Archived posting to the Leica Users Group, 2011/04/12

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Subject: [Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?
From: benedenia at gmail.com (Marty Deveney)
Date: Wed, 13 Apr 2011 14:29:17 +0930
References: <747098.9554.qm@web82101.mail.mud.yahoo.com> <BD38DC430E434F79B63832050B44DA53@jimnichols> <BANLkTinCi_aYvnyQwfM+g=DF=yB+4gFX4Q@mail.gmail.com> <BLU0-SMTP63FFBE73F8419F8D7EEA128CA80@phx.gbl> <476BA3A4-0AC3-4E8C-8B55-B586467EEF9B@btinternet.com> <91AB7555-0351-45BB-A8F2-1D7FF81A9F0E@gmail.com> <BANLkTinD4VJng6GG1zjuxgh=wLM-y2bUOQ@mail.gmail.com> <CFAB8639-36A3-4B59-B4BB-9627B9A815DA@gmail.com> <BANLkTinFC0W-1uXEKNjWijjoYGd6YqfctQ@mail.gmail.com>

True Richard.  At a given distance (and out to about 1.1-1.2x that
distance) the Nocti is easier to focus than the Summilux 75.

Marty

On Wed, Apr 13, 2011 at 1:51 PM, Richard Man <richard at imagecraft.com> 
wrote:
> That's not the entire story. It also depends on the distance to subject.
>
> On Tue, Apr 12, 2011 at 3:15 PM, Lluis Ripoll
> <lluisripollquerol at gmail.com>wrote:
>
>> Wow!
>>
>> Thanks Marty...., maybe it would be better never know this ...
>>
>> cheers
>> Lluis
>>
>>
>> El 13/04/2011, a las 0:02, Marty Deveney escribi?:
>>
>>
>> ?Yes, Lluis - the Nocti is definitely easier to focus than the Summilux 
>> 75.
>>>
>>> Marty
>>>
>>> On Wed, Apr 13, 2011 at 6:53 AM, Lluis Ripoll
>>> <lluisripollquerol at gmail.com> wrote:
>>>
>>>> Really Frank?
>>>>
>>>> A Summilux 75 is more difficult to focus than a Nocti (both wide open) ?
>>>>
>>>> I've never tried a Nocti, I love the fine focusing of pictures I've saw
>>>> from
>>>> Steve, Rei and others, as well the creamy effect, and I usually 
>>>> discarded
>>>> it
>>>> from my thaughts thinking that it would be very difficult to focus, I 
>>>> use
>>>> the Lux 75, it is not easy properly focus at 1.4 but not impossible.
>>>>
>>>> Saludos
>>>> Lluis
>>>>
>>>>
>>>> El 11/04/2011, a las 14:35, Frank Dernie escribi?:
>>>>
>>>>
>>>>> On 11 Apr, 2011, at 12:41, Vick Ko wrote:
>>>>>
>>>>> ?Hello
>>>>>>
>>>>>> I've been playing with my DMR with the 80mm f1.4.
>>>>>>
>>>>>> I'm finding it a lot more difficult to use and capture proper focus at
>>>>>> f1.4 than I expected.
>>>>>>
>>>>>> Is the dof of an 80mm at f1.4 thinner than the dof of a 50mm at f1.4?
>>>>>>
>>>>>
>>>>> Yes, noticeably.
>>>>>
>>>>>
>>>>>> And is this typical of what people found, using their rf 75mm
>>>>>> Summiluxes
>>>>>> - very difficult to capture proper focus?
>>>>>>
>>>>>
>>>>> More difficult than a Noctilux, but not impossible.
>>>>>
>>>>>
>>>>>> I suppose it didn't help, trying to photograph a 7 month old boy, who
>>>>>> doesn't quite understand sitting still yet ? :-)
>>>>>>
>>>>>
>>>>> Fast lenses wide open with children is a 1 in 50 strategy...
>>>>>
>>>>>
>>>>>> Vick
>>>>>>
>>>>>> _______________________________________________
>>>>>> Leica Users Group.
>>>>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>>>>
>>>>>
>>>>> Frank
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> 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
>>
>
>
>
> --
> // richard <http://www.imagecraft.com/>
> // icc blog: <http://imagecraft.com/blog/>
> // photo blog: <http://www.5pmlight.com>
> [ For technical support on ImageCraft products, please include all previous
> replies in your msgs. ]
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>


In reply to: Message from rgacpa at yahoo.com (Bob Adler) ([Leica] IMG: Foothill Park)
Message from jhnichols at lighttube.net (Jim Nichols) ([Leica] IMG: Foothill Park)
Message from richard at imagecraft.com (Richard Man) ([Leica] IMG: Foothill Park)
Message from vick.ko at sympatico.ca (Vick Ko) ([Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?)
Message from Frank.Dernie at btinternet.com (Frank Dernie) ([Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?)
Message from lluisripollquerol at gmail.com (Lluis Ripoll) ([Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?)
Message from benedenia at gmail.com (Marty Deveney) ([Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?)
Message from lluisripollquerol at gmail.com (Lluis Ripoll) ([Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?)
Message from richard at imagecraft.com (Richard Man) ([Leica] DOF of 80/1.4 at 1.4 slimmer than 50mm at 1.4?)