Paul R Johnson
August 28th, 2019, 02:47 PM
I've had a fruitful week. Mainly due too Ryan's posts, I've discovered some old lenses invested in an adaptor and got some useful improvements to my usual way of working.
I mentioned in another topic that I'd got the Canon J13X9 from my old Betacam from the 90s, and the adaptor to mount it on the 750 I got from an Ebay seller from the Ukraine for half the price of the 'official' JVC item. This arrived within the week and I was very pleased to get pretty decent results. no vignetting, and the 2x converter loses a couple of stops of light but gets in amazingly tight. Today, I found the companion to the Betacam in another flight case, this time with a Fujinon 14x9 zoom attached. Subjectively this lens appears identical, but on a test chart towards the edges, black/white contrast lines have green fringing on the inner edges where black meets white. Resolution is also slightly softer - not much, but on the test chart you can see it, but not really differences you can see on images.
best of all I found a rather nice Matte box that I'd never been able to fit to my modern cameras as the tube spacing was (presumably) imperial not metric. On the Canon (but not Fuji) lens were four inserts that the matte box tube adaptor fitted perfectly.
The 1.8X magnification fro the adaptor means the lens on the ⅓" sensor camera is medium at its widest setting and very long at the narrow end, with 2x extra if needed. All the stuff was really just video junk sitting on the shelves, and all I've spent is £125 on the adaptor. I can use the stock ⅓" HD lens for wide shots but the telephoto shots I can now get are going to work well.
I'm going to try it on my post head and longer legs next and see if this is more stable - because very long lenses wobble if you blow on the pan handle - well, almost. I'm wondering about aircraft shots where distance usually means filling the frame difficult. That's for the future.
I mentioned in another topic that I'd got the Canon J13X9 from my old Betacam from the 90s, and the adaptor to mount it on the 750 I got from an Ebay seller from the Ukraine for half the price of the 'official' JVC item. This arrived within the week and I was very pleased to get pretty decent results. no vignetting, and the 2x converter loses a couple of stops of light but gets in amazingly tight. Today, I found the companion to the Betacam in another flight case, this time with a Fujinon 14x9 zoom attached. Subjectively this lens appears identical, but on a test chart towards the edges, black/white contrast lines have green fringing on the inner edges where black meets white. Resolution is also slightly softer - not much, but on the test chart you can see it, but not really differences you can see on images.
best of all I found a rather nice Matte box that I'd never been able to fit to my modern cameras as the tube spacing was (presumably) imperial not metric. On the Canon (but not Fuji) lens were four inserts that the matte box tube adaptor fitted perfectly.
The 1.8X magnification fro the adaptor means the lens on the ⅓" sensor camera is medium at its widest setting and very long at the narrow end, with 2x extra if needed. All the stuff was really just video junk sitting on the shelves, and all I've spent is £125 on the adaptor. I can use the stock ⅓" HD lens for wide shots but the telephoto shots I can now get are going to work well.
I'm going to try it on my post head and longer legs next and see if this is more stable - because very long lenses wobble if you blow on the pan handle - well, almost. I'm wondering about aircraft shots where distance usually means filling the frame difficult. That's for the future.