B4 HD 2/3 lens test

[Arthur Levy]

Has anyone tested the B4 mount with a 2/3" HD lens? If so, what were the results. Thanks.

Arthur

[Jean Wallez]

With a 2\3 SD zoom also.

[Stephen Williams]

With a 2\3 SD zoom also.

Hi,

You are joking? An SD zoom looks bad enough on an HD camera.

Stephen

[Jean Wallez]

OK, in broadcast they use the same over all diameter in 4:3 and 16:9 so
your lens covers both.
The quality of broadcast lenses has been good for S16 for let say the last
10 years. Before that it would be prudent to have the lens tested for the
required resolution and contrast. Of course this is a general statement as
each individual lens may have suffered some degradation due to
environmental exposure or mechanical stress. That being said we have
probably converted more than one hundred lenses over the years and many
clients are still using them with perfectly good results.
One important consideration about this converter is that I do not have a
source for cable to power the lens from the film camera. The lens has to be
used in a strictly manual mode.

Best regards,

Guy Genin
ZGC Inc.
264 Morris Ave
Mountain Lakes NJ 07046

[Stephen Williams]

The quality of broadcast lenses has been good for S16 for let say the last
10 years.
Best regards,

Guy Genin
ZGC Inc.
264 Morris Ave
Mountain Lakes NJ 07046

Hi Guy,

Interesting point of view, personally I think the quality of all S16 zooms available today are rather poor relative to modern 35mm Zooms.

Stephen

[Jean Wallez]

If it's good for S16,it's good for 2K....

[Stephen Williams]

If it's good for S16,it's good for 2K....

Hi,

It's just the definition & use of the word 'good' we don't agree on. IMO Get away with, would be better.

The best 35mm Zooms are razor sharp & inter-cut perfectly with the latest primes.

If you were saying a 'good' amount of breathing, rather than good breathing characteristics I could agree with you.

Stephen generally likes any lens made by Cooke Williams

[Jean Wallez]

Your solution for shooting 2K: Cooke for 35 ?
A 15X8 SD zoom (8-120mm) is a more realistic solution;some tests can help to open\close eyes.

[Stephen Williams]

Your solution for shooting 2K: Cooke for 35 ?
A 15X8 SD zoom (8-120mm) is a more realistic solution;some tests can help to open\close eyes.

Hi,

I have no solution for Shooting 2K with a Zoom to inter-cut with 4k shot with a Cooke S4 / Zeiss Ultra Prime. That is my whole point, my eyes are open & I regularly perform tests. As Laura from Cooke will confirm I am one of the few users of the Cooke 65sf attachment, my eyes are working.

Supply me with a 15 x 8 SD zoom in a PL mount & I will give you my opinion.

My best

Stephen

[Michael Hastings]

Your solution for shooting 2K: Cooke for 35 ?
A 15X8 SD zoom (8-120mm) is a more realistic solution;some tests can help to open\close eyes.

Koffi:

I have 3 Canon J15ax8 lenses, which were pretty high quality SD from late 90s early 2000s and was quite popular. I would offer one up for experimentation if it is needed.

These lenses were probably close to 15K when new, now go for about $2K on the used market. The 8mm is nice as it is a little wider than than most of the SD zooms that typically started at 9mm.