teo
Well-known
eee, uhmmm. Sorry for my ignorance, but I don't understand why they souldn't be...😕Sparrow said:SLR? Why are the wheels round given it's a focal-plane shutter
eee, uhmmm. Sorry for my ignorance, but I don't understand why they souldn't be...😕Sparrow said:SLR? Why are the wheels round given it's a focal-plane shutter
teo said:eee, uhmmm. Sorry for my ignorance, but I don't understand why they souldn't be...😕
If it's an SLR with a horizontally-travelling shutter?Sparrow said:Focal plane shutters distort at slow speeds, circles go a bit oval or egg shaped that one looked slow enough the see the effect but doesn’t show it, nice shot by the way
No, I think the effect we're thinking of comes from rather slow-moving large vertical-travel shutters such as Graflexes etc. As the FP slit moves downward, the (inverted image of) the bottom of a horizontally moving object is exposed first, and last for the top. And in the lapse of time for the shutter to travel, the object has moved relative to the film, and appears slanted toward the direction of its movement.Goodyear said:If it's an SLR with a horizontally-travelling shutter?
I’ve seen it from both an M3 and OM1, I assumed it was common but I can’t actually find any examples, perhaps my imaginationDougg said:No, I think the effect we're thinking of comes from rather slow-moving large vertical-travel shutters such as Graflexes etc. As the FP slit moves downward, the (inverted image of) the bottom of a horizontally moving object is exposed first, and last for the top. And in the lapse of time for the shutter to travel, the object has moved relative to the film, and appears slanted toward the direction of its movement.
I think a slow-moving horizontal shutter would slightly compress (horizontally) an object moving opposite to the shutter movement and stretch one moving the same direction.