the 105/2.8 has (in my opinion) rather ghoulish bokeh, while the bokeh of the two M lenses is better, I think (I am sure about that for the M 85/2, but I'm admittedly relying on shakier memory for the bokeh of the M 100/2.8).

Fred






-- graywolf http://www.graywolfphoto.com Off List Replies To: [EMAIL PROTECTED]

"Idiot Proof" <==> "Expert Proof"




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