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Re: [OM] IBIS vs. IBIS It's only a dream.

Subject: Re: [OM] IBIS vs. IBIS It's only a dream.
From: "C.H.Ling" <ch_photo@xxxxxxxxxxxxx>
Date: Sun, 28 May 2017 17:31:08 +0800
I'm looking for a Sony FF for the OM lenses, I believe focus will be much easier with electronic viewfinder (like what I did with VF4 on EP-5) compared with 5D II's optical one. Also, the shutter vibration on 5D II is so high that getting a sharp image on slower shutter is not that easy.

IBIS is not critical for me but I would like a FF with silent shutter and easier to focus. I remember you have a A7, what do you think about it?

C.H.Ling


On 17/05/28 12:18, Moose wrote:


My response repeats a warning about expectations that I've made before:

"It's physics and the relationship between linear dimensions and area.
Making the possibly unwarranted assumption that the two sensors weigh
about the same per area, the FF would weigh four times as much.

Then, for the same amount of correction at the same AoV, that heavier
sensor has to be moved twice as far. Accelerating 4x the mass and then
stopping it over twice the distance, in the same time, is more than 8x
the work. A proper engineer, not me, could tell you what that amounts to.

To match the performance of the E-M5, let alone the better E-M5 II or
even better yet E-M1 II, would require really big, powerful movement
hardware. I wouldn't be surprised if the whole camera shook.

I've made this suggestion to friends who find the idea of FF with IBIS
seductive. Sorry you found out the hard way."

Warning Bell Moose


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