I have a Yashica FX-3 Super and the external flash is a CS-202 Auto; so there's a graph on the back showing the distances and the ISO settings it should be on. The graph has 1.2m or 4ft and and ISO on 100 or 200, the F-Stop should be 16 or 22 (depending on the ISO) and i'm very confused. But mostly my questions is: If you're under 1.2m or 4ft from the object you're trying to capture, will the flash be too overpowering and make it turn out all white or would i have to change and ISO and F-Stop?
External Flash Distance
- Thread starter emmabee
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- stewart
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exposure is dependant on the distance between the flash and the subject. If at 100 iso the F stop is F16 at 4ft then if you move the flash to 2ft you might have to stop down to F22.
Your camera could be 10 ft away, it would not alter the exposure unless you really move it a long way away and then other factors come into it. As long as your shutter is slow enough for the flash to fire, usually 1/125 on a lot of cameras shuuter speed does not make any difference unless the available light is too intense
stew
Your camera could be 10 ft away, it would not alter the exposure unless you really move it a long way away and then other factors come into it. As long as your shutter is slow enough for the flash to fire, usually 1/125 on a lot of cameras shuuter speed does not make any difference unless the available light is too intense
stew
I'm not familiar with Yashica flashguns, but in all other flash units I've worked with there was usually a choice of two auto settings, which would give you two different apertures to choose from depending on the ISO/ASA film speed. There should be an indication of what the closest and furthest distances you can operate within when set on the auto settings, and as long as you're within these distances the flash should expose correctly under most circumstances.
Check your flash sync shutter speed on the camera. As Stewart has said, it's normally 1/125 or can even be 1/60 sec on some older cameras. Certain models have an 'X' setting on the shutter speed dial.
Assuming your flashgun has a manual setting, you can use a variety of apertures depending on your subject distance as the flash will fire at a fixed output (assuming there's only the one manual setting). There should be a distance scale to calculate from either on the back of the flash or in the instruction manual.
Check your flash sync shutter speed on the camera. As Stewart has said, it's normally 1/125 or can even be 1/60 sec on some older cameras. Certain models have an 'X' setting on the shutter speed dial.
Assuming your flashgun has a manual setting, you can use a variety of apertures depending on your subject distance as the flash will fire at a fixed output (assuming there's only the one manual setting). There should be a distance scale to calculate from either on the back of the flash or in the instruction manual.