The Asahi Pentax MX ASAHI PENTAX
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Achieve the impossible with the impossible achievement: the Asahi Pentax MX ASAHI PENTAX ASAHI PENTAI WHY ALL THE FUSS ? • World's first professional ultra compact camera with full-information viewfinder. ~ The announcement of another high quality • World's first "magic needle" loading PROFESSIONAL camera from Asahi Optical Company can system. hardly come as a surprise. After al l, Asahi .8 interchangeable focusing screens. MOTOR DRIVE CAMERA Optical has been manufacturing • Choice of auto winder (2 fps) or motor incomparable cameras for the past 25 drive (5 fps). years. With 6,000,000 Asahi Pentaxes • Interchangeable data back. already sold, there isn't anyone who hasn't • 250 exposure Bulk Film Magazine Back heard of a Pentax camera. So why all the available. DYNAMITE! fuss about another one? • Extensive range of SMC Pentax lenses Like a stick of dynamite, the Asahi Pentax Well, a revolution is always exciting. Take to choose from. MX is small, but packs a powerful wal lop! the time Asahi Optical introduced the • Smaller camera, but bigger, brighter The most explosive thing to happen to world's first through·the-Iens metering viewfinder. photography in a decade, the MX destroys system, there was a lot of excitement • Smaller camera, but bigger, stronger parts. all the myths claiming that a rugged created then, and you have to admit the • Tri-color LED exposure read-out. camera must be bulky and weighty. Turn excitement was justified. The same is true • Three-way focusing. the pages to discover why the world's for the time Asahi unveiled the first • Hot Shoe with built-in circuit breaker. featherweight, the MX, is the world's quick-return mirror, or the first aperture • Memo Holder. heavyweight! priority automatic exposure 35mm single • Self-Timer. lens reflex. • FP and X synchronization. What specifically, then, is so exciting about • Depth of Field Preview. the very latest Asahi Pentax, the MX? The • Unique meter switch. big fuss is doubtlessly due to the fact that • Shutter Release Button Lock. never before have so many revolutionary • Shutter Cocked Indicator. features been simultaneously incorporated • Extensive ASA range of 25-1600. into a single camera, features such as the • ASA Dial safety lock. following : • Broad exposure measurement range of • World's smallest 35mm SLR motor EV 1-19 (100 ASA, f/1.4). drive camera. Despite its through·the·lens viewing and • World's lightest 35mm SLR motor metering, interchangeable focusing screens and drive camera. backs, as well as provision for auto winder and motor drive, the Asahi Penta x MX is smaller • Absence of mirror shock. than a well·known (German) 35mm range· • World's first camera with Gallium finder camera! Arsenide Phosphide Photo Diodes. - 3 SIZING UP THE PENTAI ~ I' 135.5 I ~ 67.5 -1 • Length w/50mm f/1A lens -------86.5mm Measuring merely l35.5mm in length, the MX is shorter than w/50mm f/l .2 lens 98mm 99% of all other 35mm SLR's, offering just enough room for • Weight the perfect grip. As the Pentax ME is the only 35mm SLR lighter in weight than • Shoulder Height the MX, the MX is unquestionably the world's lightest motor Matched by none, the shoulder height of the MX is an drive 35mm SLR. See for yourself in the table below. incredible 60.5mm, or approximately the same height as a box Body only 495g of 35mm film! w/40mm f/2.8 lens 605g • Maximum Height w/50mm f/l.7 lens 685g With a maximum height of 82.5mm, the MX is no taller than w/50mm f/1A lens ------- 735g the average pack of cigarettes. w/50mm f/l.2 lens 880g • Depth The MX, then, sizes up to be the world's smallest and lightest Regardless of the standard lens mounted on the MX, it is professional motor drive 35mm SLR. Its minute size and light unbelievably slim. Just take a look at the figures below: weight make it the paragon of portability, rapid handling, and w/40mm f/ 2.8 lens 67.5mm operating ease. w/50mm f / l.7 lens------- 80.5mm 4- NOMENCLATURE o Self-timer lever/ Depth-of-field ~ Depth-of-field scale preview lever ® Distance scale @Aperture read-out prism window ([!) Focusing ring E) FP-sync terminal ® Upraised alignment dot a X-sync terminal ([!) ASA window o Neck strap ring lug ® "Cocked" indicator @ Lens release lever aD Shutter release button 6 Film transport coupler fl) Shutter button lock lever €) Film rewind button fll Exposure counter (1) Motor Drive/Tripod receptacle il Film rewind knob/ Back ® Battery chamber cover opener ~ Winder / Motor Drive direct !Zl Hot shoe X contact contact term i nal III Shutter speed dial ® Guide pin channel !Iil Film advance lever ® Aperture ri ng SPECIFICATIONS 0 0 Type 35mm full-frame SLR camera with open-aperture center-weighted winding comfort. 162 throw with a stand-off angle of 20 • Rewind crank Through-The-Lens meter. for speedy film rewind . Lens mount Pentax K bayonet. Film loading New magic-needle quick/sure loading. Standard lenses SMC Pentax 50mm f / 1.2 SMC Pentax -M 50mm f / 1.7 Automatic winder MX body accepts Winder MX for up to approx. 2 SMC Pentax-M 50mm f / 1.4 SMC Pentax-M 40mm f / 2.8 frames-per-second (single-frame and consecutive exposure possible) Shutter Horizontal-run, rubberized silk focal-plane shutter; speeds from and Motor Drive MX for up to approx. 5 frames-per-second (single 1/1000 to 1 sec. plus B; shutter lock and "Cocked" indicator. frame and consecutive ex posure operation possible), for automatic, Flash synchronization FP and X-sync terminals, plus hot shoe; 1/60 sec . speedy film wind and shutter cocking. X synchronization. Exposure counter Automatic reset type. Self-timer Delays shutter release by 4 - 12 seconds; self-timer start button Exposure meter Open-aperture, center-weighted Through-The-Lens provided. meter, with GPD cells for fast light response, with tri-colored LED Viewfinder Silver-coated pentaprism finder; split-image microprism exposure read-out, rapid wind lever and shutter release button acting as focusing screen (8 interchangeable screens); 95% of picture-taking area meter switch. Exposure range : EV 1 -19 (ASA 100, f/1.4), Film speed visible and 0 .97x magnification with 50mm lens at infinity; -0.5 diopter range: ASA 25 - 1600. eyepiece. Information viewfinder shows f / stop, shutter speed and tri Power source Two 1.5V silver oxide batteries (G13); LED's double as colored LED read-out dots. Correction Lens Adaptor M , Magnifier M and battery check lamp. Refconverter M fit the viewfinder frame. Back cover Standard back with memo holder, interchangeable with Mirror and diaphragm Instant return mirror and automatic diaphragm. Magazine Back MX, Dial Data MX for data recording on film . Depth-of-field preview with self-timer lever. Body size 135.5mm x 82.5mm x 49.5mm. Film wind and rewind Ratchet-type rapid wind lever, plastic-tipped for Body weight 495g. -5 SMALLER, BUT BIGGER • Bigger Parts ANOTHER PENTAI FIRST! Also amazing is the fact that moving parts • Bigger, Brighter Viewfinder have been strengthened and enlarged. By GALLIUM ARSENIDE As difficult as it is to believe, the view reducing the number of moving parts, it PHOSPHIDE finder of the MX is actually bigger and has been possible to enlarge those brighter than those of the larger, heavier remaining. The die cast body of the MX is PHOTO DIODES cameras. Focusing even in dim light is the toughest designed by Asahi Optical to child's play when working with the date. No wonder it can easily withstand A camera is merely a tool to take pictures. brilliant, Pentax Panoramic Viewfinder. the punishment of 5 fps with the motor This simple fact is often forgotten. If your Image magnification is large, too. The drive unit. pictures are constantly over or nearly life-size image (.97x with 50mm • Bigger in Terms of Reliability underexposed, your camera cannot be lens at infinity) makes it possible to work Every effort has been made to make the considered a very good tool. In this with both eyes open, add ing considerably MX the most reliable camera yet, the regard, the exposure meter can be to viewing comfort. pinnacle of accuracy, consistency, and considered the very heart of any camera. The percentage of visibility is also large. ruggedness. Take the method of coupling This is a point worth considering when Because 95% of the picture-taking area is the ASA, aperture, and shutter speed selecting your next camera. visible, you can compose accurately, settings, for instance. Although other As the first maker to put the exposure knowing exactly what will appear on the cameras make use of nylon cords, minute meter where it belongs, behind the lens of film. The small 5% loss of visibility metal chains, small cables, or gears for the camera, Asahi Optical Company is the compensates for an equal loss of the coupling, the MX utilizes indestructible acknowledged leader in the field of actual picture area which is due to the variable resistors for electrical, not exposure measurement. Thus, it comes as sl ide mount, negative carrier, or printing mechanical, coupling. Because of this, the no surprise that Asahi Optical is easel. coupling of the MX cannot disengage, get responsible for the latest development in Thus, the Pentax MX offers a huge, clogged, wear out, or break. This is only photo diodes. While most manufacturers brilliant viewfinder, with a large image one example of why the MX is bigger in are still in the process of switching from magnification, and a big percentage of the terms of reliability; you will discover CdS cells to the superior Silicon Photo picture-taking area visible.