7X17 wide-angles

I have a friend who recently acquired a Korona 7X17 camera at an
auction. He would like to find a good wide-angle lens for it. I
believe that he would like something that would give him roughly the
same perspective as a 90mm or 100mm on 4X5. He would consider both
"vintage" or modern lenses. I think he'd sort of like to have a vintage
lens for the "look" and experience of using it on the camera. I think
he would prefer a lens in a shutter. Can anyone give some advice on
particular lenses he might consider that would cover 7X17?

Thanks very much,
Kevin

Kevin H. Phillips wrote:
I have a friend who recently acquired a Korona 7X17 camera at an
auction. He would like to find a good wide-angle lens for it. I
believe that he would like something that would give him roughly the
same perspective as a 90mm or 100mm on 4X5.

The Schneider 120mm or 121mm lens has astounding coverage and will be fairly
wide for the 7x17cm. (For perspective comparisons against inequal aspect
ratios, the rule is to determine 'normal' by using the long side (17cm) for
both width and height. )

On Thu, 19 Oct 2006 11:40:16 -0500, "j" wrote:

Kevin H. Phillips wrote:
I have a friend who recently acquired a Korona 7X17 camera at an
auction. He would like to find a good wide-angle lens for it. I
believe that he would like something that would give him roughly the
same perspective as a 90mm or 100mm on 4X5.

The Schneider 120mm or 121mm lens has astounding coverage and will be fairly
wide for the 7x17cm. (For perspective comparisons against inequal aspect
ratios, the rule is to determine 'normal' by using the long side (17cm) for
both width and height. )


Although the original poster was not specific on this point, I always understood
"7x17" to mean inches, not cm. The Schneider 120mm/121mm Super Angulons
would indeed be wide for such a format, but I don't think they'd cover it. The
image might be interesting nevertheless.

steve

"Steve Goldstein" wrote in message
...
On Thu, 19 Oct 2006 11:40:16 -0500, "j" wrote:

Kevin H. Phillips wrote:
I have a friend who recently acquired a Korona 7X17 camera at an
auction. He would like to find a good wide-angle lens for it. I
believe that he would like something that would give him roughly the
same perspective as a 90mm or 100mm on 4X5.

The Schneider 120mm or 121mm lens has astounding coverage and will be
fairly
wide for the 7x17cm. (For perspective comparisons against inequal aspect
ratios, the rule is to determine 'normal' by using the long side (17cm)
for
both width and height. )


Although the original poster was not specific on this point, I always
understood
"7x17" to mean inches, not cm. The Schneider 120mm/121mm Super Angulons
would indeed be wide for such a format, but I don't think they'd cover it.
The
image might be interesting nevertheless.

steve

Steve Goldstein wrote:

Although the original poster was not specific on this point, I always
understood "7x17" to mean inches, not cm. The Schneider 120mm/121mm
Super Angulons
would indeed be wide for such a format, but I don't think they'd
cover it. The image might be interesting nevertheless.

Ah, then he might appreciate the 210mm Super-Angulon.

In article , j wrote:
Steve Goldstein wrote:

Although the original poster was not specific on this point, I always
understood "7x17" to mean inches, not cm. The Schneider 120mm/121mm
Super Angulons
would indeed be wide for such a format, but I don't think they'd
cover it. The image might be interesting nevertheless.

Ah, then he might appreciate the 210mm Super-Angulon.

The 250mm Wide Field Ektar covers -- just barely. But these lenses
have very conservatively placed field stops, so if it covers, it should
be sharp to the edges.

I see from Mike Gudinowicz' message in the thread at
http://www.largeformatphotography.in...ad.php?t=14330 that
the 305mm Computar f9 covers. I had one of those, and I liked it quite a
bit, but it is really a copy/macro design and it does *not* have stops
to restrict the field for reasons of edge sharpness, so I would not expect
that lens to be terrific for 7x17 use.

I would expect a similar problem with the 273mm (11"?) Goerz Dagor listed
in that chart -- not that I've ever actually seen a 11" or 273mm Dagor.
Basically, below 300mm, it will be pretty slim pickings.

One additional option not shown in Mike's chart is the 210mm Super Symmar
XL. That is probably the best option of all -- it has a 500mm image circle
at f/22 and is supposed to be sharp as a tack -- but it is also a $3,000
investment.

--
Thor Lancelot Simon

"We cannot usually in social life pursue a single value or a single moral
aim, untroubled by the need to compromise with others." - H.L.A. Hart

In article ,
Thor Lancelot Simon wrote:

I see from Mike Gudinowicz' message in the thread at
http://www.largeformatphotography.in...ad.php?t=14330 that
the 305mm Computar f9 covers. I had one of those, and I liked it quite a
bit, but it is really a copy/macro design and it does *not* have stops
to restrict the field for reasons of edge sharpness, so I would not expect
that lens to be terrific for 7x17 use.

Sorry -- I had both 305mm and 240mm f/9 Computars, and I get them mixed
up sometimes. They both lack field stops where I think they should be,
but, still, the 305mm will cover with room to spare. I would not use
the 240mm for 7x17; it is not even really suitable as a wide angle lens
for 8x10 because it goes quite soft in the corners.

Also, be careful to test any Computar or Kowa lens you are thinking of
buying before forking over the money; I have owned a few and I can say
that the quality control on these is not so hot. Good ones are quite
good; bad ones not so.

If I had a 7x17, and the cash, I'd still go for the SSXL. In fact, even
for my 8x10, it's about the only lens for which I'd trade in my 250 WF
Ektar -- maybe.

--
Thor Lancelot Simon

"We cannot usually in social life pursue a single value or a single moral
aim, untroubled by the need to compromise with others." - H.L.A. Hart

7x17" Wide angles = 18.5" image circle

Consider wide-angle process lenses.

Compact vertical graphic-arts cameras had wide coverage
lenses.

A 165mm Rodenstock Graphigon from a nuArc VV1418
would cover 14x18" (22" circle) at 1:3 - 17.5"
circle at infinity. No movements, but a
dirt-cheap lens - don't pay over $50.

Agfa Repromasters are also common, some came
with a three-lens assembly.

--
Nicholas O. Lindan, Cleveland, Ohio
Darkroom Automation: F-Stop Timers, Enlarging Meters
http://www.nolindan.com/da/index.htm
n o lindan at ix dot netcom dot com

Nicholas O. Lindan wrote:

7x17" Wide angles = 18.5" image circle


Consider wide-angle process lenses.

Compact vertical graphic-arts cameras had wide coverage
lenses.

A 165mm Rodenstock Graphigon from a nuArc VV1418
would cover 14x18" (22" circle) at 1:3 - 17.5"
circle at infinity. No movements, but a
dirt-cheap lens - don't pay over $50.

Agfa Repromasters are also common, some came
with a three-lens assembly.

Thanks for all the input. Sorry I was not specific in the original post: yes, I meant 7X17inches.

Best regards,
Kevin