"focusing question" Tue 02-Nov-10 12:26 AM by dhmiller
I just picked up a D7000 today. I'm using a 70-300 VR II with it. I have it set to Auto focus mode, full time servo, and M/A on the lens (of course). I set the focus point before I start to record video, but once I begin recording, nothing that is not on the same plane as the original focal point stays in focus - there doesn;t appear to be any attempt to adjust or indeed, "auto" focus at all. For example, I am focusing initially on a painting about 10 feet away, then moving slowly to a painting about five feet away. Unless I depress the shitter button again, as I would normally do to fix a focus initially, the second painting is and stays completely out of focus even after a few seconds.
Definetly a new DSLR video user (but not so for camcorder)... but I'd love to get some suggestions or tips on this. And I assume I should use IS on the lens? Tried it both ways but didn;t examine the resulting files carefully, as the focus thing is a showstopper. Thanks much. D
#3. "RE: focusing question" In response to Reply # 2 Tue 02-Nov-10 02:25 AM by dhmiller
Thanks Marc. I've read it word for word, but am not getting focusing to update when I pan/move the camera. Problem is, not really sure what to expect (having only used camcorders in the past) There is no update whatsoever of focus unless I press the shutter half way. Is that the expected behavior? Tried to shoot a short video with my finger on the shutter the entire time, but that didn;t work either. Thanks for any insights. Best Dennis
#5. "RE: focusing question" In response to Reply # 4 Wed 03-Nov-10 01:01 PM by RRRoger
Monterey Bay, US
First thing I did was change the setting for the AE-L/AF-L button to AF-ON. Second, I changed Autofocus/Live view/movie AF to constant. My live view now is now self AutoFocusing and Tracks a moving object when on a Tripod.
#7. "RE: focusing question" In response to Reply # 6
Thanks for the info. I am trying to find settings for different types of scenarios, for example, ones that will allow me to pan the camera across a landscape and retain focus - probably a difficult task. I tried this with the D7000 and a 70 - 300 (newest) lens and even with a very slow pan of my neighborhood, the lens did a lot of searching and the green rectangle in the viewfinder was hard to maintain. I wonder if that is as good as it will get (my old Sony CX 520 camcorder could do this effortlessly... what are the main differences?)
I assume subject tracking would be used for a different scenario.
I wonder if (and when) Nikonians establishes a Video group, we could have a sticky thread that lays out all the best settings for a variety of scenes. Anyone want to start the process? Best, Dennis
#8. "RE: focusing question" In response to Reply # 6
Monterey Bay, US
I used the D7000 with an AF-S Nikkor 28-70 lens today to videograph our church service. I used a tripod, AF-F and face priority. The first part went very well. I could watch the little square track the nearest face without having to move the camera.
Then latter on, the Pastor started getting really animated. He walked back and forth and toward and away. This was handled very well until he also started waving his arms around. The lens AF motor started making noise and the camera could no longer lock on. Perhaps the motion was too much? Or, was it the low/bad light? The Auto ISO was at the max 6400. The 1280x720 picture quality was very good.
I used a stereo boom mic because the Tascam created too much noise. You cannot turn of the in camera amp.
#9. "RE: focusing question" In response to Reply # 8
Interesting. Well yet again, this shows that a $500 camcorder has certain abilities that we aren;t seeing in the DSLR. I'm going to wait another few weeks then make the call on whether to buy a camcorder for an upcoming photo trip I'm taking. Was hoping the D7000 would be both a good back up body to my D700 plus fill my "snapshot" video needs.. and maybe it will, but probably not in all cases. You actually shot the vide at 6400 and it looked okay?? That's a surprise. Dennis
#10. "RE: focusing question" In response to Reply # 9 Mon 08-Nov-10 03:38 AM by RRRoger
Monterey Bay, US
>Interesting. >You actually shot the video at 6400 and it looked okay?? That's a surprise. >Dennis
The D7000 was set for Auto ISO 6400 max. Because of the uneven lighting the monitor showed 4000-6400 most of the time. The frames are very slightly overexposed, but look very good with little grain showing when played back from the original MOV files on my 28" computer monitor.