AF a7II vs a99

[yoyo35]

Hi, 
Sony is working hard on FE mount actualy. I like the new spec (silent shutter, mirror less, less weight, legacy lenses) but for wildlife photography I must have a fast AF.
I see that the last FW upgrade the af with lea3 adapter. So I test the AF to know if FE mounts can actually replace my a99 for wildlife photography or not.

I do the test with the 24mmf2 Sony/Zeiss, 70-400v2 Sony and 500f4 Sony.
The 24mm works as well as with the a99.
Suppressing the 70-400 is faster as the 500f4 (the a99 and a900 have had a special FW for supporting 500f4 AF).
But globally it's too slow for my practice. In bad conditions the focus doesn't work. 
My conclusion is at the and of the video

I don't know if lea4 is faster. I want to try the lea3 because it is mirror less. But does it change anything? (I have only SSM lenses).

Thanks for watching and if you have comment you are welcome

PS: sorry for my bad English

[Guest all8]

That kind of AF performance from the A99, in packaging more along the lines of the A7, would be pretty interesting.

[Guest Peter Kelly]

I have always found the comparison with AF speed very dependent upon specific conditions and so difficult to compare over a short period.

It's also why I always reserve judgement whenever I hear claims about specific cameras.

 

I remember when the A7 (and A7s particularly) first came out and I happened to call into Wilkinsons while I had my A99 gear (including the best glass) with me.

On that specific day I could point at the same object with either camera and the A7 was at least as quick, which had me scratching my head.

This was the same both in and out of the shop.

 

I couldn't explain it in comparison with other's experience then, or since, other than to believe it was something about the light levels (it was a grey day) and the targets selected.

Ultimately, though, no matter what the purely measured performance might be, I've always found a way to use a camera around any weakness it may have if they offered other benefits of greater importance to me.

After all, AF only came along half way through my experience of photography, so anything is a bonus!