Calling all NX5 users

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noddydog
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Joined: Feb 28 2004

I was recently using our NX5 out in Asia... so plenty of light available. But quite often when I was on tight shots, eg I'd be 4-8 metres away from subject but zoomed in to achieve a MCU (head and shoulders), the camera seemed to want to focus on the background, ie whatever was 1+ metres behind the subject.

Often I would manually pull the focus back on to the subject (using AF assist and the focus ring), but within seconds the camera would shift it to the background again. This was despite the subject sitting mostly dead centre and taking up around 40-50% of the frame. So in other words the most obvious place to focus on (as it would do on most cameras I've used).

Now I don't remember the NX5 having this issue on previous trips to Asia, so it could be a fault that has developed while it's been sitting on the shelf here in the UK. But before I conclude that this is a definite fault and try to have it fixed, I thought I'd ask some other users in case this is a foible of the NX5 I haven't noticed until now.

Anyone else encountered this?

Erichus
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Joined: Aug 26 2009

Did you accidently set the Focus-button to Autofocus instead of manual? I have the Z5, which is very similar.

noddydog
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Joined: Feb 28 2004

Sorry I wasn't very clear, most of my shooting is doco style taking place on the fly without me (hopefully) being too obvious, so 95% of the time the camera is in autofocus through necessity.

The problem is that the autofocus wants to lock on the backgrounds rather than the subjects in the centre of frame.

Initially when the NX5 turned up I was very impressed with the autofocus which seemed more accurate than other camcorders I'd used.... but now I'm running into these problems and I'm not sure whether it's a fault that's developed or a characteristic I didn't notice before.

I have to highlight that this is only a problem when I'm zoomed in on a subject (ie somewhere between x15 - x20) and their background (eg trees) is a metre or more behind them. At all other times the autofocus seems to work well.... but with a wider DOF it's hard to be sure.

Perhaps anyone using a NX5 at weddings and encountering similar scenarios will best know if this is inherent in the NX5?

MAGLINK
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Joined: Mar 8 2007

If it is like the Z7 you can change to zone that the autofocus uses, I set my Z7 to zone 2 which was more centre weighted.

noddydog
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Joined: Feb 28 2004

Hi Gary. I'm 98% certain the NX5 doesn't have a zone control. I've never spotted it in the menus and I've just double checked the manual, where there's no apparent mention of it. Where does it reside on the Z7?

Erichus
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Joined: Aug 26 2009

If the subject is in the middle of the Picture, the autofocus will work ok. As soon as the subject is out of center, the autofocus will take the background. There is under "display settings" "marker" the possibility to activate the center Marker. One help would be to stay in the wideangle and iris opening about 4 to 5,6 which will deliver a big DOF.

noddydog
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Joined: Feb 28 2004

Thanks Erichus, yep the subjects are always in the centre. That was the first thing that entered my head and consequently that was the first thing I made sure of.

MAGLINK
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Joined: Mar 8 2007
noddydog wrote:
Hi Gary. I'm 98% certain the NX5 doesn't have a zone control. I've never spotted it in the menus and I've just double checked the manual, where there's no apparent mention of it. Where does it reside on the Z7?

Yes I had a look around and the NX5 doesn't appear to have this function which is a shame as it worked when I had my Z7 as it allowed better exposure and auto focus measurement if I ever used it, I now have totally manual camera's so it's a different ball game now.

Gavin Gration
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Joined: Jul 29 1999

Am I right to think think that you are using the long end of the zoom lens with a wide aperture to create a shallow depth of field?

I haven't used an NX5 so forgive me if I'm wrong but can't you stick it in manual focus and just dab the AF button when the subject moves?

JAC
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Joined: Aug 28 2001

I use a Canon XH A1 to shoot weddings. It's autofocus is very good most of the time. However whenever shooting people outdoors against contrasty foliage (hedges, trees) on a tele. setting the autofocus quite often focuses on the trees behind, same as your NX5. Switching to manual focus is the only solution.