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Re: [OM] OT: When is Voigtländer going to wake up? (Micro 4/3)

Subject: Re: [OM] OT: When is Voigtländer going to wake up? (Micro 4/3)
From: Dawid Loubser <dawidl@xxxxxxxxxxx>
Date: Wed, 6 Jan 2010 16:04:35 +0200
Come on, I though you guys knew me by know...

Light intensity stays the same, yes, but depth of field of a 40mm f/ 
1.4 on Micro4/3 is
the same as 80mm f/2.8 on full frame, or 150mm f/5.6 on my Mamiya, or  
300mm f/11 on
my Linhof.

No way will an image made with a 40/1.4 on Micro4/3 look the same as  
an image made
with an 80/1.4 on 35mm. Not only will DOF be much, much deeper, the  
40mm lens would
have to resolve twice as well as the 80/1.4 lens. That's not very  
likely, unless you are
putting a Leica Summilux 35mm f/1.4 ASPH on your Micro4/3.

When it comes to portrait lenses, shallow DOF is everything :-)


On 06 Jan 2010, at 11:31 AM, Chris Barker wrote:

> No, you're right, it doesn't change.  But to all intents and  
> purposes, to the photographer, it's an 80/1.4.
>
> I don't understand CH's point though ...
>
> Chris
>
> On 6 Jan 2010, at 09:25, Wayne Harridge wrote:
>
>>> I think that you're right, Andrew.  the 40/1.4 becomes an 80/1.4  
>>> with
>>> the 2x crop factor of the 4/3 cameras.
>>>
>>
>> It doesn't become anything different, it's still a 40/1.4 but has  
>> the angle
>> of view of an 80mm lens on 35mm FF. f1.4 is still f1.4, focal  
>> length is
>> still 40mm.
>
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