I first bought an A7 for my Zuiko's and it is heaven for manual focus
lenses compared to the 6D which I had before. I don't use focus peaking as
I found it not very reliable, but magnification of the image in your
viewfinder is 'the killer app'. I find it amazing how much precise focusing
helps the IQ of an image.
It has not a silent shutter however, only an electronic first curtain.
Which you shouldn't use on shutter speeds faster then around 1/2000, as you
get unevenly lit exposures.
I upgraded to an A7r2, primarily because I wanted more pixels, IBIS and a
silent shutter (the A7 II has IBIS but no silent shutter). The silent
shutter has the same limitation, and reduces the dynamic range with one
stop. When coming from Canon, you still have plenty left though ;-).
As mentioned by Moose, I can confirm that the IBIS in the A7r2 is no match
for Olys'. I did no elaborate testing, but my impression is that it helps
somewhere between 1-2 stops, depending on subject distance en focal length.
I understand from forums that IBIS on the A7 II is more effective, since
the pixels are larger.
In the end, using zuikos on a OM sized body is great fun, and even with the
adapter ring it remains a compact package.
So go for it! ;-)
2017-05-28 11:31 GMT+02:00 C.H.Ling <ch_photo@xxxxxxxxxxxxx>:
> 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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