brusby
Well-known
Assuming an a accurate measurement of the time it takes for the opening slit between the curtains of a Leica type dual curtain focal plane shutter to pass over an infinitely small point in the center of the 35mm film frame, how close to actual shutter speed would that be? Or conversely how much error should be expected?
I know that inertia affects the curtain travel causing unevenness in speed across the frame. But does anyone know the amount of error likely from this kind of a simple test?
Any other major factors to be considered?
I know that inertia affects the curtain travel causing unevenness in speed across the frame. But does anyone know the amount of error likely from this kind of a simple test?
Any other major factors to be considered?