Archived posting to the Leica Users Group, 2011/11/28

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Subject: [Leica] 25 mm PannyLeica Summilux - A Few Test Pix
From: Frank.Dernie at btinternet.com (Frank Dernie)
Date: Mon, 28 Nov 2011 16:31:18 +0000
References: <D8290474-A0B2-4EB6-ADA9-AB34422B70E6@comcast.net> <E76042AB64F648EFA1C07A0EAD646F6B@qck8vqhgou8blu>

I would presume that the MFT standard applies to all license holders so an 
Olympus camera should be able to read the ROM in a Panasonic lens (where I 
assume the correction data are stored in a standardised format) just as well 
as that in an Olympus lens.
I have just checked the focussing of my 50mm macro on the Olympus pen E-P2 
using the Panasonic 4/3 to mft adapter and it autofocuses OK. I no longer 
have a 4/3 body so I can't compare AF speed.
The Panasonic GH1 doesn't autofocus those Olympus 4/3 lenses I own at all.
Frank

On 28 Nov, 2011, at 16:09, A. Lal wrote:

> 
> 
> DOes anyone know how much optical correction is done in camera by firmware 
> in the MFT system?
> 
> I assume the Panasonic body 'knows' that  a 25mm Summilux is mounted and 
> in order to enhance the captured image  will do some data manipulation, 
> even in RAW mode, before writing to the memory card. How would this affect 
> overall image quality if the lens is used on, say, an Olympus MFT body 
> where the camera may not 'know' that a Summilux is mounted?
> 
> Also are any MFT users using adapted four-thirds lenses on their MFT 
> bodies? If so  please comment on AF speed and compatibility. Olympus made 
> a very tempting 50 macro for the original FT system that has no direct 
> equivalent in the MFT system.
> 
> Regards,
> Akhil
> ----- Original Message ----- From: "Richard Taylor" <r.s.taylor at 
> comcast.net>
> To: "Leica Users Group" <lug at leica-users.org>
> Sent: Monday, November 14, 2011 4:58 PM
> Subject: [Leica] 25 mm PannyLeica Summilux - A Few Test Pix
> 
> 
>> Hello again.  I got one of the few 25mm Panasonic Summilux lenses B&H had
>> in stock last week and thought you might like to take a look at what it
>> can do.  Most of these are a full resolution so you'll be able to pixel
>> peep around the frame as much as you like.
>> 
> SNIP
>> The lens sure looks good to me.  It is sharp, contrasty, and has a least a
>> bit of that "Leica  look" about it.  There is some softness at the corners
>> but how much of that is due to curvature of the field I can't tell.  The
>> overall sharpness is excellent.  The only problem I noted was an
>> occasional inability of the lens to focus close in in some circumstances.
>> I'm not sure what was going on with that.  It may be operator error.
>> 
>> It's a keeper, in any case.
>> 
>> 
>> Regards,
>> 
>> Dick
> 
> 
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Replies: Reply from alal at poly.edu (A. Lal) ([Leica] 25 mm PannyLeica Summilux - A Few Test Pix)
In reply to: Message from r.s.taylor at comcast.net (Richard Taylor) ([Leica] 25 mm PannyLeica Summilux - A Few Test Pix)
Message from alal at poly.edu (A. Lal) ([Leica] 25 mm PannyLeica Summilux - A Few Test Pix)