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

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Subject: [Leica] 28 Summicron and IR hotspot... on film
From: imagist3 at mac.com (George Lottermoser)
Date: Wed, 15 Apr 2009 20:25:41 -0500
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> <8f5413a60904151622w29b3a7ffxce94df56cd4c0177@mail.gmail.com>

when i read 40 x $40
I had a similar thought
;~)

but hey
you'll have the negatives
and
hundreds of hours
of scanning

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 6:22 PM, Tim Gray wrote:

> 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.
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>>>> information
>>>>
>>>
>>> _______________________________________________
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>>
>>
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>>
>
> _______________________________________________
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Replies: Reply from tgray at 125px.com (Tim Gray) ([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)
Message from tgray at 125px.com (Tim Gray) ([Leica] 28 Summicron and IR hotspot... on film)