Michael Zimmet wrote:
>
> My camera's an OM-1n.
>
> I'm going to be taking some waterfall photos next week. Many of them
> will involve shutter speeds of 1/15 sec. - 1 sec. The camera will, of
> course, be mounted on a tripod for such pictures.
>
> Ideally, I guess I should focus/compose/meter, then lock up the
> mirror, then trip the shutter with a cable release. (Right?)
>
I think it really depends how critical you will be of the results. I've
done quite a lot of waterfalls at slow shutter speeds myself, and most
of the time I do one shot with the mirror locked up and one without.
I've never been able to tell the difference. However, this is with
wide-angle lenses - with a long lens, it might be an idea. Also depends
how firm your tripod is I suppose.
> Or if I'm
> wearing gloves (not that I'll be wearing gloves next week, but I might
> wear gloves when photographing in winter -- and I do sometimes choose
> to photograph waterfalls in winter) it can be somewhat tricky to twist
> the little mirror lock up thingie on the camera.
Solution - wait until the waterfalls are actually frozen, then there's
no need to do long exposures. Sorted!
> Anyway, it's my understanding that shutter speeds of around 1/15 sec -
> 1 sec are where the effects of mirror slap are most pronounced. So I
> was wondering whether the OM-1n has a reputation for being a
> relatively low vibration camera (where neglecting to lock up the
> mirror is probably something I could get away with once in a while)?
There was some talk about this recently, I think. Main trouble is that
you can't pre-fire the aperture, and this can be a source of vibrations
as well. I think that's right anyway - someone'll say if I'm wrong, no
doubt.
Finally about print film - I haven't heard of any print film slower than
100 speed, and I don't think it exists, at least in any kind of easy to
get hold of sort of way. D'you not want to use slides? I shot my first
ever roll of Velvia the other week, and also a roll of Agfa RSX II 50
speed, and I may possibly be a convert to the slower speed.
Hope that helps,
Roger
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