Archived posting to the Leica Users Group, 2003/06/09

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Subject: Re: [Leica] Any thoughts on this flare problem?
From: Alastair Firkin <firkin@ncable.net.au>
Date: Tue, 10 Jun 2003 13:18:42 +1000

That's what I thought. It looks like the shape at f16. Any "cures"? Use 
another lens, buy the new version ;-)
On Tuesday, Jun 10, 2003, at 12:44 Australia/Melbourne, Jerry Lehrer 
wrote:

> Mike
>
> Nah!  I suspect they are images of the diaphragm.  Even though
> this is a multi coated lens, the intense light source relative to the
> canyon walls can cause this artifact.
>
> Jerry
>
> Mike Durling wrote:
>
>> Could these be from dust on the lens surface that the light is 
>> hitting?
>>   With a lens that wide they might be just out of focus.
>>
>> Mike D
>>
>> Alastair Firkin wrote:
>>> G'day all,
>>> I recently had the chance to visit Antelope canyon. I was desperate 
>>> to
>>> work on some of the flowing sandstone shapes in both colour and b/w. 
>>> The
>>> canyons are quite narrow, and to my surprise, present a major 
>>> problem of
>>> "contrast". Of course, I should have realized, but nothing beats 
>>> being
>>> there. My first images are "failures". Despite keeping the lens out 
>>> of
>>> the direct line of the light as it pours through the ceiling the 15 
>>> mm
>>> Super elmar has created a chicken pox effect with small dots of 
>>> flare --
>>> small I presume as I was using f16 or f22.
>>> Am I right in thinking this is due to the highlights bouncing around 
>>> in
>>> the lens barrel? Is there any way to avoid this flare? Is the older
>>> super elmar more prone to flare than the newer version -- not that I
>>> could afford the newer one, or the trip back to Arizona !!!!
>>>
>>> Please visit:
>>> http://stairfirkin.com/Mayimages/antelopeflare1.jpg
>>>
>>> http://stairfirkin.com/Mayimages/antelopeflare2.jpg
>>>
>>> to see my problem. Not that I can easily return to Antelope Canyon 
>>> ;-)
>>>
>>> I will be slowly posting some images of our trip, as I work on them 
>>> in
>>> the darkroom (and with the scanner).
>>>
>>> Alastair
>>>
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>>>
>>
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>
> --
> To unsubscribe, see http://mejac.palo-alto.ca.us/leica-users/unsub.html
>
>
Alastair

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Replies: Reply from Ted Grant <tedgrant@shaw.ca> (Re: [Leica] Any thoughts on this flare problem?)