[Top] [All Lists]

Re: [OM] IMG: From the Distant Past

Subject: Re: [OM] IMG: From the Distant Past
From: Jim Nichols <jhnichols@xxxxxxxxxxxxx>
Date: Fri, 16 Jul 2021 15:00:41 -0500
Hi Moose,

You are correct on all counts.  I really have no documented basis for the film size this old lens was designed to cover, though not from lack of searching.  And I can't say exactly how old it is.  I think some were made as early as 1840-50, then returned to popularity circa 1880-90.  Among those listed for sale, Waterhouse stops far outnumber rotary stops like this one.  And, yes, I cherry-picked, using only the center of the lens. But, as an experiment, I was very impressed with the resolution of a hand-held image on a freezing January morning, even though I used processing aids.

Your discussion of the Nikkor-Q 200/4 and its Oly cousins was very interesting.  From discussions on the Olympus List and the LUG, I realize that size and weight are factors that become more important as we get older.  Though I have hand held the 50-200 SWD lens, I normally add a shoulder stock or monopod if at all possible. When shooting from a blind, I always use a tripod.

On 7/16/21 1:49 PM, Moose wrote:
On 7/15/2021 4:11 PM, Jim Nichols wrote:
Mike, I suspect it was intended for a 5x7 camera, which is about 96 times the size of a 4/3 sensor.  Not bad resolution for a 130 year old lens.

The basics of making a very slow, moderately long lens aren't particularly difficult. Also, your use is only of the center portion of the image circle. It could be pure crap in the corners, on the size film it was designed for, and you would have no idea.

96 times is also misleading. It linear resolution that matters, not area. Yup, ten times smaller is a lot, but not 100.

The things that make design with good results tough are speed and size/weight. Speed is obvious, I think. But the pressures of the marketplace figure in, too. Example: I have the first version of the Nikkor-Q 200/4 lens, designed in 1960. <https://imaging.nikon.com/history/story/0048/index.htm>

It is markedly superior in resolution to the later Oly 200/4 and 200/5. It is also a great deal larger <http://zone-10.com/tope2/main.php?g2_itemId=15147>

and heavier.

Quid Pro Moose

Jim Nichols
Tullahoma, TN USA

Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/

<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz