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Archive 2012 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!

  
 
RobDickinson
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p.2 #1 · p.2 #1 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


PDAF has always been less accurate than contrast. Its fast, it can track things, its never been known for accuracy.

now canon can say - new high end SLR and new lenses make it all supergreat! That could easily drive sales of new products.

Doesnt mean the old way was bad or they were short changing the users. Things should get better with improvements, right?



Aug 01, 2012 at 07:50 PM
RobDickinson
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p.2 #2 · p.2 #2 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


Wonder if RC will test some nikor the same way?


Aug 01, 2012 at 07:51 PM
skibum5
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p.2 #3 · p.2 #3 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


RobDickinson wrote:
PDAF has always been less accurate than contrast. Its fast, it can track things, its never been known for accuracy.

now canon can say - new high end SLR and new lenses make it all supergreat! That could easily drive sales of new products.

Doesnt mean the old way was bad or they were short changing the users. Things should get better with improvements, right?


true enough, but as I said sometimes marketing and business guys have no clue about the tech they sell and don;t know what matters and what doesn't, although this would seem brainless, granted

especially to help market the $$$ 24-70 II against the tamron



Aug 01, 2012 at 08:03 PM
skibum5
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p.2 #4 · p.2 #4 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


RobDickinson wrote:
Wonder if RC will test some nikor the same way?


he say he will, that will be interesting, will the D800/D4 match or be left behind? does nikon have a ton or a handful or no lenses that work well like this? did they have it since D700 era or before or still not even with their latest?

if nikon doesn't you also think it could be a big marketing point



Aug 01, 2012 at 08:04 PM
skibum5
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p.2 #5 · p.2 #5 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


Of course there is more to AF than revealed on this test.

The 5D2 center point, in practice, seemed to work better than 50D to me.
And even with old lenses the 5D3 will do more precise 1 shot than the 5D2 in some circumstances, in practice.

And once you get into AI Servo that is a different ball game.



Aug 01, 2012 at 08:07 PM
RobDickinson
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p.2 #6 · p.2 #6 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


Nikon obviously has the focus ring movement sensor on some lenses, how accurate is it, how many nikon shave f5.6 X type focus points?

I think I would suspect AI Servo would benefit from knowing how far the focus ring has moved and with more accuracy



Aug 01, 2012 at 08:11 PM
skibum5
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p.2 #7 · p.2 #7 · Lens Rentals AF test 5D3 vs 5D2 + new vs old lenses!!


RobDickinson wrote:
I think I would suspect AI Servo would benefit from knowing how far the focus ring has moved and with more accuracy


likely although it also depends upon tons and tons more



Aug 01, 2012 at 08:41 PM
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