Author Topic: Switching back to AF on the shutter?  (Read 541 times)

David H. Hartman

  • NG Member
  • *
  • Posts: 2316
  • I Doctor Photographs... :)
Re: Switching back to AF on the shutter?
« Reply #15 on: March 25, 2021, 08:05:33 »
On the first cameras this function was implemented on it was too slow to react to movement. I lost quite a few frames back then.Might be better in the latest cameras,,, but just the thought of missing out due to lag is enough to keep me away from using it.

( ...and it even switches automatically between two sets of settings between horizontal and vertical orientations).

From this I believe Ilkka is using the feature I mention. I'm very pleased and find the switch has no discernible lag. If I understand correctly Ilkka is using the feature while photographing figure skating.

Erik,

You might give it (Store by orientation, Focus point) another chance.  :)

Dave

Beatniks are out to make it rich
Oh no, must be the season of the witch!

Ilkka Nissilä

  • NG Member
  • *
  • Posts: 1367
  • You ARE NikonGear
Re: Switching back to AF on the shutter?
« Reply #16 on: March 25, 2021, 10:44:53 »
On the first cameras this function was implemented on it was too slow to react to movement. I lost quite a few frames back then.Might be better in the latest cameras,,, but just the thought of missing out due to lag is enough to keep me away from using it.

I don't remember a significant lag in this feature, but it could be that I don't switch between orientations so quickly as to notice it. I typically lower the camera a bit (if hand held) and switch to the vertical grip (or main grip) and lift the camera up and it's already using the correct points at that point. Maybe if you do very quick switching and not switch between grips then a slight delay might get in your way (it's a good idea to check if the delay is still a problem in your current camera). Anyway this is one of my favorite features as I typically place the focus point in the middle of the upper part of the frame (where the faces are most likely to be) and when switching between orientations, I let the camera do the moving of the focus point (and area mode in some cases) so I don't have to do as much juggling of the focus point manually.


Ilkka Nissilä

  • NG Member
  • *
  • Posts: 1367
  • You ARE NikonGear
Re: Switching back to AF on the shutter?
« Reply #17 on: March 25, 2021, 11:08:01 »
After referring to my D850 manual(s) and the D6 manual(s) it appears that "Custom group area" is a feature of the D6 but not D850.

Right, this is correct.  I'm hoping Nikon would include the D6 AF system in a D850 upgrade. 

Quote
In single point AF I have set my D850 to switch automatically to the last point selected in horizontal or vertical orientation. When I press the AF Sub-selector (joy stick, center switch) my D850 switches from single point AF to Dynamic-area AF (9 points).

I use 9-point dynamic area quite a lot, but I tend to just use the focus area selector to switch between modes rather than programming it to a button. I find it tricky to use the joystick for AF-ON + AF Area Mode, I guess I am too clumsy to use it and accidentally move the focus point around. ;-) I think this is because I'm used to the thumb taking a part of the weight of the camera when shooting.

Quote
Face detection for the D850 appears to be limited to AF-Area Mode, 3D Tracking.

In the D850, in continuous AF, this is the case, although auto area AF may have some built-in sensitivity to faces (it could be better) and in single shot AF mode, group-area AF can also be used to detect faces and prioritise them. I never quite figured this out, but I am always using AF-C so I didn't investigate it further.

In the D6, one can choose to prioritise faces (or not) in 3D tracking, auto-area, and group-area modes and the face priority can be individually turned on or off. In fact for head and shoulders framings it'll focus on the eyes when this feature is activated, but for longer distances it selects the focus points for the whole face.

For the D850 I think my favorite modes are the 9-point dynamic, single point and in low-light I will sometimes use group-area as it seems to function in lower light than single point or dynamic area. For fast action I use 25-point dynamic for close subjects and group-area for distant subjects. But 9-point dynamic could be used for almost everything I shoot. For photographing people who are face towards the camera, I sometimes use 3D tracking but in my experience it sometimes loses the subject if briefly occluded (or turning the face away from the camera's view), so I don't have complete confidence in this mode.

In the D6, there is a bewildering array of options, and I've only figured my way around for some subjects so far. For figure skating I tend to use 11x3 or 7x3 matrix of points in custom group area mode (with face priority). For animals I think my default mode is 9-point dynamic, for small subjects between twigs, single point, for fast bird-in-flight, 25-point dynamic, though since the focus points are a bit bigger in the D6 than the D850, I use 9-point in some situations where I would use 25-point in the past. I sometimes use the custom group-area here also but without eye detection it's less useful for close animal subjects than it is for humans. For long-distance photos, group area (custom and regular) works well. Wildlife activity is greater in the spring and summer here and so I'll get more data on how it works for me in different modes.  Though it might be that new movement restrictions greatly limit my possibilities.

Erik Lund

  • Global Moderator
  • **
  • Posts: 5860
  • Copenhagen
    • ErikLund.com
Re: Switching back to AF on the shutter?
« Reply #18 on: March 25, 2021, 15:34:24 »
I used it for PJ style shooting, quick changing situations during events.
It was useless for me. Sorry.

Also if shooting around 45 degree it was erratic naturally,,, and for up and down  :o :o :o Yes I can give it a try on D850 of course,,,  ;D
Erik Lund

Ilkka Nissilä

  • NG Member
  • *
  • Posts: 1367
  • You ARE NikonGear
Re: Switching back to AF on the shutter?
« Reply #19 on: March 25, 2021, 20:18:51 »
I used it for PJ style shooting, quick changing situations during events.
It was useless for me. Sorry.

It is faster than me moving the point manually. I just tried it and it's much faster than I can turn the camera between orientations. I must be very slow. ;)

Quote
Also if shooting around 45 degree it was erratic naturally,,, and for up and down  :o :o :o Yes I can give it a try on D850 of course,,,  ;D

I generally try to take care to level my shots :)

Yes, when shooting from above in a steep angle, it'll do random things. In such a case I press the center button of the multi-controller to center the point and recover into a manageable state.

David H. Hartman

  • NG Member
  • *
  • Posts: 2316
  • I Doctor Photographs... :)
Re: Switching back to AF on the shutter?
« Reply #20 on: March 28, 2021, 21:55:11 »
Yes, when shooting from above in a steep angle, it'll do random things. In such a case I press the center button of the multi-controller to center the point and recover into a manageable state.

When pointing my D850 straight down I can duplicate this problem, pressing the center button of the multi-controller in both horizontal and vertical orientation corrects the problem. Pointing my D850 straight up does not cause the problem. I note that auto rotate on my cell phone can get confused also.

I've found setting a7, Store by orientation, Focus point fast and accurate, a near total plus with my D850. I'll loose many more shots without than with this feature.

Dave
Beatniks are out to make it rich
Oh no, must be the season of the witch!