Why no focus issues with D5100 or D3100 compared with D7000

Started Oct 28, 2012 | Discussions thread
stuntmonkey
stuntmonkey Senior Member • Posts: 2,734
Re: Why no focus issues with D5100 or D3100 compared with D7000
2

hea wrote:

After reading all comments in B&H and Amazon about these 3 cameras I found almost no issues complaining Back/Bad focus on D3100 and D5100, but lots on D7000.

There are a few reasons why you have to be more careful with the D7000, but there are a number of reasons why the landscape looks the way that it does.

1.) For the most part, D7000 users are sophisticated enough to know that AF calibration is an issue, but not experienced enough to know all of the intricacies of it's operation.

2.) A higher proportion of D3100 and D5100 shooters use the kit lenses only. Since they don't have the ultra-narrow depth of field of the more expensive lenses, it's harder to pick out AF calibration

3.) Detecting a true calibration issue also depends on your shooting style. If you are only shooting landscapes, you might never realize that the calibration is off if the amount is only modest.

4.)There's the psychological aspect of the fact that in a camera where you can't adjust the AF, your subconscious has a vested interest in not finding a problem.

5.) Forums and comments sections aren't scientific samples. Because every commenter is exposed to the opinions of the previous commenter, there is a herding effect that obfuscates the real reason of what is going on.

6.) Also, the comments section in places like Amazon et al is open to abuse and competing companies spreading fear, uncertainty, doubt (FUD) as well as those that do nothing but shill in the positive.

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hea
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