[LargeFormat] Re: long lenses and rollfilm formats

[Lee Carmichael]

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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