Lens data resource?

The nights are dark and empty

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The nights are dark and empty

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Nymphaea's, triple exposure

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Nymphaea's, triple exposure

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Nymphaea

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Nymphaea

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Jekyll driftwood

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wiseowl

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I'm looking at getting a second lens, I intend to get a used, possibly old lens. I'd like to research this before making a financial commitment. So, is there a recommendation for a good resource, or resources, be it website or book. It'd be nice to have information about image circle, resolution and even something that would give me an indication of value.

I know there's a wealth of knowledge here, and if I was to ask about specific lenses then I'm sure I'd get the information I'm after. But I don't have a specific lens to ask about and I'd feel a PITA if I kept asking the same question over and over.

Anyhoo I think I'd be happier researching this myself.

Cheers

Martin
 

rbarker

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There are actually several lens comparison charts on the http://www.largeformatphotography.info site, mostly for modern lenses, along with several articles discussing older designs. When considering older lenses, doing a search there often turns up threads regarding specific lenses, too.
 

nworth

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View Camera magazine (http://www.viewcamera.com) has also published several retrospective articles on lenses, generally organized by manufacturer. Charts show the lens characteristics, including coverage, and manufacturing dates. There are no test results, but there are often comments about image quality.
 

photomc

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Not sure wiseowl was being vague, as much as not sure what to ask....IMHO. That is how I feel when looking at all the different lens...Wise I know what you mean.

In my own case, would like to find a reliable shutter for the 8x10, something in a fairly modern shutter (the vintage Wollensak is nice, but right now needs some tlc), and something (some day) in a slightly wide (240mm) to normal (355mm). Oh yeah, since the eyes aren't what they used to be, something a tad faster than f/9 - :smile:

So, I have looked at many of the offered link before..and will do so again...but Wise I wish there were a better place to go look all this stuff up, too.
 

df cardwell

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There is a lot of stuff online that is rehashed, mostly incomplete, and much that is slightly twisted. Still, there is some good data: http://www.graflex.org/lenses/lens-spec.html is a good summary of 'contemporary' lenses.

There simply is NOT the kind of data laying about that you seek, for a couple reasons.

First, because the infatuation ( or infection ) with specs and numbers is a fairly recent phenomena which tries to apply a rigour to LF lenses that was never an issue in 'the golden age' -- nor relevent today !

Secondly, nearly all lenses made since the end of WW2 have been of three general designs: Plasmat, Biogon, or Artar. And each of the three designs fulfill one of the three general needs of and LF shooters kitbag. And in any given era, the manufacturerers have made virtually identical lenses, all of the highest quality, reflecting developments in cement, coating technology and glass availability. All lenses made in 1965, for instance, will be similar; all lenses made in 1985 will be similar, and made in 2005: similar.

Plasmats ( Symar, Sironar, Nikkor W, Fuji W ) are all derived from Rudolph's evolution of the Dagor. Besides being a fine general purpose lens ( a bit like a Jaguar that can carry sheets of drywall ), the Plasmat lends itself to efficient manufacture, AND subtle tweaking for specific purposes. Since we are unlikely to press the lenses' performance in technical areas ( common to the pre-digital era ! )
it's more than adequate to choose a normal lens from the Plasmat category and go take pictures. Since the patent of the original lens expired LONG ago, everyone has had free access to develop the design as needed; the technology has always been open to all designers, and each era has brought subtle changes.

Biogons are all derived from the ground breaking design of Bertele (Zeiss / Wild) immediately after WW2. Bertele based the Biogon upon a revolutionary mapping lens he made for Wild, which was inspired by a patent by Rossinov. Unpatentable by Zeiss, the Biogon was copied by Schneider ( Super Angulon ) and then evolved over the decades, with evolutionary improvements by Nikon, Rodenstock, and Fuji.

The Artar is the oldest of the common designs, dating from the 1920s. An apochromatic, flat field design by Goerz's Zoschke, it has been made by every lensmaker on the planet, perfected long ago, and while tweaked for sepcific applications, more than suitably brilliant for general picture making. Whether from Goerz, Schneider, Rodenstock, Nikon, Wollensack, Wray... anybody... they are all the same, and lovely lenses.

There are some lenses that don't fit into this pattern: Kodak's Commercial series of super-developed tessars and wide field gauss designs are probably the products of the last great push in large format deisgn, in the early days of WW2, and manufactured until the beginning of the LF demise in the 1960s.

In the old days ( Gosh, I hate saying that ) one usually took a wide lens and a long lens and went out to work.

For instance, a professional building an 8x10 outfit an American would have chosen a Goerz Dagor and and Artar, or a Kodak WF Ektar and Commercial Ektar, or a Schneider Symar, with either the Artar or Ektar type for the longer than normal lens.

Today, though, we can ransack the previous century for good lenses. Depending upon the format, and you technical needs, the choice will be safe, for most lenses are the same.

if you have, however, an aesthetic choice, the issue changes. Nearly all post WW2 lenses were designed for 'technical neutrality', they produce an image neither too hot or cold, hard nor soft, and are seen by some as boring. Many feel they are simply "commercial", and it is impossible to use any amount of craftsmanship to smooth the 'institutional' look of their images.

Most lenses made before WW2 are product of designer's whims, and manufacturers' limitations, and as a result, more often interesting. There will be magnificent choices availble to you in Wales for just over the border some of the finest lenses made in the history of photography were made. Ross, Dallmeyer, Aldis, Cooke, Wray, Watson... lenses of every category and application can be found. Dig up a pre WW2 or 1950's BJP annual, and look over the advertisements. Find a doddering old photographer and invest some Pub time.... you have a trove at your feet !

good luck, and share your results

d
 

Dan Fromm

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df, take a look at US patent # 2,721,499. Looks like a "modern" Biogon to me. For the original 6/4 Super Angulon, see US patent #2,781,695.

wiseowl, it would help if you told us what you wanted your second lens to do. "I want another one" isn't very specific.
 

Ole

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The Super Angulon started out as a kind of air-spaced Angulon with the outer negative element separated and greatly enlarged. Since then the design has been upgraded several times. Some versions are more "Biogon-like" than others.
 
OP
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wiseowl

wiseowl

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Wow,

thanks very much for all the links posted. This was the kind of thing I was looking for.

Dan: I was deliberately vague to pull in as many responses as I could. I don't feel informed enough to have been more specific at this point and so I didn't wish to exclude any suggestions. To expand a little, I currently have a 5X4 and a 90mm SA. I would like to add both a 150 and 210/240 or maybe something a little longer to that, in the fullness of time as they say. In addition to making a better informed descision when I come to choose a lens, I'm very curious to learn more about these lenses.

Mr Cardwell: Thanks for taking the time to share that information. I've copied your response and will keep it for reference. I will share results when I get something worthy.

Thanks all

Martin
 
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