which pair focus faster ?

[redwine]

Hello,

Base on below pair, which would focus faster ?
Will it be significant enough to be noticeable ?

I am thinking if it make sense to move from D40 to D80/90,
as lenses seems to be much cheaper without the AFS/HSM.


Nikon D40 + Sigma 30mm F1.4
Nikon D80 + Nikon 50mm F1.4

 

[vonlichenstein]

Hello,

Base on below pair, which would focus faster ?
Will it be significant enough to be noticeable ?

I am thinking if it make sense to move from D40 to D80/90,
as lenses seems to be much cheaper without the AFS/HSM.


Nikon D40 + Sigma 30mm F1.4
Nikon D80 + Nikon 50mm F1.4

what does it matter to you, whether it focuses faster? do you shoot sports? if you want fast focusing, get an AF-S lens.

 

[lastboltnut]

Its true to a certain extend, but not entirely true my AFS 18-135 focus is not as fast as the AF 50 f1.8...

if you want fast focusing, get an AF-S lens.

 

[vonlichenstein]

Its true to a certain extend, but not entirely true my AFS 18-135 focus is not as fast as the AF 50 f1.8...

really? mine seems to focus faster. hmmm.

 

[lastboltnut]

Even the new AFS 18-105VR is commented as slow in a review I read. But its a kit lens.

really? mine seems to focus faster. hmmm.

 

[ZerocoolAstra]

either way, I think the difference in focusing time might be only a fraction of a second, eg. 1sec vs 1.7sec. Although it's a 70% difference, to me it's still not that noticeable or important. Unless shooting F1 cars or something Then you need to BBB!!!

 

[redwine]

i like to shoot candid, so fast focusing will be an advantage.

For Nikon D40 + Sigma 30mm F1.4,
the focusing will be thru the lens HSM.

For Nikon D80 + Nikon 50mm F1.4 or F1.8,
it will be thru the body screw drive.


I was thinking whether to get the Sigma ($600) or Nikon ($200).
If the D40+Sigma combo can focus significantly faster,
then it might make sense to pay $400 more.
If the focusing is the same, then i am thinking to upgrade my D40 to D80/90.

 

[Daedalus Trent]

tell you what,

why don't you go to a camera shop and test the lenses out yourself? Thats the best way to determine focusing speed right?