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[OM] Re: Yellowed 24mm f/2.0 MC

Subject: [OM] Re: Yellowed 24mm f/2.0 MC
From: Moose <olymoose@xxxxxxxxx>
Date: Sat, 04 Oct 2008 14:57:17 -0700
John Hermanson wrote:
> First time I've heard of any 50 1.4 being radioactive.  The 55 1.2 has been 
> discussed in detail here.
>   
I believe it was AG who said that a very few, early 50/1.4s had 
radioactive element(s).

As I recall, he said they had rather good overall performance, even at 
wider apertures.

Then he next, non-radioactive element version had similar central 
sharpness, but poorer outer regions.

And the next version had better overall balance of sharpness across the 
frame, but lost some in the center.

A Dimly Recalling Moose

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