[Leica] Monday Misc.

[imra at iol.ie (Douglas Barry)]

That's very good performance, Don. The dog is very sharp, but not being 
a fan of long ladders after a fright when I was younger, there's a 
twitch quality to "Extension" which easily overcomes the lack of sharpness.
Douglas

On 04/12/2023 11:00, Don Dory via LUG wrote:
> Greetings to all.  Last week we had some discussion about using vintage
> lenses on our digital cameras.  This week I took a walk around the
> neighborhood with a prewar 35mm Zeiss Biogon originally in a Contax mount.
> I did have the lens CLA'd by Harry Scherer maybe 15 years ago while also
> overhauling a Contax II.
>
> First is an example of only OK performance at infinity:
>
> http://gallery.leica-users.org/v/don_dory_gmail_com/Monday+Misc/extension.jpg.html
>
> Next is a close image at f2.8:
>
> http://gallery.leica-users.org/v/don_dory_gmail_com/Monday+Misc/got+treats.jpg.html
>
> Last is an intermediate distance image, this time at f5.6:
>
> http://gallery.leica-users.org/v/don_dory_gmail_com/Monday+Misc/turkey+legs+added+to+extend+the+holiday.jpg.html
>
> If you recall this is the lens whose rear element protrudes so far rearward
> that it is unusable on the postwar Contax line.  There is possibly three
> stops of falloff in the edges on my R V sensor but overall is a fair
> performer and an excellent performer considering no coatings and 86+ years
> old.
>
> All the best.
>
>