Archived posting to the Leica Users Group, 2009/04/15

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Subject: [Leica] 28 Summicron and IR hotspot... on film
From: tgray at 125px.com (Tim Gray)
Date: Wed, 15 Apr 2009 11:10:17 -0400
References: <8f5413a60904150646i1450cd36ne150958ccf03f8c9@mail.gmail.com> <A7A3075D-6EA4-4C72-A2DF-24844952D130@mac.com>

I've just never read of it happening with film.  Something to do with
the sensor being more reflective to IR, etc.  I don't know.  Haha.  I
wonder how my CV 28/3.5 will fare, though getting an IR filter in 39mm
looks to be an expensive proposition.

On Wed, Apr 15, 2009 at 11:07 AM, George Lottermoser <imagist3 at mac.com> 
wrote:
> The 28 summicron certainly delivers the hot spot with the M8;
> I'd assume that it would also do so on film.
> Film is not protected from the IR/lens phenomenon.
> You'll find a lot information on the net regarding hot spot lenses and 
> film.
>
> Regards,
> George Lottermoser
> george at imagist.com
> http://www.imagist.com
> http://www.imagist.com/blog
> http://www.linkedin.com/in/imagist
>
> On Apr 15, 2009, at 8:46 AM, Tim Gray wrote:
>
>> So I shot some HIE the other week, and to my surprise, a lot of the
>> frames have an IR hotspot in the middle of the frame. I've heard this
>> happens with digital and some lenses, but had never heard of it
>> happening with film. ?I was using my 28 Summicron with an R72 filter.
>> ?Anybody else have this occur while shooting film?
>>
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>
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In reply to: Message from tgray at protozoic.com (Tim Gray) ([Leica] 28 Summicron and IR hotspot... on film)
Message from imagist3 at mac.com (George Lottermoser) ([Leica] 28 Summicron and IR hotspot... on film)