See the sensor coverage table at http://www.personal-view.com/faqs/gh2-usage/gh2-usage . The 8 mm format matches 720 ETC mode or slightly larger.
Picked up a Cosmicar 12.5mm/1.8, doesnt quite cover my GH2, covers my friends GH4 and looks good, just freehanding it atm, waiting for adapter, but it looks great.
Wanted opinions on the 1.8 zooms,
The computar TV zoom lens, 11-110mm/1.8, is this okay on the GH4 in 4K?
Same with Canon J6 12.5-75mm/1.8
The 11-110 and 12.5-75 mm lenses are for the 2/3" format. They won't cover 4k on the GH4. 1" format lenses will. You can usually guess the format of a TV zoom lens just by looking at the range of focal lengths. Most 1" lenses start at 15-20 mm, e.g. 18-108, 16-160, 15-150, 15-90, 16-100, 16-96, 17-102, 20-100, 22.5-90, 25-100, 25-350, and have maximum apertures between f/1.5 and f/2.3. The 18-108 f/2.5 is a notable exception: it's a 2/3" inch. Fujinon 1" lens models start with C, and Canon 1" lens models start with V. Canon TV-16 lenses are also 1". J is Canon's 2/3". H is Fujinon's 2/3".
I record live performances with Panasonic 100-300 lens and am looking for something of the same or wider focal length range but with motorized zoom. Can someone recommend me a C mount TV lens for that purpose? And is it a wise idea in general? I mean there must be some drawback I'm not aware of, like for instance I don't understand is there a way to have AF on such lens or is it all manual beyond the zoom lever etc
Any 2/3" TV lens will be o.k. on the GH2 in ETC mode, if you can mount it. E.g., 12.5-75 mm lenses are 2/3", but not all of them have mounts that will fit into a C-Mount to Micro Four Thirds adapter. Here's one that will fit: http://www.ebay.com/itm/CANON-TV-ZOOM-LENS-J6x12-12-5-75mm-842909-/222149009139?hash=item33b91cdef3:g:TTgAAOSwnFZXW162 Note how the narrow chromed mount sticks out quite a bit. Here's one that probably wouldn't fit: http://www.ebay.com/itm/PANASONIC-GP-KR202-INDUSTRIAL-CCD-CAMERA-CCTV-w-Toyo-CCTV-Lens-12-5-75mm-F1-8-/181565748943?hash=item2a462976cf:g:7vwAAOSwQJ5URuRn
Is there any lenses like this that can do, for example, 70 to 120mm at f2.8 or faster (so I can use it with the 12.5-75mm instead of one long lens like the 16 to 160mm) ? I've been fooking for something like that for easier portability (especially handheld) ?
Thanks to answer.
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