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 19:22:46 -0400
References: <8f5413a60904150646i1450cd36ne150958ccf03f8c9@mail.gmail.com> <A44964CD-81D7-490F-861A-927B4BE40D99@verizon.net> <D7ECA676-6A7A-41F2-A07B-CC7257935EBB@charter.net> <8f5413a60904151500r1f54154fof925a14ec707a5da@mail.gmail.com> <BDA8A5DD-4F9C-4AF4-8F24-AEBAD9CE977B@mac.com> <8f5413a60904151543p2c3a084fj981b57e3275c44af@mail.gmail.com> <AE83B628-44AE-40AB-98E9-E7B9E1CC6365@mac.com>

I don't know about good sense.  If I was smart I'd flip it all on Ebay
for $2k, buy a used M8, and shoot IR to my heart's content.  But that
makes too much sense. :D

On Wed, Apr 15, 2009 at 7:15 PM, George Lottermoser <imagist3 at mac.com> 
wrote:
> got it
> makes good sense
>
> 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 5:43 PM, Tim Gray wrote:
>
>> I guess I could. ?But then I though, "If I'm going to shoot ~40 rolls
>> of film that is going for ~$40/roll on ebay, why not spend the extra
>> $40 and just buy a 39mm IR filter?" ?The real reason is because the CV
>> 28/3.5 with filter and hood doesn't obstruct the viewfinder, but with
>> a step up ring and filter, it would, and I wouldn't be able to use the
>> hood.
>>
>> I also have a 90 that takes 39mm filters, so with two sets of filters,
>> all my lenses are covered.
>>
>> On Wed, Apr 15, 2009 at 6:04 PM, George Lottermoser <imagist3 at mac.com>
>> wrote:
>>>
>>> why not just get a step-up ring?
>>>
>>> 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 5:00 PM, Tim Gray wrote:
>>>
>>>> Hmm. ?That's interesting. ?I've seen very little about hotspots on IR
>>>> film, but I guess it does happen. ?Oh well. ?Time to look for a 39mm
>>>> IR filter - I'll just shoot with the CV 28/3.5, which had better NOT
>>>> have a hotspot :)
>>>>
>>>> Not that it's that interesting to most since they no long make HIE,
>>>> but I'll going to run a test soon with the lenses I have to see which
>>>> leave a hotspot on film, at what apertures. ?I'll also try to get a
>>>> handle on the focus shift...
>>>>
>>>> On Wed, Apr 15, 2009 at 4:54 PM, Slobodan Dimitrov
>>>> <s.dimitrov at charter.net> wrote:
>>>>>
>>>>> I've also had a hot spot with a 35mm.
>>>>> S.d.
>>>>>
>>>>> On Apr 15, 2009, at 1:29 PM, Leonard Taupier wrote:
>>>>>
>>>>>> Tim,
>>>>>>
>>>>>> The 28mm Summicron is known to give hotspots when shooting IR, film or
>>>>>> digital.
>>>>>>
>>>>>> Len
>>>>>>
>>>>>>
>>>>>> On Apr 15, 2009, at 9:46 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?
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Leica Users Group.
>>>>>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Leica Users Group.
>>>>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Leica Users Group.
>>>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>>>
>>>>
>>>> _______________________________________________
>>>> Leica Users Group.
>>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>
>>>
>>> _______________________________________________
>>> Leica Users Group.
>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>
>>
>> _______________________________________________
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>> See http://leica-users.org/mailman/listinfo/lug for more information
>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>


Replies: Reply from imagist3 at mac.com (George Lottermoser) ([Leica] 28 Summicron and IR hotspot... on film)
In reply to: Message from tgray at protozoic.com (Tim Gray) ([Leica] 28 Summicron and IR hotspot... on film)
Message from len-001 at verizon.net (Leonard Taupier) ([Leica] 28 Summicron and IR hotspot... on film)
Message from s.dimitrov at charter.net (Slobodan Dimitrov) ([Leica] 28 Summicron and IR hotspot... on film)
Message from tgray at 125px.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)
Message from tgray at 125px.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)