E-P5 and "shtter Shock"

Started Oct 6, 2013 | Discussions thread
tt321 Forum Pro • Posts: 13,079
Re: Shock vs. shake

Andy Westlake wrote:

tt321 wrote:

Removing shake, but giving shock a chance to shine, I'd have thought one should place the camera stably on a hard surface, but not screwed down so that whatever that surface is made of does not become the same body, thus increasing the mass.

You could do this, I suppose, but I seriously doubt it'll show anything different to my 'wobbly tripod' tests. You certainly don't need to do it to see mirror shock in SLRs (the whole problem with which is that it doesn't go away, no matter how heavy the tripod), and 'shutter shock' should have exactly the same properties.

Intuitively, there is a difference between mirror swing and shutter shift. The first is not simply up and down but has an element of front/back as well so is 2D rather than 1D motion, which could flex the mirror box for all we know hence removing some of the significance of a tripod. Also, securing through a screw at the bottom of the camera may be more resistant to 1D motion which goes directly through that screw than to bendy 2D motion.

Even with a wobbly tripod, it depends on how wobbly it is and where that wobble is, i.e. what the more securely coupled additional mass is.

I have tried to put my G3 on stone and concrete and this has so far worked badly - no better than hand holding, which is counter-intuitive and opposite what I got from using the same technique with compacts, or using the camera on a tripod. I will need to test more before making any concrete statements though.

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