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Old Feb 8, 2010, 11:06 AM   #21
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The XSi isn't quite as good as the T1i, but it's better than the D5000/D3000. What the D5000/D3000 have that the XSi doesn't is better high ISO performance.

If you like the XSi, it may not be available for much longer. That's what I mean ... and that's all that I mean.
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Old Feb 8, 2010, 11:08 AM   #22
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Originally Posted by JimC View Post
The D5000 has a very good Autofocus System (11 point AF with relatively fast AF, similar to the Nikon D90 AF system, since both are using the exact same AF sensor assembly).
Yes, it's better than the AF systems in P&S digicams, and it's better than some dSLR systems of the recent past, but as far as the current crop of dSLRs goes, it isn't very good.
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Old Feb 8, 2010, 11:14 AM   #23
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Quote:
...but as far as the current crop of dSLRs goes, it isn't very good.
Says who?

I've spent some time using one, and I'd strongly disagree. The D5000 AF system is just fine (probably as good as your D90 in real world shooting).
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Old Feb 8, 2010, 11:20 AM   #24
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Originally Posted by JimC View Post
Says who?

I've spent some time using one, and I'd strongly disagree. The D5000 AF system is just fine (probably as good as your D90 in real world shooting).
I'm curious about this as well. It was fairly well established that Nikon stripped focus performance from the D40/D60 both in the point array used AND the processing. The d5000 has a restored focus array but I haven't seen anything on the AF processing and how it stacks up.

So I'm curious, TCAV, if your statements are attributed to anything specific to the d5000 or just the 'son inheriting the sins of the father' so to speak - i.e. the d40/60 had stripped down performance so the d5000 must.
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Old Feb 8, 2010, 11:36 AM   #25
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I've seen some tests showing slightly faster lock times with a D90. But, you have to take those types of tests with a "grain of salt", as algorithms tend to improve with each new generation of camera (and the D5000 has the same AF sensor assembly as a D90 and the D5000 is a newer model, with evidence of improvements in a variety of areas).

I'm concerned that to say something like this could be misleading to potential buyers, which is why I chimed in

Quote:
Remember that you're comparing an entry level dSLR with the best AF performance (Canon T1i) with an entry level dSLR with close to the worst AF performance (Nikon D5000), so there will be some difference, and it's not necessarily related to the lens.
These both have very decent AF systems. IMO, you're just "splitting hairs" if you think otherwise, with lens selection being as important as any other factor for how performance compares.
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Old Feb 8, 2010, 1:36 PM   #26
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From what I've seen, while the AF system in the Nikon D3000/D5000 is an improvement over the D40/D60, and it's still better than the Olympus AF system, but it isn't as good as Canon's or the one in the Pentax K-x or Sony A500/A550. That would put it on par with the Sony A230/A330/A380, I beleive. The single distiction would be any benefit the D3000/D5000 would get from the motors in the lenses, but that isn't always an advantage.

I believe that justifies my statements. Am I wrong?
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Old Feb 8, 2010, 1:40 PM   #27
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From what I've seen, while the AF system in the Nikon D3000/D5000 is an improvement over the D40/D60....
I believe that justifies my statements. Am I wrong?
TCAV - not saying you're wrong, just trying to figure out what you're basing your opinion off of. When you say "from what I've seen" are you talking about actual photos, people's comments or reviews?

I really haven't seen too much in the way of review on the AF system.
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Old Feb 8, 2010, 1:41 PM   #28
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Comments from others, here and elsewhere, and what I've seen for myself.
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Old Feb 9, 2010, 2:51 AM   #29
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Well, I didn't mean to stir anything up here, but maybe I'm glad I did! Getting lots of opinous out there on these now. Thanks guys.
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Old Feb 9, 2010, 3:02 AM   #30
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JM

From personal experience, the canon do AF lock faster then the D5000. When I switch from slr to dslr, I looked at the D5000 before getting my T1i. And recently. I have had the chance to shoot the pentax k-x, and the D5000 does not AF as well as the Pentax either. The pentax k-x is behind the canon in AF also. The D5000 may have 11 AF point, but canon does a better job with just 9 point.
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