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Forum: Canon, Nikon, Sony, and Other Camera Brands
03-09-2018, 02:15 PM
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You were not confusing. I understood. I just wanted make the post “stand alone” in case some one did not read the entire thread. :)
Did you need information on the vf displays, viewfinders, metering patterns, types of metering, and exposure automation of the first two F-1 models? They are different than the third model.
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Forum: Canon, Nikon, Sony, and Other Camera Brands
03-09-2018, 11:52 AM
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There are two images in your post. The top image is of a T70 or T50 camera which are consumer/hobbyist models.
The second image is of an F-1 New viewfinder. It is in manual or shutter speed priority mode. The shutter speed is set to 1/60 and the lens is set to f8. The largest diameter of the lens iris is f4. The camera is set to “perfect” exposure. The camera is set for normal(open aperture) metering. The viewfinder information assist light is off.
Other info in the viewfinder:
The lollipop is exactly one stop wide.
The black tick mark on the right is for stop down metering and battery check
The camera has a type “PE” screen installed.
The camera is set to 18% rectangle metering.
The focus aid is split image and microprisim combined.
It is impossible to know what kind of viewfinder is attached.
From conversations with a Canon technical person:
The power and a portion of the mechanism for shutter speed priority operation were placed in the various winder and drives to decrease the size, weight, and internal complexity of the camera. The rational was that only sports and news photographers would use shutter speed priority, and they would have one of the motor drives or the power winder attached. The average hobbyist or non-news/sports professional would only use manual or aperture priority mode.
Only the widest opening of the lens was communicated to the camera from the lens and never the narrowest. Therefore only the bottom red area changed as different lenses were mounted. The three red tick marks near the top represent the most common canon lens values narrowest diameter. They never change as different lenses are mounted.
Some of the latest canon fd series lenses had the ability to communicate the smallest aperture, but no fd camera could read it. I guess that enhancement was scrapped when they moved to autofocus ef lenses.
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Forum: Canon, Nikon, Sony, and Other Camera Brands
03-07-2018, 09:54 AM
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I have both the second and the third F-1 models. The third is my favorite 35mm camera.
With respect to the third model (F-1 New), aperture priority auto exposure is available across ALL viewfinders. However, it is only with the eye level AE finder that the camera selected shutter speed is visible. The speeds are displayed horizontally across the bottom viewfinder with a with a needle pointing the camera chosen speed. The lens aperture, chosen by the user is displayed as a single number to the right of the speed.
With ANY of the non AE finders, pull up the shutter speed dial and tun it to the “A” for aperture priority operation. That is all!
For either manual or shutter speed priority operation, the possible lens apertures are shown in a vertical column on the right side of the VF with a lollipop over the chosen lens opening. Only valid apertures, for that lens, in the non red area, can be selected. The aperture values that are beyond the range of the mounted lens are colored red. A needle moving up and down along the lens opening values indicates a hash of the light value and asa, just like our Pentax Spotmatics. In manual mode, adjust the shutter or lens opening until the lollipop and needle line up for the proper exposure.
For shutter speed priority, one of the motor drives or the power wonder must be attached. A rod, driven by the drive/winder comes up from the drive, internally to the camera, and manipulates the lens iris.
BTW, the third F-1 version has three selectable metering patterns: 2% spot; 18% center of frame; and full frame metering.
---------- Post added 03-07-18 at 08:58 AM ----------
The operation and metering patterns of the first and second models are different than that of the third’s. I’ll write up those tonight.
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