Re: [woodandbrass] Re: Process Camera.
- Hi,I was going on what I have in My Penrose annuals.RegardsOn 09/04/2009, at 2:20 AM, Rob McElroy wrote:
Sandy, Eric, et al.,Process lenses with a slot for Waterhouse stops were made continuously through the 1980s and probably beyond, so you can't use the presence of the slot on the lens as any kind of dating mechanism for the camera.Fewer and fewer printers experimented with changing the shape of their half-tone dots as the 20th century progressed, especially after color printing became the norm, instead of the exception, in the 1960s and 70s but the slot still existed on the lenses for those printers that wanted the option to do so. The slot performs double duty, and can hold a filter, diaphragm plate, or both together. The slot was also made so that the diaphragm plate could be tilted, which also altered the shape of the half tone dot. I have several Apo-Nikkor lenses made in the 1980s, and they were all originally sold with a set of aperture/diaphragm plates (specific to each lens) where the user could "for special effects, widen and modify the shape of the hole until the desired shape is achieved."Cheers,Rob McElroyBuffalo, NYOn Apr 8, 2009, at 6:51 AM, eric evans wrote:
Thanks again, Sandy. It's beginning to look more and more like pre-WW1, if that type of lens was becoming obsolete by the 20s.On Apr 8, 2009, at 6:27 AM, apbarrie wrote: