Archived posting to the Leica Users Group, 2008/05/31

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Subject: [Leica] Auto HDR -- is nobody paying attention?
From: simon.apekop at gmail.com (simon jessurun)
Date: Sat May 31 05:22:02 2008
References: <20080424234459.ZTHG13948.eastrmmtao102.cox.net@eastrmimpo01.cox.net> <B12B7A69-F74B-47CF-8B52-02338F9A7A53@mac.com>

I,ll give it a try with my canon.
Have not used bracketing before and thge thing offers many choices one can
bracket exposure time or aperture ,iso and even white balance.With a big
lens and high iso's outside it shoulbe possible to bracket moving people at
1/8000 th
thx for the idea
simon

On Sat, May 31, 2008 at 1:31 AM, Lottermoser George <imagist3@mac.com>
wrote:

> I believe I've mentioned this before
> but I'll say it again
> you're using HDR to achieve
> wonderful, natural rendering of "reality"
> I honor your
> admirable craftsmanship
>
> Fond regards,
> George
> george@imagist.com
> www.imagist.com
> http://www.imagist.com/blog
> Picture A Week - www.imagist.com/paw_07
>
>
>
> On Apr 24, 2008, at 6:45 PM, Ken Carney wrote:
>
> I can usually get an HDR image with a three-shot auto bracket burst, even
>> hand-held if I don't have or want the tripod -- assuming nothing is moving
>> in the scene, of course.  Sometimes I can improve an image by opening the
>> single raw file at, say, -1, 0 and +1 EV and blending.  Photomatix Pro is
>> good for this, if used with a light touch.
>>
>> Here is one made from a single raw file in Photomatix:
>>
>> http://gallery.leica-users.org/v/kcarney/mcloud.jpg.html
>>
>> And one made from three files, hand-held:
>>
>> http://gallery.leica-users.org/v/kcarney/mosque.jpg.html
>>
>> Kyle's idea sounds easier.
>>
>> Ken
>>
>> -----Original Message-----
>>> From: lug-bounces+kcarney1=cox.net@leica-users.org [mailto:lug-
>>> bounces+kcarney1=cox.net@leica-users.org] On Behalf Of Henning Wulff
>>> Sent: Thursday, April 24, 2008 3:00 PM
>>> To: Leica Users Group
>>> Subject: RE: [Leica] Auto HDR -- is nobody paying attention?
>>>
>>> At 12:32 PM -0400 4/24/08, wildlightphoto@earthlink.net wrote:
>>>
>>>> Kyle Cassidy <kcassidy@asc.upenn.edu> wrote:
>>>>
>>>>  Light comes through the lens, hits the sensor. As soon as values reach
>>>>>  254 the camera should save a file at that exposure which can then be
>>>>>  merged (if necessary) with the master file so that burned highlights
>>>>>
>>>> can
>>>
>>>>  be salvaged.
>>>>>
>>>>
>>>> Or with 16-bit pixels, 65534 instead of 254.
>>>>
>>>
>>>
>>>
>>> The limiting factor is dynamic range, not number of bits. The Fuji S5
>>> addresses that to a limited degree, but not to HDR standards.
>>>
>>> With present sensors and photon acquisition methods it's hard to get
>>> real time greater dynamic range. One possibility might be to actually
>>> do two exposures during the nominal exposure time. Exposure time
>>> would then take on a new meaning, and this clearly wouldn't work when
>>> you need an extremely short exposure, but it should be doable when
>>> you only need 1/125sec.
>>>
>>>
>>> --
>>>    *            Henning J. Wulff
>>>   /|\      Wulff Photography & Design
>>>  /###\   mailto:henningw@archiphoto.com
>>>  |[ ]|     http://www.archiphoto.com
>>>
>>> _______________________________________________
>>> 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
>

In reply to: Message from kcarney1 at cox.net (Ken Carney) ([Leica] Auto HDR -- is nobody paying attention?)
Message from imagist3 at mac.com (Lottermoser George) ([Leica] Auto HDR -- is nobody paying attention?)