Archived posting to the
Leica Users Group, 2015/11/29
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Subject: [Leica] George: M8 IR Different filters
From: george.imagist at icloud.com (George Lottermoser)
Date: Sun, 29 Nov 2015 21:22:41 -0600
References: <7241DB04-AA36-4A8E-81DC-3D1A0E48E8D0@verizon.net> <BB64C49C-3B2B-4268-A296-2039C342FCB8@icloud.com> <8EA190DF-BE52-43D8-92D3-F802755F88A4@verizon.net> <44284AD1-06B7-4942-8394-4FAF79872EC4@icloud.com> <CAJ3Pgh5VJwNKg2GqsFVwaZeXBOXQ+A2C4qmJcAgrQSNdGmizOw@mail.gmail.com>
On Nov 29, 2015, at 9:15 PM, Paul Roark wrote:
> Interestingly, George, I'm interested in replicating the M8's spectral
> response with the Sony a7r by using the Kolori astrophotography cover
> glass. It's a close match to my favorite B&W film -- Technical Pan.
>
> Did you ever have occasion to see a graph of the M8's spectral response?
No. I haven't Paul. Have you?
All I know is that the sensor exhibits enough IR sensitivity
to have it significantly effect the image;
when lenses are used without the IR/UV cut off filters.
(and Frank, I also would not wish to lose the micro lenses on the existing
cover glass)
Regards,
George Lottermoser
http://www.imagist.com
http://www.imagist.com/blog
http://www.linkedin.com/in/imagist
Replies:
Reply from red735i at verizon.net (Frank Verizon) ([Leica] George: M8 IR Different filters)
In reply to:
Message from red735i at verizon.net (Frank Verizon) ([Leica] George: M8 IR Different filters)
Message from george.imagist at icloud.com (George Lottermoser) ([Leica] George: M8 IR Different filters)
Message from red735i at verizon.net (Frank Verizon) ([Leica] George: M8 IR Different filters)
Message from george.imagist at icloud.com (George Lottermoser) ([Leica] George: M8 IR Different filters)
Message from roark.paul at gmail.com (Paul Roark) ([Leica] George: M8 IR Different filters)