[Kenny Kato]

I can share what I know and hope this will help.

Let’s go over spec of DVCPRO HD format itself.

DVCPROHD (Some say DVCPRO 100) will prefilters the 720p image from the DSP to a recorded size of 960×720.

and 1080i is prefiltered to 1280×1080 for 59.94i
and 1440×1080 for 50i

To maintain compatibility with HDSDI, DVCPRO HD unsamples during playback.

so, as above, it’s not true 1280×720 or 1920×1080 once it is recorded.

let’s talk about HDX900’s 720 to 1080 process.
resolution upsampling is processed at DPR of camera.
This is before prefiltering of VTR section.

How it is upsampled:
1280×720 -> 1920×540 (Odd Frame)
1280×720 -> 1920×540 (Even Frame)

1280×720(1/60sec)x2 image is sampled to 1920×1080(1/30sec).
time duration is merely few lines and it is virtually undetectable.
This is reason why you’ll get 1920x 1080 from HDSDI out.
Connect to HDCAM-SR and you’ll get best possible image from this camera.

When you set to 1080/30P or 24P, upsampled interlace image will be processed in similar way like Sony’s Psf.

Cheers!

[Kenny Kato]

go with IDX E10 batteries https://www.idxtek.com/

[Kenny Kato]

If I may add some info regarding this.

Varicam as you all know got 3 kinds of fundamental Gamma settings.
1: Video Gamma available in Camera Menu
2: Cine Gamma 1 or AKA – Video REC.
3: Cine Gamma 2 or AKA – Film REC.

Some people think Video Gamma is less in Dynamic range but that’s not true and here’s why and I’ll try to explain much simple as I can.

CAM / FILM setting in varicam uses same dynamic range.
what makes different is Video Gamma (in CAM menu) uses conventional video gamma curves. Highlight is compressed by Pre-Knee circuit.

In Cine Gamma (FILM Menu)Pre-knee circuit is not being used, instead it is producing much linear luminance responce as possible.

Video Rec as I mentioned in other thread is for what u see what u get application. same as after Telecine process. U can use any HD monitor.

FILM REC is to transfer for film for best result.(Yes u can still use this for video too if you want, more challenge though)
You need Gamma corrector or monitor with built in fuction.
Oh ya your Waveform will be inaccurate too.
you need to go in to HD monitor with Gamma corrector first then waveform.
It’ll be nice if there is WFM with gamma correction.
You’ll need Light meter for proper exposure.
you’ll need to measure exopsure same way you’ve been doing with Film.

Herez whats happening.

Lets say u set Dymanic level of 600%.

In Video Gamma – CAM MENU, any highlight signal over 110% to 600% is
compressed to narrow area of 100%~110% VTR D-range signal.

In Video Rec – Film Menu, All luminace of 600% signal is compressed evenly and linear to 110% VTR D-Range. And you’ll be able to see compressed 600% signal from VTR as 110% signal.

In Film Rec – Film Menu, pretty much same to VTR D-Range, But different linear compression to make utilization of full 500% to 600% D-range of FILM stocks. This is why Varicam can achieve 11 to 12 stop EV latitude.

This is gonna go circle but IF you shoot in Film Rec, transfer to Film and tarnsfer back to HD, you’ll have same image as Video Rec.(or really close, I guess it depends on Lab).

I hope this helps.

[Kenny Kato]

FILM REC is for transferring to FILM. Monitor u use in field is pretty much useless without Gamma corrector, color and exoposure will not be accurate without it.
What u see is NOT what u’ll get.

FILM LIKE is similar to VIDEO REC in Varicam.
Image is as same as after Telecine process, what u see in normal HD monitor IS WHAT U GET.

[Kenny Kato]

It really depends on Network. I assume this is for final broadcast master?
Acquisition can be almost anything with some restriction.
check out Discover HD guideline for example. They accept 1080i format.

https://www.discoverychannel.ca/_includes/disclaimer/producers_guide/docs/HDSpec.logo.doc

[Kenny Kato]

HDX900 produces better color thnaks its 14 bit processor.
730 is still great camera but no 24P.
I think it’s gonna be a real good competitor of HDW-F900.
I think more people will use HDX900 cz of lower price than F900