Difference between revisions of "Ricoh Auto TLS EE"
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| − | The Auto TLS EE is an [[SLR]] for [[35mm film]], introduced | + | The Auto TLS EE is an [[SLR]] for [[35mm film]], introduced in 1976<REF>The date 1976 for the introduction comes from the Ricoh Japan page linked below.</REF> by [[Ricoh]]. While it accepts any [[42mm screw lenses|42mm screw-mount]] lens, when used with proprietary Rikenon lenses set to "EE"<REF>In addition to the standard 50mm f/1.7 lens, [http://www.butkus.org/chinon/ricoh/ricoh_tls_ee/chart01.jpg this table] (scanned at [http://www.butkus.org/chinon/ OrphanCameras.com]) shows four additional focal lengths from 28mm to 200mm were offered.</REF> it offers [[shutter-priority]] autoexposure: The body is able to set the correct lens [[f-stop]] automatically in response to the brightness of the scene, with a viewfinder needle indicating the chosen aperture. |
Because the M42 mount was not designed with a linkage to tell the body what the [[Lens#Lens Speed|lens speed]] is, this must be set manually using a dial surrounding the rewind crank. When lenses other than the Rikenon-EE type are mounted, the indicated f-stop must be transferred to the lens's aperture ring by the user. Stopdown metering is also possible, by matching the needle to an index mark in the viewfinder, with the lens at its working aperture (e.g. by pressing the depth-of-field preview lever). | Because the M42 mount was not designed with a linkage to tell the body what the [[Lens#Lens Speed|lens speed]] is, this must be set manually using a dial surrounding the rewind crank. When lenses other than the Rikenon-EE type are mounted, the indicated f-stop must be transferred to the lens's aperture ring by the user. Stopdown metering is also possible, by matching the needle to an index mark in the viewfinder, with the lens at its working aperture (e.g. by pressing the depth-of-field preview lever). | ||
Revision as of 17:30, 27 September 2011
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| image by Just Plain Curt (Image rights) |
The Auto TLS EE is an SLR for 35mm film, introduced in 1976[1] by Ricoh. While it accepts any 42mm screw-mount lens, when used with proprietary Rikenon lenses set to "EE"[2] it offers shutter-priority autoexposure: The body is able to set the correct lens f-stop automatically in response to the brightness of the scene, with a viewfinder needle indicating the chosen aperture.
Because the M42 mount was not designed with a linkage to tell the body what the lens speed is, this must be set manually using a dial surrounding the rewind crank. When lenses other than the Rikenon-EE type are mounted, the indicated f-stop must be transferred to the lens's aperture ring by the user. Stopdown metering is also possible, by matching the needle to an index mark in the viewfinder, with the lens at its working aperture (e.g. by pressing the depth-of-field preview lever).
The CdS metering circuit measuring through the lens is powered by one PX675 1.35v mercury battery. The horizontally-traveling focal plane shutter offers a range from 1/1000 sec. through 1 sec. plus B, with flash sync at 1/60th sec.
Notes
- ↑ The date 1976 for the introduction comes from the Ricoh Japan page linked below.
- ↑ In addition to the standard 50mm f/1.7 lens, this table (scanned at OrphanCameras.com) shows four additional focal lengths from 28mm to 200mm were offered.
Links
- Ricoh Auto TLS EE online manual from Mike Butkus' OrphanCameras.com
In Japanese
