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No. of autofocus points
If you compare a camera with less autofocus points, say three, with one with eleven does the latter automatically produce sharper images?..

Comments (5)

Linslus wrote:.

If you compare a camera with less autofocus points, say three, withone with eleven does the latter automatically produce sharper images?.

Sharpness has nothing to do with it. More points means a little better tracking on moving subjects..

But, many of us use a single point and recompose and shoot. I have 51 points on the D300 and often only set it to 1 or sometimes a few more, but rarely 51. Then I turn on the lock so it won't change from the one I chose. This is especially true when I'm spot metering and want the spot to be the same as the focus point, or there about. Make sure the camera you're looking at can spot meter. Some entry level cameras can't. To me, that's one of the most important features...

Comment #1

Guidenet wrote:.

Linslus wrote:This is especially true when I'm spot metering andwant the spot to be the same as the focus point, or there about. Makesure the camera you're looking at can spot meter. Some entry levelcameras can't. To me, that's one of the most important features..

One thing I'm not sure about with my D200 is if you choose spot metering will the camera use whichever focus point you select? I assume with centre-weighted it won't, by definition..

Alex.

Http://alexandjustine.smugmug.com/..

Comment #2

Linslus wrote:.

If you compare a camera with less autofocus points, say three, withone with eleven does the latter automatically produce sharper images?.

No. However if you use focus-and-recompose, especially with fast lenses at close distance, you will see a difference in sharpness if you pick the AF point closest to the subject so that you don't have to recompose (or at least, not as much)..

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Comment #3

Alex Leach wrote:.

One thing I'm not sure about with my D200 is if you choose spotmetering will the camera use whichever focus point you select? Iassume with centre-weighted it won't, by definition..

Yes. The selected focus area is used for spot metering..

To add to the answer given to the OP. On a Nikon DSLR and particularly the D80, D40 and D300 the chosen focus area will also be very important when using matrix metering since the exposure is weighted to the light conditions under the active focus sensor..

Chris Elliott.

*Nikon* D Eighty + Fifty - Other equipment in Profile.

Http://PlacidoD.Zenfolio.com/..

Comment #4

Linslus wrote:.

If you compare a camera with less autofocus points, say three, withone with eleven does the latter automatically produce sharper images?.

The number of AF points has no real bearing on how sharp a shot is other than it increases the likelyhood of having your subject in focus. If both cameras obtain the focus you want, sharpness will be determined by other factors..

But the 11 point camera will let you use a focus point closer to where you actually want the focus to be. Using the three point camera and doing a focus-recompose will work most of the time, but the 11 point camera might need less recomposing which can affect sharpness if the DOF is very thing..

Also, cameras with a greater number of AF points are more likely to have better AF systems in general. So focusing should be more accurate and faster to boot. My current camera (Nikon D300) has a 51 point autofocusing system and it is sweet....

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