Camera shake question

[TMR Design]

Since compact's like my A620 have an electronic shutter and not a mechanical one as in DSLR's am I correct in assuming that the DSLR, due to its actual movement of the mirror, is MORE subject to camera shake than the A620?

Will I experience the same camera shake, at the same speeds, with the DSLR as with the A620?

[Jon]

There's only a fairly narrow range where mirror slap makes a difference in camera shake, and that's slower than where your unsteadiness starts kicking in. The rule of thumb 1/focal length (effective focal length) reflects the lever action of the lens shaking as you hand-hold at various shutter speeds.

[TMR Design]

Thanks Jon. On a compact there is no mirror slap and just the human unsteadiness. On the DSLR isn't it compounded by the fact that you have both unsteadiness and mirror slap?

[Jon]

Mirror slap's really only noticeable at between 1/15 and 1/50 or so, and then when you're on a tripod. Not only that, the more massive camera helps dampen its effect. It's far less noticeable than shaky hands.

[Stefan A]

Plus, you can do Mirror lock up on an SLR. I have never tried, but it is available for precisely this concern.

Stefan