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
> 
> 

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