[pure-silver] Re: Mamiya Macro

Alan,
Go to photo.net, there's a community MF forum devoted to Mamiya 645, you're bound to find the answer there, either in the forum or by asking the very knowledgeable & helpful members. 

Adrienne Moumin

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From: ATIPPETT@xxxxxxx
Date: Tue, 24 Jul 2007 01:51:06 EDT
Subject: [pure-silver] Mamiya Macro

I purchased a second hand 80mm 1:4 Mamiya Macro lens for my 645.   Which I
intend to use both with and without extension tubes.


-----SNIPPAGE-----


Could some one point me to more information on the usage of this  lens?

Thank you
Alan Tippett, San Jose
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From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
Subject: [pure-silver] Re: Durst L1200 (condensor) & uneven illumination
Date: Mon, 23 Jul 2007 23:26:44 -0700


----- Original Message -----
From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx>
To: <pure-silver@xxxxxxxxxxxxx>
Sent: Monday, July 23, 2007 12:03 PM
Subject: [pure-silver] Re: Durst L1200 (condensor) & uneven
illumination


>
> ----- Original Message -----
> From: "Martin Jangowski" <martin@xxxxxxxxxxxx>
> To: <pure-silver@xxxxxxxxxxxxx>
> Sent: Monday, July 23, 2007 4:24 AM
> Subject: [pure-silver] Re: Durst L1200 (condensor) &
> uneven illumination
>
>
>> distortionless projection and a normal pupil is fall off
>> =
> cos^theta where theta is the half-angle, i.e., angular

    Should be cos^4 theta where theta is the half-angle.

---
Richard Knoppow
Los Angeles, CA, USA
dickburk@xxxxxxxxxxxxx


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End of pure-silver Digest V4 #176
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