From Wiki:
A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, which is usually viewed from above at waist level. In addition to the objective, the viewfinder consists of a 45-degree mirror (the reason for the word reflex in the name), a matte focusing screen at the top of the camera, and a pop-up hood surrounding it. The two objectives are connected, so that the focus shown on the focusing screen will be exactly the same as on the film. However, many inexpensive TLRs are fixed-focus models. Most TLRs use leaf shutters with shutter speeds up to 1/500th sec with a B setting.

For practical purposes, all TLRs are film cameras, most often using 120 film, although there are many examples which used other formats. No general-purpose digital TLRs exist, since their heyday ended long prior to the digital era. The main exception is the collector-oriented Rollei Mini-Digi, introduced as a rather expensive "toy" in 2004.[1]

Tags:   Old Camera Photography Kodak Duraflex IV Photo Photos Early Photography 1947 - 1960

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Tags:   Nikon Lens Landscape Photography Nikkor

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From Wiki:
A twin-lens reflex camera (TLR) is a type of camera with two objective lenses of the same focal length. One of the lenses is the photographic objective or "taking lens" (the lens that takes the picture), while the other is used for the viewfinder system, which is usually viewed from above at waist level. In addition to the objective, the viewfinder consists of a 45-degree mirror (the reason for the word reflex in the name), a matte focusing screen at the top of the camera, and a pop-up hood surrounding it. The two objectives are connected, so that the focus shown on the focusing screen will be exactly the same as on the film. However, many inexpensive TLRs are fixed-focus models. Most TLRs use leaf shutters with shutter speeds up to 1/500th sec with a B setting.

For practical purposes, all TLRs are film cameras, most often using 120 film, although there are many examples which used other formats. No general-purpose digital TLRs exist, since their heyday ended long prior to the digital era. The main exception is the collector-oriented Rollei Mini-Digi, introduced as a rather expensive "toy" in 2004.[1]

Tags:   Black an White BW Old Camera Photography Kodak Duraflex IV Photo Photos Early Photography 1947 - 1960

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Tags:   Stereo Viewer Early Phtography Photo Old Antique

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Type: Box roll film
Introduced: May 1949
Discontinued: July 1961
Film size: 620
Picture size: 2 1/4 X 2 1/4"
Manufactured: US-Brownie Hawkeye & Brownie Hawkeye Flash Model
Manufactured: France-Brownie Flash Camera
Lens: Meniscus
Shutter: Rotary
Numbers made: ?
Original price: Hawkeye $5.50 Flash $7.00

Description:
Molded plastic body; brilliant finder;
May 1949-Nov 1951: non-synchronized model.
Sept 1950-July 1961: Flash model;
Also manufactured in France as Brownie Flash Camera.

Approximate worth: Hawkeye: $10-15

Tags:   Brownie Hawkeye Camera Flash Photography Old Kodak Eastman George Eastman

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