Stabilization: does 5-axis translate to 5 stops?

Tom Caldwell wrote:

assaft wrote:

Tom Caldwell wrote:

IBIS might help in stabilising the camera platform but it will do nothing for movement in the subject. Stabilisation might help with a lower shutter speed but if a faster shutter speed is available then stabilisation is less necessary.

In other words IBIS helps most with slow kit zooms in poor light. But it is always useful.

No idea why you put things like that. IBIS is just as effective with fast lenses and with prime lenses. The main thing here is that the combination of a modern 16MP sensor, a fast prime and IBIS enables hand-held photography in almost any light condition (assuming a stative subject). An example is attached below. A prime lens at a wide aperture, ISO 1600, EFL of 90mm, SS of 1/8th handheld. For moving subjects that main concern is obviously motion, so IS is less helpful unless a long FL is employed. For example, if 1/60th is enough for freezing motion then no need to use 1/150th or so when shooting with a lens like the 75/1.8. Noise-wise, this saves 1.5 stops.

Utrecht

Why does the Nocticron at f1.2 have in lens IS? Simply because it can be used stabiised when stopped right down to get more dof. When used at fast shutter speeds in good light I doubt if the Nocticron OIS even wakes up. Obviously IBIS is a great tool to have in the kit but maybe it is not always needed.

For those with shakey hands or those that habitually shoot slow lenses in poor light then IBIS must be everything that they need.

Night shot - good.

I thought my statement was quite clear: "In other words IBIS helps most with slow kit zooms in poor light. But it is always useful."

I assume that you know why IBIS is a distinguishing feature. Stabilizing slow kit zoom lenses is a readily available tech. Stabilizing all prime and zoom lenses (inc. those of other makers) is what makes the difference. So you made a wrong statement and then you withdrew it. As I said, I have no idea why you describe things this way.

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Tom Caldwell