Luminous Landscape Forum
Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: PaulSchneider on May 16, 2010, 07:48:55 am
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Hi guys!
I have a little question regarding Schneider Manual Copal lenses. On the shutter time dial there are marks for time and bulb modes. How does one use them?
In a not so well lit interior room I would like to make consistent 4 sec. exposures at say f16 in order to stitch.
How does one do that or do I need an electronic shutter?
Regards
Paul
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If you set it to T, and press the cable release button, the shutter opens. It will close only when you press the release again. For B, the shutter will remain open as long as you keep the release button pressed.
Cheers,
Kumar
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If you set it to T, and press the cable release button, the shutter opens. It will close only when you press the release again. For B, the shutter will remain open as long as you keep the release button pressed.
Cheers,
Kumar
Thank you very much Kumar!
... but since humans aren't perfect clocks, is there any other way to get consistent 4 second exposures other than an electronical shutter?
Regards
Paul
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Thank you very much Kumar!
... but since humans aren't perfect clocks, is there any other way to get consistent 4 second exposures other than an electronical shutter?
Regards
Paul
with a little practice you will be amazed how accurate you can count.... I have never feelt the need for electronical shutter - quit often, if doing exposures between 2-4 sec. I'm so accurate/lucky that the back does not need to make a black calibration (aptus 75) it just beeb's ready after I have closed the shutter.
/adam
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Hi guys!
I have a little question regarding Schneider Manual Copal lenses. On the shutter time dial there are marks for time and bulb modes. How does one use them?
In a not so well lit interior room I would like to make consistent 4 sec. exposures at say f16 in order to stitch.
How does one do that or do I need an electronic shutter?
Regards
Paul
Phasone + backs have a timer build in so you can see the seconds counting on long exposures.
You will have to manual open and shut down the shutter, I always use the T function.
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Hi guys!
I have a little question regarding Schneider Manual Copal lenses. On the shutter time dial there are marks for time and bulb modes. How does one use them?
In a not so well lit interior room I would like to make consistent 4 sec. exposures at say f16 in order to stitch.
How does one do that or do I need an electronic shutter?
Regards
Paul
You could use a stopwatch.....
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You could count "POTATOES"...
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I always just watch the second hand on my wristwatch. But mental counting works pretty well too, once you get the rhythm.
Remember, Time wise - to go from 2 seconds to 4 seconds is only 1 stop. So even if you are a third of a second off, you are less than 1/6th of a stop off exposure wise.
And that buffer gets bigger the longer the exposure. (Not that you shouldn't aim for precision and consistency, just pointing out that it's not the end of the world... with most Neg films, that kind of buffer is PLENTY).
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I use small digital kitchen stopwatches .
Back in the day, we used to have competitions, how long can you count seconds without being off the mark.
I'm proud to say I used to get up to 50 seconds easily .
Much easier to just wait for the beep, though .
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The longer your exposure time is, the less impact a small error in timing will have.
So, if I have a two second exposure time, I prefer to close the lens another stop and go with four seconds. Then I just use the second hand on my wristwatch (or seconds counter on a digital watch) for timing.
Another choice for two seconds is to set the shutter to one second. Make an exposure, recock the shutter, and expose again. But you have to be careful that you do not jostle the camera into a new position.
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You could count "POTATOES"...
I prefer "ELEPHANTS"
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I prefer "ELEPHANTS"
MISSISSIPPI