s1a1om Senior Member  More info | Feb 03, 2018 10:43 | #1 I've always pictured cameras controlling the shutter speed with the use of little electric motors or servos. How was the shutter controlled before electrical components were added to cameras? I envision them using a spring, but I would think that would only allow a single shutter speed? Constructive criticism is always appreciated.
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chrisa Goldmember More info | Feb 03, 2018 13:52 | #2 I thought it was the size of the gap in the curtain as it moved across the opening that controlled the speed.
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Archibald You must be quackers!  More info | Feb 03, 2018 13:58 | #3 chrisa wrote in post #18555590  I thought it was the size of the gap in the curtain as it moved across the opening that controlled the speed. Yeah, that's how focal plane shutters work. Canon R5 and R7, assorted Canon lenses, Sony RX100, Pentax Spotmatic F
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Wilt Reader's Digest Condensed version of War and Peace [POTN Vol 1]  More info Post edited over 5 years ago by Wilt. (3 edits in all) | Feb 04, 2018 09:39 | #4 Before electronic control of shutter speed, there were tiny timer gears. You need to give me OK to edit your image and repost! Keep POTN alive and well with member support https://photography-on-the.net/forum/donate.php
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Cham_001 Senior Member  880 posts Likes: 58 Joined Feb 2009 Location: based between Ruse, Bulgaria & Recife-Brazil More info | Feb 04, 2018 10:17 | #5 Wilt wrote in post #18556051 Before electronic control of shutter speed, there were tiny timer gears. http://www.earlyphotography.co.uk/Images_thumb/sm21a.JPG http://cdn.ipernity.com …49111.6b0cd385.640.jpg?r2 --- "... with a clear perspective - the confusion is clearer ..."
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KingKenny Goldmember  More info | Feb 04, 2018 10:32 | #6 [QUOTE=Wilt;18556051]Before electronic control of shutter speed, there were tiny timer gears. "I don't Know where I am but I'm having a lovely time."
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RDKirk Adorama says I'm "packed."  More info | Feb 14, 2018 08:42 | #7 Wilt wrote in post #18556051 Before electronic control of shutter speed, there were tiny timer gears. http://www.earlyphotography.co.uk/Images_thumb/sm21a.JPG http://cdn.ipernity.com …49111.6b0cd385.640.jpg?r2 Or tiny cams to set the speeds faster than 1/60 (which was the flash sync speed for most 35mm focal plane cameras up into the early 80s). TANSTAAFL--The Only Unbreakable Rule in Photography
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Wilt Reader's Digest Condensed version of War and Peace [POTN Vol 1] More info | Feb 14, 2018 11:23 | #8 [QUOTE=King Kenny;18556085] Wilt wrote in post #18556051 Before electronic control of shutter speed, there were tiny timer gears. Before that the photographer simply removed the lens cap and used a stop watch for timing. Stop watch?! Man, that is a whole lot of bother to time something that you can count. You need to give me OK to edit your image and repost! Keep POTN alive and well with member support https://photography-on-the.net/forum/donate.php
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Archibald You must be quackers! More info | Feb 14, 2018 11:30 | #9 Wilt wrote in post #18563633 Stop watch?! Man, that is a whole lot of bother to time something that you can count. Mannes and Godowsky, developers of Kodachrome, were musicians. They timed their development steps by counting measures of music. A march typically goes by at one measure per second. Canon R5 and R7, assorted Canon lenses, Sony RX100, Pentax Spotmatic F
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RDKirk Adorama says I'm "packed." More info | Feb 15, 2018 08:35 | #10 I wish modern cameras gave us the option of turning on low gear whirr sound for longer shutter speeds. TANSTAAFL--The Only Unbreakable Rule in Photography
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Archibald You must be quackers! More info | Feb 15, 2018 08:53 | #11 RDKirk wrote in post #18564295 I wish modern cameras gave us the option of turning on low gear whirr sound for longer shutter speeds. I doubt there is much demand for that feature! Canon R5 and R7, assorted Canon lenses, Sony RX100, Pentax Spotmatic F
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RDKirk Adorama says I'm "packed." More info Post edited over 5 years ago by RDKirk. | Feb 15, 2018 08:56 | #12 Archibald wrote in post #18564305 I doubt there is much demand for that feature! Well, we have an optional clicks and beeps. TANSTAAFL--The Only Unbreakable Rule in Photography
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gjl711 "spouting off stupid things"  57,721 posts Likes: 4046 Joined Aug 2006 Location: Deep in the heart of Texas More info | Feb 15, 2018 09:05 | #13 s1a1om wrote in post #18555454 I've always pictured cameras controlling the shutter speed with the use of little electric motors or servos. How was the shutter controlled before electrical components were added to cameras? I envision them using a spring, but I would think that would only allow a single shutter speed? Any insight would be appreciated. chrisa wrote in post #18555590 I thought it was the size of the gap in the curtain as it moved across the opening that controlled the speed. The shutter always moves at a fixed speed whether it's 1/80 or 1/8000 and as chrisa points out, the only thing changing is the size of the opening. For a great video, check out this Not sure why, but call me JJ.
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RDKirk Adorama says I'm "packed." More info | Feb 15, 2018 09:43 | #14 gjl711 wrote in post #18564313 The shutter always moves at a fixed speed whether it's 1/80 or 1/8000 and as chrisa points out, the only thing changing is the size of the opening. For a great video, check out this .If you go 'way back, the Speed Graphic cameras (not the Crown Graphic) had both front leaf shutters and a rear focal plane shutter. The focal plane shutter was a long roll of rubberized silk that had a series of openings of different sizes, each size representing a shutter speed. You wound the shutter to set the correct opening for the speed you wanted. TANSTAAFL--The Only Unbreakable Rule in Photography
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RPCrowe Cream of the Crop  More info | Jun 18, 2018 11:44 | #15 RDKirk wrote in post #18564348 If you go 'way back, the Speed Graphic cameras (not the Crown Graphic) had both front leaf shutters and a rear focal plane shutter. The focal plane shutter was a long roll of rubberized silk that had a series of openings of different sizes, each size representing a shutter speed. You wound the shutter to set the correct opening for the speed you wanted. Such ingenuity. http://www.artfuldancer.com …_SpeedGraphic_Shutter.gif YEP! And when shot I using the focal plane shutter, the camera shook like an earthquake was happening. I never used the focal plane shutter so I opted for the Crown Graphic rather than the Speed Graphic. The camera was about a pound lighter. Since I most often shot this behemoth of a camera single handed (with the flash in the other hand) the lighter weight was really quite appreciate See my images at http://rpcrowe.smugmug.com/
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