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Re: [OM] (OM) OT - sort of - apparent discernible resolution,

Subject: Re: [OM] (OM) OT - sort of - apparent discernible resolution,
From: "Wayne Harridge" <wayne.harridge@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 20 Apr 2012 09:57:50 +1000
Yes, so that the physical length of the lens is less than the focal length -
"compactness".

...Wayne


> 
> Even for small, mirrorless cameras with very short register distances?
> 
> Chuck Norcutt
> 
> On 4/19/2012 9:45 AM, Sawyer, Edward wrote:
> > Major differences exist between MF and LF lenses in a focal length
> > like 135mm, and something designed for small format (35mm). The small
> > format lens will invariably be a telephoto design, while the LF and MF
> > lenses will more likely (definitely in the case of LF) be a
> > symmetrical design, with the inherent corrections that come along with
> > it.  The rendering of the different optical formulas is significant.
> > All else being equal, a symmetrical lens (or something close to it)
> > will always have an advantage over other designs, thus another advantage
> for MF and LF glass.
> >
> >
> > On 4/19/12 6:16 AM, "olympus-request@xxxxxxxxxxxxxxxxx"
> > <olympus-request@xxxxxxxxxxxxxxxxx>  wrote:
> >
> >>> Brings up Moose's point about larger format having an inherent
> >>> advantage in producing images with narrow dof with very sharp plane
> >>> of focus with nice bokeh.
> >>
> >> But the differences held even when the focal lengths were similar. A
> >> 135mm lens in medium format produces the same DoF as a 135mm lens in
> >> 35mm format when the subject on film size remains the same. If the
> >> focal length and subject-film distance remains the same, the only
> >> advantage to the medium format is the amount of room in the image you
> >> have to work with for cropping.
> >>
> >
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