Used lens Canon J14x8,5B4 IRS at DVinfo.net

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Sony ENG / EFP Shoulder Mounts
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Old January 25th, 2010, 06:57 AM   #1
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Used lens Canon J14x8,5B4 IRS

I have the possibility to buy a used lens, Canon J14x8,5B4 IRS with extender for about $1000.

Is this a 1/2" or 2/3" lens? Is it any good and would it work with HD?
I have a Sony PDW-F330.

Thanks guys!
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Old January 25th, 2010, 08:00 AM   #2
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It's a 2/3 inch lens. You could use it on your 350 with an adaptor, but there's a crop factor of about 1,3. (less wide-angle, more tele)
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Old January 25th, 2010, 08:45 AM   #3
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I assumed it should be a 2/3". It's SVT (Swedish Television) that has some stuff for sale - and I thought the price was quite interesting. But I'm quite sure it would not be a good choice.

Actually, what is the different between HD lenses and non-HD lenses?
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Old January 25th, 2010, 11:22 AM   #4
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Well, I have a Fujinon wide-angle and a Canon 20X tele for my PDW-F350 and both are professional ENG-lenses, non-HD. The sharpness is amazing, I cannot imagine how it could get any better with HD lenses. I spoke to a tv-cameraman the other day, and he thought the HD-hype was more a marketing trick than a real advantage.

I would like to see resolution charts of different videolenses to be able to make an objective comparison, but so far I didn't find any. Canon has published a fantastic book about their photo lenses, called "EF Lens Work III" with all the important data, but they have no such thing for videoglass as far as I know. Pity.
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Old January 25th, 2010, 12:51 PM   #5
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Hey Luc,
It is possible even passable to use an SD lens on an HD camera and not worry too much about resolution. The biggest issue seems to be visible Chromatic Aberration on highlights, for instance you may see colored lines outlining tree branches. Also softness in low light situations or focus problems across the image. Whether this is enough to make you buy the HD glass is up to you and the particular lens you have. Newer SD glass is better for HD than older SD glass
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Old January 25th, 2010, 01:09 PM   #6
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Quote:
Originally Posted by Joachim Ljungquist View Post
Actually, what is the different between HD lenses and non-HD lenses?
That's a very interesting question and one that has been discussed a lot here!
I used the J14x8.5 on an F350 and it was perfectly fine. See http://www.dvinfo.net/forum/sony-xdc...ens-tests.html and other posts.
Steve
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Old January 25th, 2010, 03:34 PM   #7
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Steve: Is that the same lens that I asked about? Would you believe that it's better than the one that is included with the F330K - Canon HD KH19x6.7 lens (VCL-719BXS)?
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Old January 25th, 2010, 03:39 PM   #8
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Definitely the same lens.
Hard to say whether it'd be better than the stock 330 lens. The 330 lens is specifically made for 1/2" which is not a bad thing. On the other hand it's very cheap, whereas the J14x8.5 was probably £5000 or so when it came out - it really was top drawer.
Only thing to do is test.
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Old January 25th, 2010, 04:41 PM   #9
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Originally Posted by Daniel Epstein View Post
Hey Luc,
It is possible even passable to use an SD lens on an HD camera and not worry too much about resolution. The biggest issue seems to be visible Chromatic Aberration on highlights, for instance you may see colored lines outlining tree branches. Also softness in low light situations or focus problems across the image. Whether this is enough to make you buy the HD glass is up to you and the particular lens you have. Newer SD glass is better for HD than older SD glass
I just remembered an test report by Mark Stuart of the PDW-700, where he compares his 5-year old SD Canon J17x7,7 B4 IRDS to the Fujinon HA 18x7,6 BERM that came with the PDW-700 and this was his conclusion: "my old Canon SD lens produced pictures which looked just as sharp to me and chromatic abberation didn't appear to be any worse or better than the HD-badged Fujinon." I tend to believe him, as even in a big projection screen the sharpness of my SD-lenses is amazing. Still, I would like to see some figures or graphs. Too bad Fujinon nor Canon publish this kind of data.
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Old January 25th, 2010, 06:08 PM   #10
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I have been borrowing a friends Canon J15x9.5B4 IRS to use on my PMW-350 with surprisingly good results even with the 2x extender.

The back focus seems to drift off and the edges are not as sharp but for what it is I am surprised.
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Old January 26th, 2010, 01:57 AM   #11
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This developed to a quite interesting thread! Ley the discussion/comparison of HD and SD lenses continue...

Anyhow - the conclusion to my basic question seem to be that the price (actually around $900) is quite good and that I would get a lens with good focus control (compared to my present).
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Old January 26th, 2010, 03:39 AM   #12
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By the way - what 2/3"-to1/2"-adapter would work?
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Old January 27th, 2010, 03:35 AM   #13
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There are different makes of adaptors, amongst which Sony, but I've never tried one, so I cannot answer your question. I don't think it's very critical, as it's only a mechanical thing, no hot shoe.
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