Archived posting to the Leica Users Group, 2006/06/11

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Subject: [Leica] Just back from India, question about burning hole in shutter
From: ricc at mindspring.com (Ric Carter)
Date: Sun Jun 11 15:54:18 2006
References: <000c01c68d41$73a9b410$c310822f@corp.nortel.com> <448C12F3.2000908@waltjohnson.com> <FBE07261-CFAE-460D-BF66-EA7B37E98013@pandora.be> <7EB5E535-0F23-4395-BE5F-4CF5D7A95709@mindspring.com> <0e70a79684a6b0cbc9fb6b156c3c38ff@mindspring.com>

I don't know about that, but I heard of one burning a nasty hole in a  
pressure plate and welding it to the flip up back;^) Not a problem  
concerning us poor folk.

Ric


On Jun 11, 2006, at 5:55 PM, Craig Zeni wrote:

> A nocti might be able to fire off nuclear fusion ...
>
> :)
>
> On Jun 11, 2006, at 9:56 AM, Ric Carter wrote:
>
>> Because f2 lets in 32 times more light than f16!
>>
>> Ric Carter
>> http://gallery.leica-users.org/Passing-Fancies
>>
>> On Jun 11, 2006, at 9:18 AM, Philippe Orlent wrote:
>>
>>> Damn Walt, you got me thinking and testing.
>>> Took a Summarit and burned within 1 sec a hole in a newspaper  
>>> page at f 1.5.
>>> The distance was about the one to focal plane.
>>> Did it again at f 16. A smaller circle on the newspapern but no  
>>> burning even at 10 secs.
>>> I also think I know why. Do you?
>>> ;-)
>>>
>>>
>>> Op 11-jun-06, om 14:56 heeft Walt Johnson het volgende geschreven:
>>>
>>>> Vick
>>>>
>>>> Simply take the lens off and outside to find the solution to  
>>>> your question. Focus the sun on your arm  stopped down and wide  
>>>> open and prove to yourself which is more likely to burn the  
>>>> shutter curtain.
>>>>
>>>> Walt
>>>>
>>>> Vick Ko wrote:
>>>>
>>>>> I am just back from a very interesting trip to Bangalore (too  
>>>>> few days, but
>>>>> in a way, just enough days).  Interesting to see the thread on the
>>>>> temples...hmm.
>>>>>
>>>>> I was visiting my workteam, and a bit of sightseeing.  The  
>>>>> camera on my trip
>>>>> was a Leica CL.
>>>>>
>>>>> One question, on one day, my workteam took me out to  play  
>>>>> cricket and when
>>>>> it was "team photo" time, one of the guys took our cameras  
>>>>> (there were 2 of
>>>>> us), stood back and took our photos.  My camera was at f16, and  
>>>>> I noticed
>>>>> that he put it face up on the ground.
>>>>> I had thoughts of horror as I worried about the sun burning a  
>>>>> hole into the
>>>>> shutter.  I did notice that he wound the film on, so I think at  
>>>>> least there
>>>>> was a chance of the sun, coming in at f16, hitting the meter.
>>>>>
>>>>> So my LUG questions:
>>>>>
>>>>> 1. can the sun at f16 burn a hole?  I'm not wanting to try the  
>>>>> experiment
>>>>>
>>>>> 2.  can the sun at f16 hurt my CL meter?  It seems fine.  I  
>>>>> suspect the sun
>>>>> is not at its focal point for the meter face
>>>>>
>>>>> I did notice a discoloured patch that is off to the edge of the  
>>>>> shutter, 1/4
>>>>> of the way to the edge.  It doesn't look like the sun "melted"  
>>>>> the rubber
>>>>> there, maybe it was there always.
>>>>>
>>>>> Thanks in advance.
>>>>>
>>>>> Regards,
>>>>>
>>>>> Vick Ko
>>>>>
>>>>> ------------------------------------------------------------------ 
>>>>> ------
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Leica Users Group.
>>>>> See http://leica-users.org/mailman/listinfo/lug for more  
>>>>> information
>>>>>
>>>>
>>>> _______________________________________________
>>>> Leica Users Group.
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>>>> information
>>>>
>>>
>>>
>>> _______________________________________________
>>> Leica Users Group.
>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>
>> _______________________________________________
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>>
>
>
> _______________________________________________
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In reply to: Message from vick.ko at sympatico.ca (Vick Ko) ([Leica] Just back from India, question about burning hole in shutter)
Message from walt at waltjohnson.com (Walt Johnson) ([Leica] Just back from India, question about burning hole in shutter)
Message from philippe.orlent at pandora.be (Philippe Orlent) ([Leica] Just back from India, question about burning hole in shutter)
Message from ricc at mindspring.com (Ric Carter) ([Leica] Just back from India, question about burning hole in shutter)
Message from clzeni at mindspring.com (Craig Zeni) ([Leica] Just back from India, question about burning hole in shutter)