LS300 Focus Anomaly
Yesterday, while shooting at the New York International Auto Show I experienced a strange focus problem. Before leaving I was wondering around shooting some random b-roll. I had my Olympus 12-40mm 2.8 Pro lens on the camera. I was shooting in HD at 50Mb 422. While at the Toyota display I shot the FV2 concept vehicle and experienced a strange loss of focus while zooming out. It only happened with this particular vehicle. The other b-rolls I shot were okay. The lens was set for manual focus.
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Re: LS300 Focus Anomaly
Very strange if the camera is set to manual focus. Auto-focus could get confused by the dark reflections but if those sudden jumps are not from stopping the camera I couldn't say what is happening.
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Re: LS300 Focus Anomaly
As you undoubtedly know, that particular lens has a focus ring that slides forward and back (one of the features that attracted me to it). Forward engages with the camera for auto (sometimes iffy on the LS300).. Sliding it back disengages auto for smoother manual focus.
If the ring was back, then accidentally slid forward while attempting to manual focus, the focus can change awkwardly - I've had that happen several times (clumsy fingers)... That could have been the problem here since it's only the one incident... |
Re: LS300 Focus Anomaly
Checked the focus ring after seeing the focus problem in the LCD. Focus ring was set to manual.
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Re: LS300 Focus Anomaly
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Re: LS300 Focus Anomaly
I've learned that with that lens even a slight forward push while focusing can shift it out of manual... I'm not saying that's what happened, but I honestly don't think it's a JVC issue - I've been using the camera for over a year and have never experienced anything similar - except those few times I blew it with the Olympus 12-40..
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Re: LS300 Focus Anomaly
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