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FORUMS Sony Cameras, Lenses & Accessories Sony Cameras 
Thread started 11 Sep 2017 (Monday) 07:16
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RX100 II Focus Issue.

 
Russell ­ W. ­ Barnes
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Sep 11, 2017 07:16 |  #1

Hallo all,

My RX100II focussing isn't entirely reliable and I'd like to know if it's me or the camera that's the problem here. I have the focussing set to Single-Shot AF and as I understand it, the image is focussed when the green dot next to the shutter speed indication is solid.

Except sometimes it isn't... Maybe one shot in twenty is duff. And Sod's Law dictates that it's generally a shot I'd never get the opportunity to capture again. Not just low-light, either, but ordinary scenes of decent contrast.

My Canon G12, which the Sony superseded, never, ever failed to get a shot in focus. The two things that put me off going for another Canon G*** are the very slow response time between pressing the tit and exposing the shot, and that the lens cover is too close to the glass, trapping dirt and scratching the front element. I thought Canon would've got on top of this by now.

Anyway, I digress; back to the Sony. It's a lovely, well-made camera and the pics I do take that are in focus, I'm perfectly happy with. But until I resolve this focussing unreliability I just can't trust it. -?

Advice, please?


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Russell W. B. (external link)
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Archibald
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Nov 09, 2017 13:44 |  #2

Wow, old thread and no response.

I have the original RX100 and also have problems with focusing. The camera seems to have a mind of its own, focusing where it wants. It likes to focus on faces. I have tried to turn that feature off, because sometimes I don't want focus there, and sometimes it is not a real face. But it doesn't seem to change the behavior much, or at all.

Great little camera, but hard to get accurate focus, especially closer up.


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2mnycars
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Nov 18, 2017 20:07 |  #3

I have an RX100-2 and I purchased a used electronic view finder.

When I review exposure data I find shutter speed is too low and camera shake is an issue.

I've had help. I don't know if I should share the source in this forum. Although I'm seldom here now, P M me if you want information


Dave L
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Russell ­ W. ­ Barnes
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Nov 30, 2017 14:21 |  #4

Archibald wrote in post #18492769 (external link)
Great little camera, but hard to get accurate focus, especially closer up.

A reply!! :-D Indeed it is... I use stuff at work like vector network analysers, spectrum analysers and other display test-equipment and I record photographically the results of my tests. But every fourth shot, say, is blurry, and I'm now in the habit of checking each shot immediately I've taken it to see if I need to re-shoot. I makes the job take longer.

I'm shooting on manual, ISO800 typically, hand-held or mini-tripod, 1/40 sec at f4.5, perhaps 600mm from the display. Your description of the camera? My feelings exactly. Trouble is, I don't know if anything commensurate would be any better. Is the focussing hardware unique to Sony or would I be swapping like with like if I went elsewhere?


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Russell ­ W. ­ Barnes
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Nov 30, 2017 14:30 |  #5

2mnycars wrote in post #18499434 (external link)
Although I'm seldom here now, P M me if you want information

Dave,

Many thanks for your reply. I've sent you a PM.


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Russell W. B. (external link)
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Russell ­ W. ­ Barnes
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Post edited 5 months ago by Russell W. Barnes. (2 edits in all)
     
Nov 30, 2017 15:50 |  #6

After much thought, I reckon the flighty nature of the focussing might be addressed by slugging it through software. Is this feasible? Never seen anything from Sony.

What difference does a two metre variation in focussing make at twenty metres distant? Not a lot, I'd say. So why does the RX100 II get its twickers in a nist 'hunting'? Even my little Ixus 750 locks on and stays on without blithering about.


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2mnycars
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Dec 23, 2017 21:16 |  #7

I've sent a response back with a link to a really good post on focusing with the RX100-2

It's on another forum. I'm reluctant to post the link here, in case it's not allowed

Dave


Dave L
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Russell ­ W. ­ Barnes
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Dec 25, 2017 17:32 as a reply to  @ 2mnycars's post |  #8

Dave,

Many thanks for that - I'll take a look. In the meantime, I've had success with the manual focussing in conjunction with the peaking level. Takes me back to shooting trains and setting the focus on my Pentax MX on a bit of fence, or plant, or someting else adjacent to where I wanted the moving train to be in focus when it passed.


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RX100 II Focus Issue.
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