Home · Register · Search · View Winners · Software · Hosting · Software · Join Upload & Sell

Moderated by: Fred Miranda
Username   Password

  New fredmiranda.com Mobile Site
  New Feature: SMS Notification alert
  New Feature: Buy & Sell Watchlist
  

FM Forums | Canon Forum | Join Upload & Sell

  

Archive 2012 · Servo AF testing
  
 
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #1 · p.1 #1 · Servo AF testing


This link contains an interesting description of a Servo AF test done on Nikon cameras. However, the very same method could be used on Canon cameras as well.
While the test idea is not new nor high tech, it should give some meaningful results for real world shooting scenarios in sports and wildlife photography, and similar.
The discussion that follows the writeup is also worth reading.



Nov 13, 2012 at 11:36 PM
snapsy
Online
• • • •
Upload & Sell: On
p.1 #2 · p.1 #2 · Servo AF testing


I use this test as well, but with my very small dog who has a dark face, making it an a horrific focusing scenario. I haven't tried it on a recent body but with previous tests the only two cameras that produced acceptable hit rates were a D3s and 1D Mark IIn.


Nov 13, 2012 at 11:45 PM
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #3 · p.1 #3 · Servo AF testing


snapsy wrote:
I use this test as well, but with my very small dog who has a dark face, making it an a horrific focusing scenario. I haven't tried it on a recent body but with previous tests the only two cameras that produced acceptable hit rates were a D3s and 1D Mark IIn.


That kinda makes sense.



Nov 14, 2012 at 12:03 AM
Paul_R_Canada
Offline
• •
Upload & Sell: Off
p.1 #4 · p.1 #4 · Servo AF testing


Thanks PetKal, that was a good read and it's a nice simple test anyone can easily do, I love to learn!


Nov 14, 2012 at 12:55 AM
danieljcox
Offline

Upload & Sell: Off
p.1 #5 · p.1 #5 · Servo AF testing


Petcal, thanks for sharing my Blog post on Testing The Nikon D4, D800 & D600 in Predictive AF You are correct that this test is one and the same for Canon in AI Servo. Testing the Nikon D4, D800 & D600 in Predictive AF


Nov 16, 2012 at 02:19 PM
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #6 · p.1 #6 · Servo AF testing


Daniel, thank you for taking the time to document your method.
Canon and Nikon seem to employ the same approach to camera Servo AF, although the algorithm details are probably different.

Welcome to FM forum.

Edited on Nov 16, 2012 at 07:48 PM · View previous versions



Nov 16, 2012 at 02:47 PM
JEFFERY Z71
Offline
• •
Upload & Sell: Off
p.1 #7 · p.1 #7 · Servo AF testing


Great link PetKal...thanks.


Nov 16, 2012 at 02:57 PM
charlespan
Offline
• •
Upload & Sell: Off
p.1 #8 · p.1 #8 · Servo AF testing


This was how I tested the focusing speed of my new 600mm II, a couple of weeks ago. It was easier for me, because we own a fast running small dog; no need to throw balls, he will run flying towards me when I call him:








Nov 16, 2012 at 07:08 PM
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #9 · p.1 #9 · Servo AF testing


Great shots, Charles.


Nov 16, 2012 at 07:48 PM
 

Search in Used Dept. 



Ralph Conway
Online
• • • •
Upload & Sell: Off
p.1 #10 · p.1 #10 · Servo AF testing


Yes! Wow! :-)


Nov 16, 2012 at 07:57 PM
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #11 · p.1 #11 · Servo AF testing


This is how I have been testing AF on all of my cameras as well as lens AF response.
(Handheld 1DX + 400 f/2.8 IS II + 2xTC III)

Edited on Nov 17, 2012 at 01:01 PM · View previous versions



Nov 16, 2012 at 08:03 PM
Ralph Conway
Online
• • • •
Upload & Sell: Off
p.1 #12 · p.1 #12 · Servo AF testing


AF looks to work fine, Peter. Any complaints?


Nov 16, 2012 at 08:22 PM
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #13 · p.1 #13 · Servo AF testing


Ralph, the main problem here with the test methodology is that the test target type is not readily available, therefore, even at best of times the repeat test runs are difficult to arrange, unless one has access to captive birds which is uncommon in itself. Clay pijun thrower would work too.


Nov 16, 2012 at 08:58 PM
danieljcox
Offline

Upload & Sell: Off
p.1 #14 · p.1 #14 · Servo AF testing


Charlespan, wow, that little guy looks like a great Predictive test subject. Certainly is cute and little dogs can be harder than the big ones due to erratic movement. Thanks for sharing. I came in from a day of work and your pictures made me smile.


Nov 16, 2012 at 09:30 PM
charlespan
Offline
• •
Upload & Sell: Off
p.1 #15 · p.1 #15 · Servo AF testing


PetKal wrote:
Ralph, the main problem here with the test methodology is that the test target type is not readily available, therefore, even at best of times the repeat test runs are difficult to arrange, unless one has access to captive birds which is uncommon in itself. Clay pijun thrower would work too.


I was going to say, although Peter is quite good at getting the pijun to behave (I remember a wide angle PIF shot), but I am sure he is not at the level where he can just tell the pijun "fly to me".



Nov 16, 2012 at 09:51 PM
PetKal
Offline
• • • • • • •
Upload & Sell: On
p.1 #16 · p.1 #16 · Servo AF testing



Charles, you are right.........I have spent countless hours waiting and waiting, sometimes it is better, sometimes just nothing wants to fly in the desired manner. However, within several months I do manage to accumulate sufficient data for some kinda assessment.



Nov 16, 2012 at 09:58 PM
charlespan
Offline
• •
Upload & Sell: Off
p.1 #17 · p.1 #17 · Servo AF testing


danieljcox wrote:
Charlespan, wow, that little guy looks like a great Predictive test subject. Certainly is cute and little dogs can be harder than the big ones due to erratic movement. Thanks for sharing. I came in from a day of work and your pictures made me smile.


Thank you Daniel, for your compliments. I just did a couple of runs to get the feel of the AF.

Yours is a much more reliable test, with the scoring system. Excellent approach!



Nov 16, 2012 at 09:59 PM





FM Forums | Canon Forum | Join Upload & Sell

    
 

You are not logged in. Login or Register

Username   Password    Reset password