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#1
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15" F/11 Red Dot Artar ?
I am getting a 15" F/11 Red Dot Artar (it's on an enlarger arriving soon).
Never heard of such. Has anyone some information on that specific lens? |
#2
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15" F/11 Red Dot Artar ?
jjs wrote in message ... I am getting a 15" F/11 Red Dot Artar (it's on an enlarger arriving soon). Never heard of such. Has anyone some information on that specific lens? The Apochromatic Artar is a very famous lens. These were made by Goerz from the early 'teens and continued by Schneider after they bought out Goerz American Optical in the mid 1970's. I am not sure when the last one was built. The Artar was the most widely used process lens in the world. It is a four element air-spaced lens of a type sometimes called a Dialyte, based on the Celor lens designed by Emil von Hoegh, the inventor of the Dagor lens. The Artar was designed by Walther Zschokke. The characteristics of the Artar are outstanding color correction for both longitudinal and lateral color, rather narrow coverage angle (typcial of Celor type lenses) and low speed. Process lenses are optimized for unity magnification, that is, equal object and image distances, however, when stopped down somewhat, they have good correction at infinity up to a coverage equal to an image circle about equal to the focal length. Stopping down does not increase coverage significantly with this type of lens. Older, uncoated, Artars tend to have some flare because of having eight glass-air surfaces, however this does not affect the sharpness. The Red-Dot series were the last of the Artars, the first one being built c.1960. AFAIK all Red-Dot Artars are coated. Late Artars were available with some adjustment of element spacing to optimize them for other than 1:1 reproduction. In general, the coated versions have some adjustment, the shutter versions being adjusted for more distant objects than the barrel types. This specifically includes the Red-Dot series. Artars were also widely used for very high quality enlarging before modern specialized enlarging lenses became available c.1960's. The most common focal length is 19" but 15" is also a common FL. Artars were available in focal lengths from perhaps 4" to about 70". Process photography was the making of printing plates for photo-mechanical reproduction. For four-color work the three color images must be exactly in focus and of exactly the same size, this is what the Artar was designed to do. Most barrel mounted Artars have slots for the special stops used for color process work and for filters. 15" is a bit long for enlarging even for 8x10. At 1:1 any lens covers an image circle that is double its infinity coverage. For 8x10 about a 10" lens is adequate although a longer lens will give you better illumination uniformity. -- --- Richard Knoppow Los Angeles, CA, USA |
#3
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15" F/11 Red Dot Artar ?
"Richard Knoppow" wrote in message ... 15" is a bit long for enlarging even for 8x10. At 1:1 any lens covers an image circle that is double its infinity coverage. For 8x10 about a 10" lens is adequate although a longer lens will give you better illumination uniformity. [snip usual most excellent infromation from Mr Knoppow] I've come across all but a 15" before. Interesting. Well, I will have it Sunday! I think this lens will be just ideal for our purposes of max ~2X enlargements from 8x10. The enlarger is a Saltzman. Will need a head and I can work that out. |
#4
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15" F/11 Red Dot Artar ?
jjs wrote in message ... "Richard Knoppow" wrote in message ... 15" is a bit long for enlarging even for 8x10. At 1:1 any lens covers an image circle that is double its infinity coverage. For 8x10 about a 10" lens is adequate although a longer lens will give you better illumination uniformity. [snip usual most excellent infromation from Mr Knoppow] I've come across all but a 15" before. Interesting. Well, I will have it Sunday! I think this lens will be just ideal for our purposes of max ~2X enlargements from 8x10. The enlarger is a Saltzman. Will need a head and I can work that out. If by 'head' you mean a lamphouse Arista makes a coldlight head that fits the Saltzman. There were a number of heads available for it from both the original manufacturer and also aftermarket. The original lamp on most Saltzman's used mercury arc tubes but there was also a focusing condenser head using a large incandescent lamp and a fluorescent lamp head. Color heads were available as aftermarket items. Saltzman made three 8x10 models, a studio enlarger, with a single support rail for the bellows, the deluxe studio model which has two support rails, and the 10x10 aerial film printer, similar to the deluxe but even heavier. These were the best LF enlargers available at the time and maybe ever. When setup right they are very smooth and stable. Originally, they came with a shutter similar to a Packard shutter, which fitted under the lens. This is because the mercury arc type lamp must be left running continuously. Actually, this is a good idea for any gaseous discharge lamp like conventional fluorescent lamps. I have a Saltzman catalogue but its among my famous stored away stuff and I don't know where it is any more. I've never seen on on-line anywere but they may exist. For those who have never seen a Saltzman enlarger they resemble a vertical milling machine. -- --- Richard Knoppow Los Angeles, CA, USA |
#5
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15" F/11 Red Dot Artar ?
"Richard Knoppow" wrote in message ... If by 'head' you mean a lamphouse Arista makes a coldlight head that fits the Saltzman. There were a number of heads available for it from both the original manufacturer and also aftermarket. Yes, I've found a number of heads that fit it properly. Spendy, too. Speaking of condensers, check them out he http://www.hkhinc.com/sffacility/saltzman/saltzman.htm (not my site). Originally, they came with a shutter similar to a Packard shutter, which fitted under the lens. This is because the mercury arc type lamp must be left running continuously. Ah, yes, many years ago we had a conversation about using a shutter with such lamps. I have a 110V shutter that would work. Dunno how the lamphousing will finally come about. For those who have never seen a Saltzman enlarger they resemble a vertical milling machine. I am so glad to get this one. Of course, it won't fit in my darkroom but I had planned to eventually rent some space in our local manufacturing district. |
#6
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15" F/11 Red Dot Artar ?
jjs wrote in message ... "Richard Knoppow" wrote in message ... If by 'head' you mean a lamphouse Arista makes a coldlight head that fits the Saltzman. There were a number of heads available for it from both the original manufacturer and also aftermarket. Yes, I've found a number of heads that fit it properly. Spendy, too. Speaking of condensers, check them out he http://www.hkhinc.com/sffacility/saltzman/saltzman.htm (not my site). Originally, they came with a shutter similar to a Packard shutter, which fitted under the lens. This is because the mercury arc type lamp must be left running continuously. Ah, yes, many years ago we had a conversation about using a shutter with such lamps. I have a 110V shutter that would work. Dunno how the lamphousing will finally come about. For those who have never seen a Saltzman enlarger they resemble a vertical milling machine. I am so glad to get this one. Of course, it won't fit in my darkroom but I had planned to eventually rent some space in our local manufacturing district. Just out of morbid curiosity, roughly how much does one of these beasties weigh? Does it come with a floor stand as a standard configuration (I'm envisioning a big drill press, as I'm not familiar with a milling machine.)? And finally, would this be the perfect enlarger to print all those 110 and 126 size negs I've got left over from twenty-plus years ago? (OK, just joking with that last question-- I do know better!) As for it not fitting in your darkroom, when I built my current darkrooms, I failed to measure countertop to ceiling for my D2V. When it came down to moving in, I found I couldn't extend it all the way up. I boted it to the countertop (giving an extra inch or so by eliminating the baseboard), and cut a hole in the ceiling so the lamphouse would go up between two rafters. |
#7
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15" F/11 Red Dot Artar ?
"Ken Hart" wrote in message ... jjs wrote in message ... "Richard Knoppow" wrote in message ... If by 'head' you mean a lamphouse Arista makes a coldlight head that fits the Saltzman. There were a number of heads available for it from both the original manufacturer and also aftermarket. Yes, I've found a number of heads that fit it properly. Spendy, too. Speaking of condensers, check them out he http://www.hkhinc.com/sffacility/saltzman/saltzman.htm (not my site). Originally, they came with a shutter similar to a Packard shutter, which fitted under the lens. This is because the mercury arc type lamp must be left running continuously. Ah, yes, many years ago we had a conversation about using a shutter with such lamps. I have a 110V shutter that would work. Dunno how the lamphousing will finally come about. For those who have never seen a Saltzman enlarger they resemble a vertical milling machine. I am so glad to get this one. Of course, it won't fit in my darkroom but I had planned to eventually rent some space in our local manufacturing district. Just out of morbid curiosity, roughly how much does one of these beasties weigh? Does it come with a floor stand as a standard configuration (I'm envisioning a big drill press, as I'm not familiar with a milling machine.)? And finally, would this be the perfect enlarger to print all those 110 and 126 size negs I've got left over from twenty-plus years ago? (OK, just joking with that last question-- I do know better!) As for it not fitting in your darkroom, when I built my current darkrooms, I failed to measure countertop to ceiling for my D2V. When it came down to moving in, I found I couldn't extend it all the way up. I boted it to the countertop (giving an extra inch or so by eliminating the baseboard), and cut a hole in the ceiling so the lamphouse would go up between two rafters. The Saltzmans were made as a unit with a five leg table as part of the machine. The weight varies with the model. I am not sure of the 5x7 and 8x10 studio enlargers but the aerial enlarger weighs about 800 lbs. The up and down motion and focusing are controlled by chain drives connected to handwheels on the front of the table. Some also have a small handwheel for setting the f/stop. I don't remember the exact clearance needed for the 8x10 but think is around 12 feet. The best way to mount a D2V or similar enlarger is on a table with moveable baseboard. Omega actually made one with a crank-up baseboard but I think I've only ever seen one. Its not difficult to build a table with shelves for the baseboard. That way you can make very large prints without having to swing the over to project on the floor. Saltzman was associated with a company named Ceaser Manufacturing Co. I am not sure who built what. Saltzman sold very heavy duty enlargers and monopole studio stands which were very widely used in New York studios. The also made or sold heavy duty strobe units. I have one of their tripod type studio stands, very heavy, very stable, probably would support 500 lbs. These things were actually made for _field_ use, whoa! -- --- Richard Knoppow Los Angeles, CA, USA |
#8
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15" F/11 Red Dot Artar ?
"Ken Hart" wrote in message ... Just out of morbid curiosity, roughly how much does one of these beasties weigh? Does it come with a floor stand as a standard configuration (I'm envisioning a big drill press, as I'm not familiar with a milling machine.)? The largest was built for military aerial photo printing and it is close to 1,500 pounds, 12' tall. The other 10x10" enlargers were about 800 pounds. Mine is the later. Gosh, maybe I should upgrade. As for it not fitting in your darkroom, when I built my current darkrooms, I failed to measure countertop to ceiling for my D2V. When it came down to moving in, I found I couldn't extend it all the way up. I boted it to the countertop (giving an extra inch or so by eliminating the baseboard), and cut a hole in the ceiling so the lamphouse would go up between two rafters. You sure aren't the first to go there! (Now, how would I know that?) Richard K! About your stuff in storage: I just checked Craig Camera http://www.craigcamera.com/ and they have a Saltzman catalog for $75. |
#9
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15" F/11 Red Dot Artar ?
"Richard Knoppow" wrote in message
... The Saltzmans were made as a unit with a five leg table as part of the machine. The weight varies with the model. I am not sure of the 5x7 and 8x10 studio enlargers but the aerial enlarger weighs about 800 lbs. Look at this: the Real Deal of Saltzmans (the baseboard, winders and chain are not on it): http://www.aardenburg-imaging.com/im..._S3-02(rw).jpg (from http://www.aardenburg-imaging.com/news2007.html) And this site says his Saltzman is 1500 pounds: http://www.hkhinc.com/sffacility/saltzman/saltzman.htm We gottta get your catalog out of storage, Richard.. |
#10
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15" F/11 Red Dot Artar ?
jjs wrote in message ... "Richard Knoppow" wrote in message ... The Saltzmans were made as a unit with a five leg table as part of the machine. The weight varies with the model. I am not sure of the 5x7 and 8x10 studio enlargers but the aerial enlarger weighs about 800 lbs. Look at this: the Real Deal of Saltzmans (the baseboard, winders and chain are not on it): http://www.aardenburg-imaging.com/im..._S3-02(rw).jpg (from http://www.aardenburg-imaging.com/news2007.html) And this site says his Saltzman is 1500 pounds: http://www.hkhinc.com/sffacility/saltzman/saltzman.htm We gottta get your catalog out of storage, Richard.. Some day labor and cheap sheving will do it. This appears to be the deluxe enlarger for 10x10. Note the twin post supports for the bellows. Also, it has the condenser lamphouse. This was equipped with a 45 degree mirror to lenghten the light path from the lamp and keep the thing from being even taller. The head and support (the triangular system of tubes) runs up and down the support column by means of bicycle type chains driven by handwheels on the front. These are not shown in the photos. The largest aerial film printer had two support columns. I don't doubt this weighs in at 1500 lbs or even more. Better have a strong floor as well as a tall ceiling. I have lusted after one of these guys since I was in highschool but doubt I will ever have one. They are on the market, along with the process lenses, because most of the work they were designed to do is done by digital means now. -- --- Richard Knoppow Los Angeles, CA, USA |
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