Lenses for 1/2"

[Paul Curtis]

There doesn't seem to be very many lenses (that i can find anyway) aimed at 1/2" HD uses, most seem for SD.

I believe this camera is compatible with 2/3" mounts. So you could use DigiPrimes, but what would the mulitplication factor be? My guesstimate is around 4.8x, so a 5mm digiprime would work out to just under 20mm @ T1.9

So the concept of buying this and renting a set (when needed) would actually get 35mm dof from 20mm upwards.

Or could you use lenses designed for 16mm?

Or am i totally mistaken?

[Nick Hiltgen]

Paul I believe the conversion factor for 2/3 to 1/2 I think is 2:1 (check my math) So a 5mm Digi Prime would be closer to 10mm (in video terms). Now in terms of 35 mm it would be another 2.5:1 which would bring us closer to the 4.8x multiplier. Which puts it closer to a 25mm I believe. But I could be wrong.

Originally Posted by Paul Curtis

I believe this camera is compatible with 2/3" mounts. So you could use DigiPrimes, but what would the mulitplication factor be? My guesstimate is around 4.8x

Originally Posted by Nick Hiltgen

Paul I believe the conversion factor for 2/3 to 1/2 I think is 2:1 (check my math)

It is 1.34x or something around according Sony. For sure. I read it there, so try looking for at their website.

Originally Posted by Leuname Ereh

It is 1.34x or something around according Sony. For sure. I read it there, so try looking for at their website.

It's 1.37x, sorry the inaccurate previous information.

[Paul Curtis]

Leuname, thanks can you tell me where you found this on the sony site?

I assume the 1/2 ccd is 16:9? That makes a difference too (seeing as it's horizontal FOV that im most interested in)

As far as i can tell, the horizontal sizes are

35mm still : 36mm (apparently...)
35 movie : 22.1mm
S16 : 12.5mm (1.76x to 35mm movie)
2/3 16:9 : 9.6mm (2.3x to 35mm movie)

if there's a 1.37 between 2/3 and 1/2 then:

1/2 16:9 : 7.00mm (3.15x to 35mm movie)

Of course i *could* be wrong, can anyone shed some light (pun not intended!) on this?

If im right a 9.5mm prime would be closer to a 30mm in terms of FOV. Which probably indicates that the best source of lenses for this are going to be proper dedicated 1/2" HD lenses and therefore difficult to rent/expensive.

I was/am considering getting the body and renting lenses for specific uses, most of the time a 'normal' lens would be fine but there are times when we'd need something specific. (I also have access to a number of 16mm film lenses anyway)

I can't really see 1/2" being around for long, so i don't really see why anyone would invest in making HD lenses (there are plenty of SD). Anyone know if this would be the case?

That's what would make me think twice about getting one of these: lack of wide, flexible fast lenses for narrative purposes. Im sure they're fantastic for ENG which is obviously their market.

paul

[Michael Devlin]

Fujinon has a nice 1/2" ENG lens which I have on a Sony HDC-X300. See http://www.fujinonbroadcast.com/cgi-...ucts.cgi?p=336

I have been told Canon will be introducing one or more 1/2" HD lenses at NAB, but I have seen nothing official from Canon.

The 19x Canon which ships with the HDC-X300K and is listed as an accessory for the PDW-F350 by Sony (http://bssc.sel.sony.com/Broadcastan...sp=11&id=83382) is not really HD.

[Paul Curtis]

Michael, i will wait and see what NAB brings, although as you say that's an ENG lens, i'd rather cine style.

That HDC-X300 is an interesting box, can i ask what you use it for/record onto? And how is it compared to your H1?

paul

[Simon Wyndham]

The multiplication factor is 1.37. It is on most of the XDCAM HD literature.

[Michael Devlin]

Regarding Paul's question about the X300, we got it to use as a POV camera on a sportfishing boat, although to date we have mostly used the H1 on the boat. I posted elsewhere some comparisons with the H1. The H1 is true 4:2:2 out the HDSDI, while the X300 (and XDCAMHD) is 4:2:0 converted to SMTPE 192M for the HDSDI. The resolution of the H1 seems slightly better (may be a lens issue) but the Sony has much greater lattitude (1.5 to 2.5 stops depending on how you view Sony's DCC (Auto-Knee) function), less vertical smear, better sensitivity and such. I am trading in the X300 as part of acquiring the F350. I need all the lattitude I can get for shooting outdoors in uncontrolled lighting situations and the Sonys perform well there.

[David Mintzer]

Does either model come with a stock lens---or are they sold as bodies only.

[Michael Devlin]

Sony's site describes their products

http://bssc.sel.sony.com/Broadcastan...?m=0&p=2&sp=19


You can find the F350 under Camcorders or under Optical Cameras. You can find the X300 under High Definition.

[Scot Olson]

I just found this new XDCAM HD brochure on this page of the PCI website. If you look on page 17 of the brochure there are 6 new 1/2" lenses listed, 3 each from Canon and Fuji.

Canon
KH20x6.4 KRS
KH21ex5.7 IRSE
KH10ex3.6 IRSE

Fujinon
XS17x5.5BRM/BRD
XS13x3.3BRM/BRD
HS16x4.6BERM/BERD

[Aydin Ozer]

but what would be the differance in between these digilenses and regular primes ?
I almost got all the books there is about HD, but they never go in detail..


im shooting a feature and shallow depth of field is crucial. what would your
take be with sony 350 and lenses ?

[Bill Pryor]

You won't get as shallow a depth of field with any 1/2" chip camera as you do with a 2/3" chip one, regardless of lenses. If that's your major criteria, you might be better off with a 2/3" chip SD camera. Also, all the lenses in this brochure are zoom lenses, not primes.

[Aydin Ozer]

in that case; xl h1 with pro35 would be more suitable for me ?