autofocus problem: hvx200a with 16x9 169HDVSF5X82 Super Fisheye

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domo_arigato

New member
Hey there

I film mainly extreme sports and now i got myself a hvx200a together with this 16x9 .45 fisheye.
before that. I was using a canon gl2 with a raynox 0.3 fisheye. i was running it on autofocus all the time, when using the lens converter, without any problems.

when i use the hvx200a with the 16x9 converter the autofocus is causing some trouble from time to time and i can't figure out the reason.
at first the focus is working propery but if the distance between the camera and the filmed object is increasing, that camera seems to have some problem as the AF jumps to 99 and everything gets unsharp.

anyone has or had the same issues and maybe got a solution for the problem?

thanks in advance

domo
 
I've filmed skateboarding for the past 5 years with a vx1000/century optics fisheye. Never put it on auto focus. A fisheye has such deep depth of feild that even when shooting wide open it's impossible to get something out of focus(unless the everything is out of focus). Just set it to manual, put it close to something and focus on it, and it will keep everything in focus, I promise you.
 
I have been doing some vx1 / century fisheye filming aswell, and I totally agree.
I think you can switch the focus so that it is on the fisheye (or as close as you can get) and get some sharp results, but it doesn't require much dust or crap on the lens to make it look bad, anyways, go with mrbrycels idea.
 
thanks very much. i was simply surprised because i never had those kind of problems with the gl2 but i will try it with manual focus.

thanks again
 
with the 16x9 fisheye on the hvx its going to be a macro focus. what i usually do is try and find some text to focus with(using the hvx's focus enhancing methods). and do you mind doing a screen grab with the 200a and the 16x9 lens and posting it? i'm interested in seeing the difference between the 200 and 200a. thanks.
 
Yes.. Don't use the auto focus on the HVX with the fish. You should be in the macro range for sure. I am with my century fish.


the difference will be noticable in low-light and if you have any lights in the shot that normally would smear. That's something that happens with the fish for sure on my HVX.. Smear and lens flare. I have thought of getting a mattebox or lensshade just for the fish to avoid this problem outdoors.
 
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