Organising my gear, I found an intervalometer that came with one of the Aatons. I’ve never used one. I’ve always shot 24 frames per second. So I hooked it up to one of the cameras, and it worked. I assumed that since the camera was set to 24 fps and has a 180º shutter, and at 24 fps the exposure is 1/48 second, that the single frame would be 1/48 second. It was quite noticeably longer. So I looked at the manual. It says the single-frame exposure is ¼ second. Fair enough. My Minolta Autometer IV-F only goes down to 8 fps. If I’m doing the math right, that’s 1/16 second exposure time. Of course I can switch over from CINE to AMBI and input ¼ second.
Let’s say I want to shoot the Sun from the time it rises until the time it sets. Say, one frame per minute for 12 hours (30 seconds running time). Should I set the aperture (f-stop) to the correct exposure at midday? It will be underexposed in the morning and evening, and correctly exposed in the middle. Basically, ‘fade in, correct exposure, fade out’.
Somewhat tangent to your question: I would be careful leaving your camera pointed at the sun. Your lens could have the same effect as a magnifying glass on an ant - you can burn/damage whatever covers the capture surface (film or whatever).
As to your question, I would think if your camera had an “automatic aperature” (like using “shutter speed priority”), this would be ideal for such a series of pictures. You’ll probably still be over exposed during mid-day, but your transitions at morning/evening would be better.
