Why no focus issues with D5100 or D3100 compared with D7000

Started Oct 28, 2012 | Discussions thread
jonrobertp Forum Pro • Posts: 12,875
Re: You can find..

Barry Fitzgerald wrote:

AF complaints on every model of DSLR ever made to varying degrees that is.

Lemon bodies will hit the shelves from every maker that is life and a reality. But it should not be so high in numbers that the market is flooded with iffy bodies.

There are a few other points, average D7k user might spot this..some might not. There are complaints about other Nikon models, but not as many as the D7000. That may or may not reflect the actual situation. Chances are some D7k D3100/5100 users might not even notice issues..some will

There there is the "tolerance" part where users can come to accept things..such as Mira here:


Basically saying what I have all along inconsistency in AF and suggests using live view. I just don't think the D7k is that good for AF after owning 2 of them. Some might accept it..I personally do not. I also noted some mirror vibrations at some shutter speeds causing some blur..which I did not on the D90 separate issues but it did show up for me.

I do hope we get beyond the stage of simply saying the AF is complicated, or just settings, users fault of blaming the lenses, pixel density, or limitations of phase detect AF. It's quite possible your idea of decent AF is a million miles away from mine. D7k is IMHO not that good for AF, and I'm not the first person to suggest that either

The AF on the lil consumer D7K is not that complicated.  It's also not that advanced.  And not rudimentary.  Many were hoping it would be of similiar performance as the 7D...but it is not.  Granted, the 7D is a significant amount more $, and that must be remembered.  Not many buyers of the D7k were expecting it to be like a D3...just closer to compete with the 7D.   It does compete, but loses most of those competions.  It is easier to beat the AF on the 60D, which is priced slighly below the 7D...and which I did not want either.

My ratings...and don't yell too too loudly...:)




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