Re: [OM] Jeweler's camera

[C.H.Ling]

Ah! you are right, I just notice that. 

C.H.Ling

----- Original Message ----- 
From: "Chuck Norcutt" <chucknorcutt@xxxxxxxxxxxxxxxx>
To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
Sent: Monday, December 20, 2010 4:34 AM
Subject: Re: [OM] Jeweler's camera


> But one does not have to equalize the reproduction ratio by capturing 
> the same size image on film or sensor.  One can do it in post processing 
> as long as the lens is capable of a sufficiently small CoC to withstand 
> the additional magnification.  That was what I did in my first example. 
>  I used 100mm at 10 feet with a CoC of 30 lines/mm and a 50mm lens at 
> 10 feet with a  suitable CoC for a 4/3 sensor of 60 lines/mm.  Using a 
> conventional DOF calculator shows that the 50mm has much more DOF.
> 
> Chuck Norcutt
> 
> 

-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/