Archived posting to the Leica Users Group, 2012/10/16

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Subject: [Leica] OT: large format lens vs. medium format lens
From: richard at richardmanphoto.com (Richard Man)
Date: Tue, 16 Oct 2012 22:36:25 -0700
References: <CAF8hL-HGDbNOmhkrKP5J+t0n=iu+9OO5Kpk6XqF0CC_utTwKZw@mail.gmail.com> <80F9701439F20347874CE5E4E03C22E99BEEFB26@WhizzMAIL01.whizz.org> <037301cdac24$942141a0$bc63c4e0$@verizon.net> <CAF8hL-HP6AFqvg0Mr7Wj8XGObEMPuqqb2v00Xo79zjKNjytYQQ@mail.gmail.com> <038201cdac27$74ff8fe0$5efeafa0$@verizon.net>

The Shenhao 617 holder. There have been talk about 617 holders (not just
Shenhao's) do not keep the film flat enough :-(

On Tue, Oct 16, 2012 at 10:22 PM, Frank Filippone <red735i at 
verizon.net>wrote:

> the lens will cover the format.........and it is pretty modern, so it
> should
> be pretty sharp.
>
> The image circle of the 90 Nikkor SWD is 238mm.
> The 6x17 format has a diagonal of 180mm.
>
> Back to the questions about film flatness.... and "floppiness" in the
> camera...  The SWC is exceptional in this regard.....
>
> What film "holder" are you using?
>
> Frank Filippone
> Red735i at verizon.net
>
>
> -----Original Message-----
> From: lug-bounces+red735i=verizon.net at leica-users.org
> [mailto:lug-bounces+red735i=verizon.net at leica-users.org] On Behalf Of
> Richard Man
> Sent: Tuesday, October 16, 2012 10:08 PM
> To: Leica Users Group
> Subject: Re: [Leica] OT: large format lens vs. medium format lens
>
> Mainly the Nikkor 90mm SWD, but I think the other lens are similar...
>
> On Tue, Oct 16, 2012 at 10:02 PM, Frank Filippone
> <red735i at verizon.net>wrote:
>
> > Film flatness plays its part....
> > Your lens is trying to project an image circle equivalent to a 5x7
> > negative area....not an easy task....
> >
> > What lens are you using?
> >
> > Frank Filippone
> > Red735i at verizon.net
> >
> > Always been my understanding of it, not the same enlargement so not
> > the same lens resolving. Newer LF lenses are much better than most old
> > ones though....
> >
> > john
> >
> > -----Original Message-----
> >
> > As Iwas formulating the question, it sounds like the answer IS
> > obvious, but just want to confirm.
> >
> > I am testing the Shenhao 617 and it could be my focusing techniques
> > and other issues, but it appears to me that the images are not as
> > sharp on the same film as images made by, well, the Hassy SWC.
> >
> > Yes, I am expecting someone to jump in and say of course the SWC is
> > razor sharp because it's the legendary Biogon etc., but I am now
> > thinking that this generally will be the case, as the large format
> > lens are designed to cover large negative (and the smallest 4x5 dwarfs
> > the 617) so they do not generally have the resolution and sharpness
> > that a good medium format lens has.
> >
> > Is this correct?
> >
> > --
> > // richard <http://www.richardmanphoto.com>
> >
> >
> > _______________________________________________
> > 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.richardmanphoto.com>
>
> _______________________________________________
> 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.richardmanphoto.com>


Replies: Reply from henningw at archiphoto.com (Henning Wulff) ([Leica] OT: large format lens vs. medium format lens)
In reply to: Message from richard at richardmanphoto.com (Richard Man) ([Leica] OT: large format lens vs. medium format lens)
Message from john at mcmaster.co.nz (John McMaster) ([Leica] OT: large format lens vs. medium format lens)
Message from red735i at verizon.net (Frank Filippone) ([Leica] OT: large format lens vs. medium format lens)
Message from richard at richardmanphoto.com (Richard Man) ([Leica] OT: large format lens vs. medium format lens)
Message from red735i at verizon.net (Frank Filippone) ([Leica] OT: large format lens vs. medium format lens)