[LargeFormat] Re: long lenses and rollfilm formats

[philip Lambert]

Thanks, very clear.  Philip
----- Original Message -----
From: "Lee Carmichael" <click76112@home.com>
To: <largeformat@f32.net>
Sent: Saturday, April 14, 2001 3:50 PM
Subject: RE: [LargeFormat] Re: long lenses and rollfilm formats


> All,
>
> I have a 305 G Claron and I can say that there is no problem using this
> graphic arts lens as a continuous-tone lens.  It screws into a copal #1
> without any need for spacers and is as sharp as any of the other lenses I
> own, even at infinity. (I have a 150 Fujinon in a Copal #0 and a 240
Sironar
> in a Compur #3) I would not hesitate to recommend this lens for all photo
> applications.
>
> Lee Carmichael
> mailto:click76112@home.com
>
>
> -----Original Message-----
> From: largeformat-admin@f32.net [mailto:largeformat-admin@f32.net]On
> Behalf Of Paul and Paula Butzi
> Sent: Saturday, April 14, 2001 9:29 AM
> To: largeformat@f32.net
> Subject: Re: [LargeFormat] Re: long lenses and rollfilm formats
>
>
>
> > Anybody know whether long lenses (eg 300mm  Symmar-Sironar- Xenar) are
> > inherently sharper than telephotos of similar focal length, or much more
> > compact in the outfit bag?  Obviously the telephoto construction is
likely
> > to narrow the maximum field of view/movements but used with rollfilm
backs
> > this does not much matter.
>
> I don't have much experience with telephotos but can cite some info from
> literature I have on hand.
>
> The Nikkor T 270mm f/6.3 weighs 590 grams (20.8 oz), and is 98mm long,
> and takes 67mm filters.  Flange focal distance is 187.6mm.
>
> The Nikkor T 360mm f/8 weighs 800 grams (28.2 oz) and is 119.6mm long,
> taking 67mm filters.  Flange focal distance is 261mm.
>
> Both Nikkors fit in Copal #1 shutters
>
> By way of comparison, the 300mm f/9 Nikkor M weighs 290 grams (10.2 oz)
> and is 35.6 mm long, and takes 52mm filters.
>
> The 300mm Fuji is similarly sized to the Nikkor-M.
>
> I don't think there's a plasmat (e.g. Apo-Symmar, Apo-Sironar, Nikkor-W)
> longer than 210mm which doesn't require a Copal #3 shutter (and is
therefore
> huge and heavy).  As an example, the 300mm Nikkor-W f/5.6 weighs 1250
grams
> (44.1 oz) and is 90.5mm long, taking 95mm filters!
>
>
> > On a related point, in the UK it is possible to buy good used ApoRonars
or
> G
> > Clarons about 300mm for a lot less than TeleArtons.  F9 doesn't look too
> dim
> > on the groundglass in daylight; these graphic arts lenses evidently are
> > corrected for close work- does this make them unsuitable for distant
> > subjects or do they just need stopping down?
>
> I own (and use quite heavily) a 300mm Nikkor-M, and it seems like most of
> the landscape 4x5 photographers I know or run into in the field have one
> in their bag.  It's light, sharp, flare resistant, and relatively
> inexpensive.  For
> a while it was impossible to find used but I see them run by on Ebay
> regularly
> now.
>
> Both the Nikkor and the equivalent Fuji are optimized for infinity.
>
> I can't really comment firsthand on what the G-Claron or Apo-Ronar
> performance would be like at infinity.
>
>
> -Paul
>
>
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