fujinon 20Xs lens
 

I also have the fujinon 20xs lens and we were going to buy two more and get converters for them all, just to have all the same lens and 4 more times the zoom power. Two questions: first, will that lens work for HD or should I wait for a true 20Xs HD lens? I did scim through the posts, but I am wondering if there is any new advancements since the camera is now out.

Second, if I kept two of the 16X lens that came with the camera and only used the 20xs lens on one of the cameras, what would be the difference in picture quality? (besides the extra zooming)

Thanks,
Wendy

Late into this thread but...


anyone remember Canons pro Hi-8 offerings from the early 90s?. In the UK they were known as EX1 and EX2 Hi, in the US maybe called L1 and L2.

Well they were 1/2" CCD cameras and they had an EF converter in the accessory list, which meant they could use Canon SLR primes and zooms.

Now my thinking is; if that old EF converter can be tooled for a JVC mount and if the dimensions are such that the FFD can be accomodated then it should be possible to access all those Canon SLR family lenses or even those rather nice Sigma APO LD that are out there.

Wouldnt that be nice?

And it get more complicated if comparing to modern DSLR's which have a built in cropping factor of 1.4 x over traditional 35 mm, therefore about 5x compared to a DSLR like the D70, and remember some lenses are only designed for this FOV.

I'd be interested to hear if the results were good resolution wise, because geometry type problems should almost disappear. Not sure about CA.

Nikon Lens
 

Can one post pictures on this forum, I can post some comparitive grabs. We shot the same scene with exactly the same lighting and setup just changed the lens, from standard to nikon with the adapter. The results I guess would be helpfull to those looking at doing this. (Mounting Nikon Lenses)

Yusuf , It would be great to see them. If you can't post, could you email them to me? Thanks.

Lens Pics
 

Hi Micheal,
I posted these three/four days back, I think you have seen them, below nis the link

http://www.dvinfo.net/conf/showthread.php?t=52880

I'm sure Chris could post them for you - I have seen many posts where he offers to do this. I think you can PM him.

Pics
 

I have already done that, with links pls check this in the forum
http://www.dvinfo.net/conf/showthread.php?t=52880

Sorry Guys
 

These are not the frame grabs but the setup, will post these on Saturday.

I know this is an old thread, but I got to it while researching about the HD100 lens and saw this comment. I find it hard to believe normal 2/3" lenses resolve 80-100 lp/mm when Zeiss Digiprimes resolve only 56 lp/mm. I’m sure the Digiprimes will be sharper and better than any 2/3” lenses out there.
Based on this fact, I also find the found 133 lp/mm for the HD100 a weird number. If the 2/3” 1920x1080 Cinealta get the best results with a 56 lp/mm lens, I don’t think the 1280x720 HD100, even if 1/3”, needs almost 3 times more resolution at 133 lp/mm.
Just speculating, but something tells me the numbers in this thread are somewhat off.

BUMP. Just figured I'd revive this. Does anyone have any new reports on using alternate lenses on the HD100? (Not so much the 13x option, but 1/2" lenses or others?)

I've been trying to dig up info on other options myself. There is one I was wondering about, a lens for the GY-X3 and Panasonic AJ-D215 cameras: T14X5.5BRM. It's one of the few native 1/3" lenses I could find. Certainly an older model, but someone out there might have one they could try. The big questions are: does the quality hold up for HD, and is the 1/3" mount the same as the HD100?

MTF (modulation transfer function)
 

The numbers are not off but its the way you use them.
Testing a lens for MTF performance usually involves projecting an image through the lens from a graticle, onto a screen and the MTF is then measured by a sensor.
A figure of 80%-99% (the measured difference between the black and white portion of a line pair)
would be thought of as reasonable measured at the centre.
When people say that the Zeiss resolves only 56 lp/mm this is not strictly true. In actual fact the Zeiss can probably resolve around 200 lp/mm.
The figure of 56 lp/mm only refers to the standard by which HD lenses are measured and , hence the graticle that is used during MTF testing.

Incidentally, the standard for 35mm motion picture lens testing is only 20 lp/mm, However when I was at Optex we used a 40 lp/mm standard.

I hope this makes things a bit clearer.