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For precisions sake, it was a 26mm, that is a different sort of animal and very very rareToday on Ebay,
Kern Macro Switer 25mm/F1.1 was sold for $1099
The prices have soared since we are having the discussions and tests on this and other fora and a new use has been found for these old lensesI'm wondering if the price of these lens is fair or just hyped.
There is a Schneider publication which gives some details. It does not state the coverage, but at least a negative list of lenses that are not fit for 1". I am attaching it to this post, for whatever use you want to make of it. Double-click on the picture to open (needs Adobe Reader)Here is the list of C-mount 25mm lens with image circle size for G1.
Please follow up.
They must be old stock (or made by somebody else). The Kern company, the maker of the Switar lenses, was taken over in 1988 by Leica and the plant closed down in 1991.I also checked the retail price of those lenses. Brand new Macro Switers are still sold at Bolex Swiss, The price is about $2500 US. They must be really good lenses...
If I'm reading those specs right, the back focal length on this lens is 13.89mm so the G1 would have the sensor a bit further back than it should be at 20mm, making the lens a bit less wide than rated, guaranteeing coverage?Has anybody tried one of these or the 25mm version? CCD Direct can get the 25's too, for the same price.
Liza,If I'm reading those specs right, the back focal length on this lens is 13.89mm so the G1 would have the sensor a bit further back than it should be at 20mm, making the lens a bit less wide than rated, guaranteeing coverage?
Could someone with more experience with C mount look at those specs?
A f0.95 lens for $390 seems like a steal!
Actually, the full specs here indicate it's for 1" sensor, so it's a little better. Wolfgang Raabe claims here the Navitar 50/0.95 covers the full sensor on G1 with room to spare, but who knows how the 25mm would do.Liza,
According to the ad, the lenses are for a max. of 2/3" (11mm), while the G1 needs 23.5mm coverage (image diagonal), so you would end up with a round picture about half the diameter of the G1, the rest would be smearing and/or vignetting. The fact that they come in c-mount is irrelevant.
Cheers
Peter
Beautiful colors. And indeed, we have found a new Holga, a bit pricey though ...Here are a couple of shots from the G1 using the Pentax 28mm, F1.4 CCTV lens. Vignetting on both with considerable smearing - but the color is lovely
Some Holga folks will love these little c-lenses
Much betterPicture #2 raw file, cropped and worked on in Lightroom
Actually, the full specs here indicate it's for 1" sensor, so it's a little better. Wolfgang Raabe claims here the Navitar 50/0.95 covers the full sensor on G1 with room to spare, but who knows how the 25mm would do.
A 25/0.95 16mm cine lens sold on ebay today for $260, wish I could have bid on that one....
I got an email back on the 50, he said he had to do the custom m4/3 mount to get it to focus to infinity. I don't know if machining was an option. Anyhow, check out the photos from the 50... they look really good!It would be VERY interesting if the 25mm 0.95 1" version can focus to infinity. From measuring the pixels on the cad drawing the diameter is around 36mm which would work nicely with the current adapters. The diameter of the 50 0.95 is way bigger, which I guess is why the one on ebay has a custom mount on it.