Re: Zoom problem
I've noticed the same issue, just to add to the number of observed instances. This servo zoom is worse than any of the least expensive fixed lens camcorders I've used in recent years. It's a DSLR zoom that has been retrofitted with a servo motor. Having said that, this camera is still a tremendous value for the price. I continue to be amazed at the image quality compared to my Sony HVR Z7U and Panasonic HPX 170 (both of which can do a decent servo zoom if you are careful).
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Re: Zoom problem
I agree Lee
It's a small price to pay for all the other features that are good and as long as you know about it you can work around it...certainly doesn't put me off at all. Just for interest, does using the zoom lever on the lens give the same result or is it caused only when using the zoom rocker? I wonder if you also get the same little shift working in manual. When I do zoom it's only from the centre range back to wide and I must admit I cannot see anything untoward on my footage. Still love the EA-50!! Chris |
Re: Zoom problem
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Re: Zoom problem
The image wobble at the start of a zoom or when the zoom changes direction really hit me between the eyes during my very first test shoot. It's like the lens elements shift relative to the sensor as the motor or gearing takes up some slack in the lens mechanism.
The workaround is to slightly 'pre-zoom' before hitting record but this is a pain. Live event camera operators will really struggle using the EA50. Small maximum aperture, very slow zoom speed and this jerky zoom phenomenon mean the otherwise exciting EA50 is let down by a very disappointing lens. At least I can take it off when I've found a better alternative. |
Re: Zoom problem
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I won't be selling this lens, it's a good "allrounder" with a large focal range, I only wish it was a fixed f2.8 lens, that would have been sweet :) |
Re: Zoom problem
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Re: Zoom problem
Hey Joel
Me too ... I have yet to see the issue but apparently it does exist! never had a problem at all so I guess it's simply the way we shoot ...I think Noa said that it's most noticeable when you zoom back from full zoom and I would seldom, if ever, be at full zoom on either camera. The play in the mechanical section of the lens seems to be most noticeable when it's fully extended ..ie: zoomed out at 200mm which would make sense ....if you don't usually operate in that area you probably will never see the problem Chris |
Re: Zoom problem
All very fair comments. Thanks for sharing.
I am disappointed with the lens. Maybe I'm expecting too much. Part of my style for shooting sensitive interviews is to start wide and then zoom in very slowly as the speaker gets into is/her stride. I can't do that with this lens. The kind of live event camera operators I work with don't have the luxury of doing anything in post. What they shoot goes direct to the big screen or is broadcast live. Having bought the camera for its interchangeable power zoom, I expected to be able to zoom out and in at any point in the zoom's range without seeing a shudder in the image. I accept that I am quite fussy though, and being an inexperienced film-maker I need help from my kit to improve my work, not problems I need to work around. I'll stop whining now. I love so many things about this camera, I'll concentrate on those in future. |
Re: Zoom problem
I think more ea50 buyers thought the lens was comparable in operation with a fix lens camera, like a pana ag-ac160, but it isn't. Eventhough that powerzoom is unique for a exchangeable lens (considering better options cost a lot more) the lens has several flaws, one of them also being that inaccurate electronical focusing, it's like feeling in the dark for a light switch.
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Re: Zoom problem
It's a still camera lens with a servo zoom motor. I'm constantly tripped up when switching from other camcorders that I own to the EA50. The zoom and focus rings are reversed. On fixed camcorder and exchangeable lens camcorders focus is always the front ring.
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Re: Zoom problem
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Can you elaborate on the "inaccurate electronic focusing"? I haven't had any issues with auto focus... maybe I am missing understanding.... JC |
Re: Zoom problem
Me neither!!
I have peaking on and the camera focuses perfectly every time .....maybe you are talking about the lens not being parafocal??? At that price no lens would be parafocal unless it has a backfocus ajustment like the JVC HM700 cameras ....If you zoom in tight and then zoom right out to wide it ain't gonna stay in focus until the AF catches up!! Chris |
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Re: Zoom problem
Aha!! So that's actually doing a manual focus pull on the stock lens so it's not electronic which is where the confusion lies..!! Servo zooms seem to have very sloppy focus rings and I'm not really sure if you are also dragging some of the servo linkages when you turn it even if you switch to manual.
I find it so much easier to focus pull on the spot focus function on the LCD ...touch the screen on item 1 then touch the screen on iten two and the camera does it for you!! Chris |
Re: Zoom problem
I've noticed the jerk when changing zoom direction as well. I've tried putting my finger on it to provide some drag... wishful thinking... In the end, I will live with it, as I still think this camera and lens is a great deal... I'm coming from a camera with very little OSS, so I'm just thrilled I can get away with what I can without the tripod... and zoom. It's still a bit like magic to me.
darryl |
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