Olympus UK E-System User Group

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-   -   Focus Point (https://e-group.uk.net/forum/showthread.php?t=21544)

GRAHAMJ 6th July 2012 06:41 AM

Focus Point
 
Good morming people, I have a question about the Focus point on the OMD. In fact 2! Is it possible to change the size to smaller and how do you stop it from moving around the grid when ever it wants to?
I, being a sad person with loads of spare paper and too much time on my hands, have download the manual to read but I must be missing were it is in it.

Many thanks.

Graham

Loup Garou 6th July 2012 11:36 AM

Re: Focus Point
 
I know what you mean. In the Auto mode it reads the full frame but in P, A, S and M modes you can set it manually to what you wish. Go to the Super menu by pressing the button to the right of the hotshoe, choose the focus grid and the central rectangle (if that is what you prefer) by moving the arrow buttons. You'll quickly find out how it works.

StephenL 6th July 2012 12:26 PM

Re: Focus Point
 
Unfortunately, you can't reduce the size of the focus point, except in manual focus magnified view. However, a crumb of comfort is that it seems to be pretty precise on the focus point being the dead centre of the square.

Loup Garou 6th July 2012 01:23 PM

Re: Focus Point
 
I can understand that the focal 'point' grid is a bit big in the auto but why would anyone want to change it in the other modes? I thought the smaller rectangle is quite narrow and you can alter its position in the focus grid to suit your choice.

peak4 6th July 2012 05:09 PM

Re: Focus Point
 
Quote:

Originally Posted by StephenL (Post 175032)
Unfortunately, you can't reduce the size of the focus point, except in manual focus magnified view. However, a crumb of comfort is that it seems to be pretty precise on the focus point being the dead centre of the square.

Oh yes you can, I hadn't realised until it was pointed out to me by Zuiko *chr

If you set Fn2 to multi-use Magnify; press Info and or Fn2 until the green square appears, then hit Info, and you can zoom the green square to different sizes. press info or Fn2 again and it remembers the size even when you change modes.

StephenL 6th July 2012 06:02 PM

Re: Focus Point
 
Unfortunately this doesn't work if you have the histogram or highlight/shadow clippings display, which is how I work.

peak4 6th July 2012 06:15 PM

Re: Focus Point
 
Quote:

Originally Posted by StephenL (Post 175068)
Unfortunately this doesn't work if you have the histogram or highlight/shadow clippings display, which is how I work.

So do I broadly, If I can stand the larger focus area then I just carry on as normal.

If on the other hand I want something more precise, I leave the camera set to histogram for general framing, zooming exposure control etc. but just before firing the shutter, a short press of Fn2 displays the smaller focus area and after release a longer press resumes the histogram display ready for the next shot.

Not ideal perhaps, but the best I've found so far.

PeterBirder 6th July 2012 10:18 PM

Re: Focus Point
 
Quote:

Originally Posted by peak4 (Post 175070)
So do I broadly, If I can stand the larger focus area then I just carry on as normal.

If on the other hand I want something more precise, I leave the camera set to histogram for general framing, zooming exposure control etc. but just before firing the shutter, a short press of Fn2 displays the smaller focus area and after release a longer press resumes the histogram display ready for the next shot.

Not ideal perhaps, but the best I've found so far.

Yes that's what I do. Works OK for me.

Regards

Ross the fiddler 7th July 2012 08:30 AM

Re: Focus Point
 
The other way I get the focus point & size is when I use the touch to focus setting to give me the focus point exactly where I want it & the size can be adjusted at the right hand side slider. After that, I can still use the EVF if I want. The smallest setting (at 14 X) is ideal for photographing birds in trees & concentrating on their eyes.

GRAHAMJ 9th July 2012 07:09 AM

Re: Focus Point
 
Thanks for the help I will try all your ideas out to see which one I prefer.

Many thanks

Graham

ayewing 9th July 2012 10:52 AM

Re: Focus Point
 
Thanks to all who contributed to this most useful thread. This is just the sort of information I am struggling to find in the manual. I am most impressed that it is possible to adjust the size of the focus point - a most useful feature when trying to focus on a small bird and not on a leaf in front or behind it.

Having taken delivery of my OMD a week ago I have sorted out most of the "standard" settings but I think the learning curve will continue for some time as I explore the more subtle capabilities of this remarkable camera.

Archie

StephenL 9th July 2012 11:44 AM

Re: Focus Point
 
To be picky, I'm not sure that this alters the size of the "focus point" at all. After all, the focus point is just that - a point. It will always be in the centre of the box, no matter what size the box is. You cannot adjust the position of that point within the constraints of any of the fixed-size 35 squares, or AF Targets as Olympus calls them (p44/45 of the manual).

What it does do is allows you to aim with more accuracy.

andym 9th July 2012 11:53 AM

Re: Focus Point
 
Quote:

Originally Posted by StephenL (Post 175411)
To be picky, I'm not sure that this alters the size of the "focus point" at all. After all, the focus point is just that - a point. It will always be in the centre of the box, no matter what size the box is. You cannot adjust the position of that point within the constraints of any of the fixed-size 35 squares, or AF Targets as Olympus calls them (p44/45 of the manual).

What it does do is allows you to aim with more accuracy.

Tend to agree with you Stephen.In my mind the focus box is square ,the box you see after magnifying and setting to x14 is oblong which I think is just showing the magnified size.

Ross the fiddler 9th July 2012 02:21 PM

Re: Focus Point
 
Quote:

Originally Posted by StephenL (Post 175411)
To be picky, I'm not sure that this alters the size of the "focus point" at all. After all, the focus point is just that - a point. It will always be in the centre of the box, no matter what size the box is. You cannot adjust the position of that point within the constraints of any of the fixed-size 35 squares, or AF Targets as Olympus calls them (p44/45 of the manual).

What it does do is allows you to aim with more accuracy.

Quote:

Originally Posted by andym (Post 175412)
Tend to agree with you Stephen.In my mind the focus box is square ,the box you see after magnifying and setting to x14 is oblong which I think is just showing the magnified size.

Thanks, I'll have to investigate that further, but it seems to select the birds in the branches better. :confused:

StephenL 9th July 2012 02:35 PM

Re: Focus Point
 
Quote:

Originally Posted by Ross the fiddler (Post 175438)
Thanks, I'll have to investigate that further, but it seems to select the birds in the branches better. :confused:

Perhaps because, by using a smaller box, there's less room for error when aiming. But if you could accurately estimate where the exact centre of any box were, you'd achieve more accurate focussing?

The other possibility, which I've just thought about, is that within any box the camera focusses on the closest object. So by using a smaller box, there's less room for the focus point to wander around.


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