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Thread started 03 Mar 2010 (Wednesday) 14:36
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New "Scientific" Auto Focus Test: The Winner Is?

 
tharmsen
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Mar 03, 2010 14:36 |  #1

A new "scientific" auto focus test has been posted online (external link).

The results may surprise you.

I found the tests to be anything but fair.

Read the test results then please check out my Blog (http://digitaldiffract​ion.blogspot.com …ific-auto-focus-test.html (external link)) and read what I have to say about the tests.




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bacchanal
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Mar 03, 2010 14:44 |  #2

I think they're just trying to drive traffic to their website by latching onto the RG tidal wave. They had a similar round of tests during the peak of the mkIII fiasco.

I agree that testing a pro body at default settings is kind of pointless.


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angela6571
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Mar 03, 2010 14:59 |  #3

I dont think anyone can put numbers on AF performance.

All I know is that, logically speaking, if the D3 could really only hit 50%, I dont think so many people would be using it. Additionally, I know for a fact that the 40D does a lot better than 42%...




  
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Tsmith
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Mar 03, 2010 15:18 |  #4

Everybody's got an opinion to solve the solution. Ever seen how different methods people around the web via blogs and their own web sites have hashed out the micro adjustment lens option? So many different scenarios can come into play with an AF system that the AF will never be 100% exact.




  
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PIXmantra
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Mar 03, 2010 16:15 |  #5

For those...

tharmsen wrote in post #9721935 (external link)
A new "scientific" auto focus test has been posted online (external link).

The results may surprise you.

I found the tests to be anything but fair.

Read the test results then please check out my Blog (http://digitaldiffract​ion.blogspot.com …ific-auto-focus-test.html (external link)) and read what I have to say about the tests.

...Still believing in forum-texting, gossip, word-of-mouth, lack of Test Protocol, etc., any results coming from a harder, more structured, numerical/repeatable approach will be very difficult to ingest. :D

These results (except for 1D4) echo very closely what FotoMagazin (in Germany) tested more than a YEAR ago, with 40D, 1D3, 1Ds3, D3 and many other cams... (but their test involved a vehicle running at constant speed, approaching the camera. It was highly numerical, easy to quantify, and very repeatable).

In FotoMagazin tests, the 40D fared better, though... and the 1D3 ruled supreme. (the D3 could not keep up with 1D-series, in terms of burst depth, speed and accuracy, after numerous attempts to configure / tune it).

Of course, the above test would need to be re-run with finely tuned configs., again, so we can all see what all these cams can truly deliver. That part is missing, and would need to be considered. For the moment, it is a good start but... a half-way done test.

Cheers, and thanks,

PIX


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PIXmantra
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Mar 03, 2010 16:23 |  #6

For many months...

bacchanal wrote in post #9721978 (external link)
I agree that testing a pro body at default settings is kind of pointless.

...The exact opposite was the argument of D3 proponents (especially those that, somehow, arrived to the "mathematical" conclusion that it offered superior AF performance with respect the 1D3).

And the very same argument is being offered against the 1D4, which requires (exactly as the 1D3) good tuning to extract all of its juice.

Cheers,

PIX


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bacchanal
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Mar 03, 2010 18:34 |  #7

PIXmantra wrote in post #9722601 (external link)
...The exact opposite was the argument of D3 proponents (especially those that, somehow, arrived to the "mathematical" conclusion that it offered superior AF performance with respect the 1D3).

And the very same argument is being offered against the 1D4, which requires (exactly as the 1D3) good tuning to extract all of its juice.

Cheers,

PIX

No matter how you slice it the "release + focus" setting is a pretty major one to overlook and would certainly have a significant impact these test results.


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tharmsen
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Mar 03, 2010 19:19 |  #8

PIXmantra wrote in post #9722545 (external link)
...Still believing in forum-texting, gossip, word-of-mouth, lack of Test Protocol, etc., any results coming from a harder, more structured, numerical/repeatable approach will be very difficult to ingest. :D

These results (except for 1D4) echo very closely what FotoMagazin (in Germany) tested more than a YEAR ago, with 40D, 1D3, 1Ds3, D3 and many other cams... (but their test involved a vehicle running at constant speed, approaching the camera. It was highly numerical, easy to quantify, and very repeatable).

In FotoMagazin tests, the 40D fared better, though... and the 1D3 ruled supreme. (the D3 could not keep up with 1D-series, in terms of burst depth, speed and accuracy, after numerous attempts to configure / tune it).

Of course, the above test would need to be re-run with finely tuned configs., again, so we can all see what all these cams can truly deliver. That part is missing, and would need to be considered. For the moment, it is a good start but... a half-way done test.

Cheers, and thanks,

PIX

I only ask they would do a realistic test vs. the "default settings". Actually, the 1D4 might be setup ideally for this particular test by default. I know for a fact the D3 isn't though.

One would think that the 1D4 would be the king of the hill in a more diverse test... but that's pure speculation on my part.




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tharmsen
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Mar 03, 2010 19:21 |  #9

bacchanal wrote in post #9723380 (external link)
No matter how you slice it the "release + focus" setting is a pretty major one to overlook and would certainly have a significant impact these test results.

+1

To the point that the entire test is pointless if you don't change that basic setting. Either they didn't know this about the D3 or it's pretty shady to publish such overtly flawed test results and tout them as being "scientific". Sure, the way the test was conducted was scientific but the calibration of the equipment wasn't. It would be like having a drag race between a ZR1 Corvette and a Porsche 911, but forcing the Corvette to stay in 1st gear the entire race. What's the point?




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DarthVader
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Mar 03, 2010 21:31 |  #10

Since they tested it good light ie not somewhat dark, there is no difference whether they put it in Release or Release+Focus...the tester knows what he's doing. Just as any review I don't put much weight on it..regardless it's RG, PopPhoto, or Smuckers. I decide which is the best based on my own test.

tharmsen wrote in post #9723648 (external link)
+1

To the point that the entire test is pointless if you don't change that basic setting. Either they didn't know this about the D3 or it's pretty shady to publish such overtly flawed test results and tout them as being "scientific". Sure, the way the test was conducted was scientific but the calibration of the equipment wasn't. It would be like having a drag race between a ZR1 Corvette and a Porsche 911, but forcing the Corvette to stay in 1st gear the entire race. What's the point?


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ugly_a
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Mar 03, 2010 21:50 |  #11

Haha... there's a lot of pissed off Nikon owners in there.


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tharmsen
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Mar 03, 2010 22:36 |  #12

maverick678 wrote in post #9724413 (external link)
Since they tested it good light ie not somewhat dark, there is no difference whether they put it in Release or Release+Focus...the tester knows what he's doing. Just as any review I don't put much weight on it..regardless it's RG, PopPhoto, or Smuckers. I decide which is the best based on my own test.

Perhaps you are correct that there would be little or no difference in the outcome. I do know that from chatting with D3 owners that regardless of lighting conditions, they feel they get far better performance out of their cameras with this function setting change and giving priority to AF.




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marklewisUK
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Mar 04, 2010 01:37 |  #13

From my experience with Nikons it's perhaps the single most important change to make to the settings. I don't know a single Nikon user who uses release priority.




  
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Anders ­ Östberg
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Mar 04, 2010 07:18 |  #14

I read there is some history of disagreements or quarrel over web sites between RG and the owner of prophotohome, maybe that needs to be taken into account when you read some comments there.


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zincozinco
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Mar 04, 2010 07:42 |  #15

Ahhh this is getting so old the Nay and jay sayers from Nikon and Canon camp are always quarelling about the same things. I have nothing against test sites, I follow them quite alot, but what disturbs me are that a lot of people only becuase they own a Canon Camera it has to be the best, or its a mate of theirs who just got a Nikon he /she is defending the brand to the teeth.


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New "Scientific" Auto Focus Test: The Winner Is?
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