Single vs. Multi-point Focus
Mar 1, 2018 13:55:08 #
The Villages wrote:
Depending on circumstances, the use of Back Button Focus could also assist with focus.
Villages, HOW in this situation will BBF possibly assist with the focus???
Depending on how it's set up, I could see it helping with the exposure but not the focus???
SS
Mar 1, 2018 14:32:31 #
loosecanon
Loc: Central Texas
JohnSwanda wrote:
Not a marketing gimmick to me. I usually use single point focus, but I move it to what I want to focus on so I don't have to recompose. Obviously, with more focus points it is easier to find one which is in the right place. I have done a little shooting of moving subjects using multiple points, and again, the more focus points, the better that works. In both cases, getting a new camera with more focus points has been a great help in focusing.
Very good and help. Thanks.
Tom (OP)
Mar 1, 2018 18:08:37 #
Retina wrote:
If not for AF and BBF I could never get by with a ... (show quote)
I do the same on my 6D.
Disconnecting the AF from the shutter button and moving it to BB allows me to focus once recompose and then shoot many. If i recompose with a half shutter press which is normal camera setup, the 2nd shot will cause the AF to try to refocus...and havimg recomposed, it will focus on the wrong spot.
Anything that moves, center pt continuous AF and crop to taste :-)
Mar 1, 2018 18:33:03 #
CHG_CANON wrote:
If focus is critical to your work, particularly at... (show quote)
Wonderful image, Paul!
Mar 1, 2018 18:49:11 #
crazydaddio wrote:
90% of time this is fine.
Focus and recompose will not give good results with my 50 or 85mm 1.4 primes at 1.4
The DOF is razer thin and the "recompose" usually means both a slight wavering of my hand position as well as the sensor in the camera will rotate relative to the subject as you move the camera body and change the focus distance.
It means the difference between sharp vs soft eyes in portraits...
Focus and recompose will not give good results with my 50 or 85mm 1.4 primes at 1.4
The DOF is razer thin and the "recompose" usually means both a slight wavering of my hand position as well as the sensor in the camera will rotate relative to the subject as you move the camera body and change the focus distance.
It means the difference between sharp vs soft eyes in portraits...
I've likely observed that problem too, but I rarely shoot at 1.4 with a F/1.4 50mm or wide open with any lens. More likely at f/4 or f/5.6.
Mar 1, 2018 22:57:27 #
TBPJr
Loc: South Carolina
loosecanon wrote:
I'm sure there's an obvious answer to this question. Most of us have cameras whose manufacturers feature as having an ever-expanding number of focus points in newer models. I shoot mainly landscapes and scenic city photos, and I almost always focus upon only the center point, lock focus, recompose, and shoot. So do all those other dozens of focus points mean anything? Are they somehow advantageous?
If your time is limited by changing circumstances, having multiple focus points can let your camera help you get the subject you want in focus; for instance, taking pictures of a gymnastic performance by a group, such as cheerleaders, you would be better off using an AF mode that let the camera select the focus (and it defaults to the closest, usually) from all available focus points or from the selection of them that cover the area where you want the focus (like the general center of a spread-out group). Nature photography with moving subjects like birds or running animals is greatly simplified when you don't have to worry about the focus point while struggling to keep the subject in the frame. As long as you are taking pictures of things that don't change dramatically while you are shooting, single-point will probably work for you; moreover, you can check your results and retake using a different point or a different set of points, or switch AF modes. The multiple points are not as important to you if you limit yourself to static scenes. But even then, there are times where there is not enough contrast or texture at the desired point of focus for AF to work, and expanding the single point to a group of five or nine can make it work.
The other value multiple focus points have to you is that they make your camera more versatile, and thus more appealing to buyers when you are ready to trade.
Mar 1, 2018 23:39:53 #
I never use the focus points. I’ve been focusing and recomposing since 1985 and find it hard to get used to the idea of selecting focus points on the fly.
It seems to me that it would be hard to find a focus point that is exactly where you want it. Unless you move the camera a little and use a chosen focus point then recompose.
Honestly, I have never really understood the focus points and how to use them. I don’t know maybe I should try to use them. I may find that I like the method.
It seems to me that it would be hard to find a focus point that is exactly where you want it. Unless you move the camera a little and use a chosen focus point then recompose.
Honestly, I have never really understood the focus points and how to use them. I don’t know maybe I should try to use them. I may find that I like the method.
Mar 2, 2018 05:10:13 #
Mar 4, 2018 19:25:27 #
Mar 5, 2018 05:20:57 #
Dredoms wrote:
How do you move the focus point on the D7200? Thanks.
All about the D7200 focus point and focus system is in the manual, please download it and read it. http://downloadcenter.nikonimglib.com/en/products/197/D7200.html
Mar 5, 2018 08:50:36 #
Mar 5, 2018 09:13:47 #
geezer7
Loc: Michigan
Dredoms wrote:
How do you move the focus point on the D7200? Thanks.
I have the D7100 which is apparently similar to the D7200. To move the focus point set the focus selector lock to the dot (not L) and then move the focus point using the multi selector. In Live View you can return the focus point to the center by pressing the OK button in the middle of the multi selector. Hope this helps.
Mar 5, 2018 09:19:03 #
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