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Specification

Manufacturer description #1

The Mamiya/Sekor DTL Series 35mm single lens reflex cameras incorporate two separate thru-the-Iens metering systems - one system for "Spot" readings and one system for "Averaging" or integrated readings. This technological breakthrough represents the most significant advance in 35mm Single Lens Reflex picture taking since Mamiya's engineers created the eminently successful TL series.

The Mamiya/Sekor DTL system offers the following advantages: (1) It measures the raw light as it passes through the lens, and this is done at the same aperture as is used in taking the picture. (2) It can be used as either a true spot meter, measuring only that portion of the picture deemed most important by the photographer - or an averaging meter, measuring the entire picture so as to provide an average reading for a subject with a variety of contrasting tones. (3) It does not slow down the picture taking process because Mamiya/Sekor's Human Engineering controls, provide for switching the meter "on" and "off," and the selection of the "Spot" or the "Averaging" mode of light measurement while the camera is in the picture-taking position. (4) There are no complicated mechanical or electronic systems that may go out of adjustment and require expensive repairs. There are no special calculations or compensations to be applied when using non-automatic lenses or lens attachments.

Best of all, Mamiya achieved the incorporation of two separate thru-the-Iens metering systems in a single camera without any compromise whatever in the quick and efficient use of the camera.

With the introduction of the new Mamiya/Sekor DTL Series cameras, it was unnecessary for Mamiya's engineers to sacrifice any of the superb innovations which were characteristic of the TL Series. In retaining and improving upon Mamiya/Sekor's highly acclaimed Human Engineering features, the designers extended and enhanced the efficiency of a system already established as a leader in its field.

[1] The film speed dial incorporates both ASA and DIN scales, with new film speed ratings of from 25 to 3200 ASA and 15 to 36 DIN. All settings are clearly defined by engraved numbers. The electronic flash synchronization speed setting (1/60 sec.) is shown in red.

[2] An exposure meter "off" locking button is conveniently located on the top of the center shaft of the film advance lever. Simply depressing this button locks the meter in the "off" position and retracts the film advance lever.

[3] The large viewfinder on the DTL insures a comfortable and adequate view of the picture area as covered by the lens, even if the photographer wears glasses.

[4] The oversized instant return mirror of the DTL offers protection against a vignetted image when lenses of extremely long focal lengths are used, and distributes the light evenly over the entire viewing screen for effective viewing and accurate meter readings.

[5] Mamiya/ Sekor's Human Engineering design places all the essential controls of the camera so that they may be operated with a minimum of effort on the part of the photographer. An entire roll of film may be correctly exposed in the DTL camera, covering a variety of lighting conditions without ever removing the camera from the picture taking position.

[6] Mamiya/Sekor lenses are characterized by their silky smooth action, functionally located controls and optical excellence. An added advantage of the universal thread lens mount is the availability of thousands of lenses of other manufacturers, all designed to fit this mount. The owner of the new DTL camera may choose 35mm SLR lenses of practically any focal length, mechanical construction or optical design.

[7] Focusing the Mamiya/Sekor DTL is extremely easy, because of the efficient fresnel viewing screen with the micro-diaprism rangefinder center spot and matte ring. This combination provides for a brilliant view of the subject, accurate determination of depth of field, and rapid critical focusing adjustments.

[8] A visual control center keeps the photographer in complete control of all camera operations. All control function indicators, including exposure needIe and reference points, the 6% spot reading area, the "Spot" or "Average" mode indicator and a micro-diaprism focusing spot, are precisely located in the viewfinder of the Mamiya/Sekor DTL, providing continuous visual control of all the camera's functions.

[9] The lens mount with universal thread incorporated in the Mamiya/Sekor DTL Series is precisely machined to insure proper seating and alignment of all compatible lenses and optical attachments. This simple but proven design reduces the risk of costly damage often encountered during the changing of lenses on cameras using other lens mounts.

[10] Full flash synchronization is provided by Mamiya/Sekor's separate "FP" and "X" terminals. A complete range of shutter speed and terminal combinations enable the photographer to choose from an extended variety of flash bulbs and electronic flash equipment.

Manufacturer description #2

To take more exciting and creative pictures, you need more control of your exposures. Regardless of the source or sources of light, you should be able to record the scene exactly as you see it. Only the Creative Switch on the Mamiya/Sekor DTL makes this possible. It even protects your imagination from unthinking automation which can read the scene, but doesn't know what's important in it to you.

For the easy shots with front lighting, set the Creative Switch on the Mamiya/Sekor DTL to "A" for an averaged meter reading. If the subject is back or sidelit, or the lighting gets a little confusing, switch to "S" and take an exact spot reading of the most important element in your scene. Almost all fine focal plane 35mm SLR cameras have one of these metering systems; only the Mamiya/Sekor DTL has both. And you need both to capture every picture that your lively imagination can discover.

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