The SMC Tamarack 6x7 H2.8 leaf shutter tans is a multipurpose fens which greatly enhances the picture-taking versatility of the Pentax Bx? interchangeable lens systole.
MOUNTING/USE AS A NORMAL LENS When used without cocking the hens Use 2s a Norms! Lens: After mounting, simply shutter, the SMC Tamarack 6x7 80mm fens torus, set the lens aperture as with other 6x7 functions in the same manner ay any other lenses snd release the comers shutter to toke fully automatic diaphragm SMC TAMARACK the picture, or SMC PENTAX fens, The angle of view produced by its 90mm fora length is sightly Note: The position of the lens’ U/S lever does fess than that obtained with a 50mm fens in no
¥ ian SPEED FLASH seh koa FILLING FLASH, ETC. {Using the lens shutter and the camera shutter jointly} Vi hen tha fens shutter is used jointly with the camera's focal plane shutter, the teal shutter lens entities high speed electronic trash sync between 1/30 and 1/500 sec., 5 must for outdoor portraits requiring fill-in trash, ste. tn addition, flash boobs may also be used with the lens shutter (refer to page 14}. The procedure for using the lens shutter to provide flash sync is as follows, 1.
@ wm Set the shutter speed al the lens shutter by adjusting the lens’ shutter speed ring. Asa, sex the tens aperture and cock the hens shutter by winding the cocking lever tulle in the direction of the arrow. Photo 4, Advance the film and focus. Compose the picture and release the camera shutter button. {The above steps 1 — 5 may be performed in random order.
MULTIPLE EXPOSURES/REDUCED CAMERA SHAKE WITH SINGLE EXPOSURES {Using the teas shutter with the shutter locked opened) Multi pis Exposures: When the camera's focal plane shutter is locked opened snd the lens shutter alone is used to make the exposure, the leaf shutter lens proves extremely convenient for making multiple exposures as the lens shutter can be used independently without advancing the film. The procedure for making multiple exposures is as follows. ame 1.
. Press the camera shutter release button. {This locks the camera shutter opened, and simultaneous closes the tens shutter). . Release the sins shutter either by: a} attaching a cable release to the lens’ cable release socket, Plato 4; or ©) sliding the lens’ L/S fever slowly back toward U 10 the point where it releases. Photo 5, {Let go of the lever so that it springs back to S after the shutter releases} 7. Repeat step 3 and step 6 above for gate additional exposure. B.
USING THE LENS SHUTTER WITH ACCESSORIES Auto Extension Tubes: With both types of shooting, Acts Extensions Tubes nos. 1,2 and 3 may be synchronized for close-up shooting with the lens shutter if used independently, Joint use of the extension tubes is not recommended, however, a5 they wilt nat synchronize property.
Auto Bellows When the auto bellows is used, joint use of the fens shutter and the camera shutter is not recommended as proper synchronization is difficult to obtain, Ho waver, the auto hollows and the lens shutter can be used Together with the camera shutter locked open. The procedure is as follows. 1. Attach both the camera and the teal shutter also to tha Auto Bellows Unit, 2. Crow the end of the double cable release with the red ringed tp into the bellows’ cable release socket.
NOTES ON FLASH PHOTOGRAPHY/PRECAUTIONS electronics Fish * Graph comparing fab smoochy shuns site relation to state speeds and sites movement sn misconducts using the lens shutter, Flash Photography 1. Hook both electronic flash units and flesh burbs to be synchronized with the lens shatter to the lens’ flash terminal and follow the shooting procedure indicated an pages 7 and 8. 2. Electronic Ash units synchronization ot all tens shutter speed settings from 1/30 sec. to 1/500 sec. 3.
Lens mount: Construction: Angle of View: Shutter: Speeds: Diaphragm: Focusing: Flash: Filter Size: Other Features: Size: Weight: Pentax 6x7 inner bayonet 6 elements in 6 groups 525° Opal “G* special SLR shutter 1/30 sec. — 1/500 ses, Fully automatic — 1/22) 0.85m (2.76 feet} to infinity Built-in X flash terminal Accepts 67mm phonetician filters Cable release socket, depth of field preview lever, shutter cocking lever 91 maxima. dia.