Fastest AF in the TOP Canon series?

John Tan · 5th April 2005

Which telephoto fixed len has the fastest AF?

200 f1.8
300 f2.8 IS
300 f4 IS
400 f5.6

Hi to all, Anyone to share your views / experiences for the above mentioned?

Thanks.
John

jeff49er · 5th April 2005

John

which tok kong lens u r gonna buy now?

nightwolf75 · 5th April 2005

actually the speed of AF is also dependent on the camera too.

jsbn · 5th April 2005

Yep, camera body plays a part as well.

John Tan · 5th April 2005

Originally Posted by jeff49er

John

which tok kong lens u r gonna buy now?

Bo la...just looking around 300 or 400mm only but depend on the real usage.

I had test the 300mm f2.8...it a bit heavy for me as for 300mm f4 is just nice...yet to try on the 400mm.

DaNi3L · 5th April 2005

Oh yeah John, the 400mm f5.6L doesnt have IS with it.

But it AF's faster than the 300 f4L IS IIRC.

jeff49er · 5th April 2005

Originally Posted by John Tan

Bo la...just looking around 300 or 400mm only but depend on the real usage.

I had test the 300mm f2.8...it a bit heavy for me as for 300mm f4 is just nice...yet to try on the 400mm.

Imagine u have the 40mm, u prob have to carry it like an anti tank Cannon

John Tan · 5th April 2005

Originally Posted by nightwolf75

actually the speed of AF is also dependent on the camera too.

I know that too...so let assume we using the same cam and maybe anyone can compare their fixed len with their 70-200 f2.8 as I think most of the photographer holding a fixed telephoto len only. I trying to get it for soccer, football & basketball match. Maybe for hobby - bird shooting with the help of 1.4TC + some degree of cropping(digital zoom) when using range of 300 - 400mm only.

John Tan · 5th April 2005

Originally Posted by jsbn

Yep, camera body plays a part as well.

Any experience from your side?

nightwolf75 · 5th April 2005

Originally Posted by John Tan

I do that so let assume we using the same cam and maybe anyone can compare their fixed len with their 70-200 f2.8 as I think most of the photographer holding a fixed telephoto len only. I trying to get it for soccer, football & basketball match. Maybe for hobby - bird shooting with the help of 1.4TC + some degree of cropping(digital zoom) when using range of 300 - 400mm only.

from ur equipment list in ur sig, i assume u are using a the 1D2? its one of the fastest AF cams in canon's stable, IIRC. (45 AF points, i believe) so, paired up with any L-lens with USM, use AI-focus and combine with the 40fps speed, u shld be able to capture any kind of fast moving subjects.

IS dun really give fast AF, since its function is to prevent blur pics at low shutter speeds.

freelancer · 5th April 2005

Originally Posted by John Tan

Maybe for hobby - bird shooting with the help of 1.4TC + some degree of cropping(digital zoom) when using range of 300 - 400mm only.

When the 1.4x is used, AF speed reduces by around 70% if I remember the right number. Its in the Canon technical publication somewhere.

Helbreath · 5th April 2005

I have tried the 1D II + 300 2.8 IS and the AF speed is the fastest i have ever experience(on the canon system).

Goldenstars08 · 5th April 2005

Lens with IS is fast...

paradigm · 5th April 2005

Hi, hoping that I am not OT over here ... just want to find out how you guys shoot birds? I tried using 75-300mm and ended up it takes forever to focus and even then, the end result is not good. Then I used MF at the 300 mm end and the result is only marginally better ... Wat is the best way if I dun want to spend too much on lens?

Terence · 5th April 2005

Originally Posted by Goldenstars08

Lens with IS is fast...

And anything without is slow eh?

+evenstar · 5th April 2005

Originally Posted by nightwolf75

from ur equipment list in ur sig, i assume u are using a the 1D2? its one of the fastest AF cams in canon's stable, IIRC. (45 AF points, i believe) so, paired up with any L-lens with USM, use AI-focus and combine with the 40fps speed, u shld be able to capture any kind of fast moving subjects.

IS dun really give fast AF, since its function is to prevent blur pics at low shutter speeds.

40fps??? Which cam is that???

ahbeng · 5th April 2005

Originally Posted by nightwolf75

from ur equipment list in ur sig, i assume u are using a the 1D2? its one of the fastest AF cams in canon's stable, IIRC. (45 AF points, i believe) so, paired up with any L-lens with USM, use AI-focus and combine with the 40fps speed, u shld be able to capture any kind of fast moving subjects.

IS dun really give fast AF, since its function is to prevent blur pics at low shutter speeds.

乱乱来，where got 40fps

Adam Goi · 5th April 2005

Originally Posted by +evenstar

40fps??? Which cam is that???

Video camera ...

nightwolf75 · 5th April 2005

Originally Posted by ahbeng

乱乱来，where got 40fps

okie... more accurately
JPEG: 40 shots in Large/Fine (JPEG quality 8)
Low-speed continuous: 3 fps
High-speed continuous: 8.5 fps

happy?

http://www.steves-digicams.com/2004_...mk2_specs.html

megaweb · 5th April 2005

Originally Posted by nightwolf75

(45 AF points, i believe) so, paired up with any L-lens with USM, use AI-focus and combine with the 40fps speed, u shld be able to capture any kind of fast moving subjects.

faster than this cam sia ......

5th April 2005	#1
John Tan Senior Member Join Date: Aug 2004 Location: JRimage Xpress Posts: 5,682	Fastest AF in the TOP Canon series? Which telephoto fixed len has the fastest AF? 200 f1.8 300 f2.8 IS 300 f4 IS 400 f5.6 Hi to all, Anyone to share your views / experiences for the above mentioned? Thanks. John __________________ JRimageXpress.com Last edited by John Tan; 12th April 2005 at 01:28 PM.

5th April 2005	#3
nightwolf75 Moderator Join Date: Dec 2003 Location: in bet MORE diaper changes... Posts: 14,590	actually the speed of AF is also dependent on the camera too. __________________ When did ignorance become a point of view? - Dilbert budget AD/ROM shooter, anyone?

5th April 2005	#13
Goldenstars08 Member Join Date: Nov 2004 Location: Singapore Posts: 1,139	Lens with IS is fast... __________________ Photography first, Food always.

5th April 2005	#2
jeff49er Senior Member Join Date: Apr 2003 Location: Punggol Park Posts: 2,020	John which tok kong lens u r gonna buy now?

5th April 2005	#4
jsbn Senior Member Join Date: Jul 2002 Location: Planet Eropagnis Posts: 2,977	Yep, camera body plays a part as well.

5th April 2005	#6
DaNi3L Member Join Date: Oct 2004 Location: NTU Hall 4 Posts: 584	Oh yeah John, the 400mm f5.6L doesnt have IS with it. But it AF's faster than the 300 f4L IS IIRC.

5th April 2005	#12
Helbreath Member Join Date: Jul 2003 Posts: 856	I have tried the 1D II + 300 2.8 IS and the AF speed is the fastest i have ever experience(on the canon system).

5th April 2005	#14
paradigm Advertiser Join Date: Aug 2004 Posts: 3,524	Hi, hoping that I am not OT over here ... just want to find out how you guys shoot birds? I tried using 75-300mm and ended up it takes forever to focus and even then, the end result is not good. Then I used MF at the 300 mm end and the result is only marginally better ... Wat is the best way if I dun want to spend too much on lens?