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Post by byuphoto on Jan 30, 2006 18:12:50 GMT -5
I just paid $25 for a working nettar with the 75mm f4.5 Novar and a Vario shutter. No holes in the bellows and all three shutter speeds work. Did I do good?
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PeterW
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Post by PeterW on Jan 30, 2006 19:46:27 GMT -5
If it's in good cosmetic condition that sounds pretty fair to me, Rick. £25 is about £13.50 GBP and though I gave only £9 for mine, working and also with an f/4.5 Novar, the black paintwork is so chipped and badly touched up that it will need a complete repaint, and I'll probably replace the two front parts of the leatherette which are OK-ish but rather scruffy. The Novar wasn't the top lens for the Nettars that was the Tessar, but I've had very nice sharp results from Novars on other Zeiss Ikon cameras, I think because at f/4.5 they weren't overstretched just for marketing.
Yours is a 518/16, which I have an idea was called the Signal Nettar though I'm not sure what the difference is between that and my 515/16.
Peter
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Post by byuphoto on Jan 30, 2006 20:07:33 GMT -5
The signal Nettar had a red flag that jump into the viewfinder when the shutter was fired. Here she is and I should have possesion sometime next week  |
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PeterW
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Post by PeterW on Jan 30, 2006 20:08:24 GMT -5
Hi Rick,
I wrote:
Just did a Google and found out. As well as the signal, your 518/16 is also called the Nettar IIb, has a deeper chrome top and double exposure prevention. My 515/16 has a thin plain old black top and no double exposure prevention, so yours is a bit upmarket from mine.
Peter
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Post by byuphoto on Jan 30, 2006 20:11:04 GMT -5
Peter, I know on my Moskva5 that if I set it to f11 and about 13 feet it will be at the hyperfocal but it has a 105mm. Do you know what the hyperfocal is fo maximum DOF for the 75?
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Post by byuphoto on Jan 30, 2006 20:11:52 GMT -5
PS bought it from a guy on another forum and not from evil bay
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PeterW
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Post by PeterW on Jan 30, 2006 20:29:11 GMT -5
Hi Rick, If you run Windows there's a quite useful hyperfocal distance chart for lenses from 28mm to 85mm at www.dofmaster.com/It says for Windows there so I presume it might not come down using other systems. According to the chart the hyperfocal distances for a 75mm lens are 27 feet at f/22 (the smallest stop on my Novar), 38 feet at f/16 and 41 feet at f/11. Quite a few Zeiss Ikon cameras have a red dot system where there's a red dot on the aperture scale and one on the distance scale. You line the two up to get the hyperfocal distance giving the greatest depth of field, but this system isn't on my Nettar. Don't take this as gospel because I'm a bit shaky on it, but I have an idea that the DOF at the hyperfocal distance for any stop and distance setting extends from the distance set on the scale to 'infinity', and to about a third of that distance from the setting on the distance scale towards the camera. I suppose for practical purposes you could take 'infinity' as being about 100 to 150 feet or so away. So at f/11 and 41 feet a 75mm lens should have a DOF from infinity back to about 22 feet away (roughly) - but don't blame me if it doesn't work out quite like that!  . Peter |
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Post by byuphoto on Jan 30, 2006 21:11:16 GMT -5
Quite a few Zeiss Ikon cameras have a red dot system where there's a red dot on the aperture scale and one on the distance scale. You line the two up to get the hyperfocal distance giving the greatest depth of field, but this system isn't on my Nettar.
Yes, my Moskva 5 has this setting and it works quite well. Thanks for all the info
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