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Redflag
New 900
on Jan 2, 2006 at 12:48:09 pm

Hi there

What are the main,if any,differences between the the old and newer 900,s

And can someone tell me the best shutter angle to get rid of flicker from florescent lights in the US ie 60htz when shooting 25 FPS and 24 FPS and 23.97.

Any other helpful hints!

Thanks



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cow
Paul Thurston
Re: New 900
on Jan 2, 2006 at 3:20:14 pm

Hi,

Where in Tokyo are you? Just curious...

Michael Bravin, Chief Technology Officer of Band Pro wrote some things about the camera in the HD Hi End forum. According to him, it "...is basically the same imaging and processing as the F900. It was necessitated by the international agreements to remove lead (primarily in the solder) from the manufacturing process. The F900 R will be built on the HDW 750/730 chassis so it will be a slight bit shorter and smaller. It will be a bit lighter also."

Flicker from fluorescent tubes is a problem that has some very simple solutions. You can change the ballast of the tubes to an electronic ballast which turns the flicker to 20,000 Hz (flickerless for all practical purposes) or you can change the shutter speed of your camera. For video/HD it would be something like this:

In a 60Hz country (tubes flicker at 60Hz)
Shooting fps speed: 23.98
Shutter speed: 60

Shooting fps speed: 24
Shutter speed: 60

Shooting speed: 25
Shutter speed: 60

Shooting speed: 29.97
Shutter speed: 60

Shooting speed: 30
Shutter speed: 60

Shooting speed: 60
Shutter speed: 60

In a 50Hz country (tubes flicker at 50Hz)
Shooting fps speed: 23.98
Shutter speed: 50

Shooting fps speed: 24
Shutter speed: 50

Shooting speed: 25
Shutter speed: 50

Shooting speed: 29.97
Shutter speed: 100

Shooting speed: 30
Shutter speed: 100

Shooting speed: 60
Shutter speed: 100

Regards,
Paul Thurston





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cow
Michael Brennan
New 900
on Jan 2, 2006 at 5:29:01 pm


It looks like it will use a IT rather than FIT ccd so there is a (technical) difference. It could use 14bit AD rather than 12bit.
In theory it should be slightly better if they haven't gone cheap and not ironed out any bugs.


We'll wait and see.

Summising now...
If they are using the block from the 1500 then with a big increase of ram the camera could do a minute of 1440x1080 60p before downloading to tape.
OK it ain't gonna happen, they'll do that on the SR camcorder first... then in say 2008 it will be available on HDCAM...




Mike Brennan






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Redflag
Re: New 900
on Jan 2, 2006 at 11:53:13 pm

Hi

Iam right in central Tokyo,next to Tokyo bay.I was more wondering about shutter degree,s for shooting 24 and 25 fps with 60htz flouries.

Thanks



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Paul Thurston
Re: New 900
on Jan 3, 2006 at 1:59:18 am

For Film Cameras (and HD cameras too)

To get rid of flicker from fluorescent lights, mercury vapor lights, metal halide additive lights, high pressure sodium lights (street lights), CSI lights, CID lights, non electronic ballast HMI lights and similar AC arc discharge lights, the following shutter angles and speeds are required:

50Hz Country (fluorescent tubes flicker at 50Hz)
fps: 24
Shutter angle: 172.8


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Redflag
Re: New 900
on Jan 3, 2006 at 10:43:36 am

Hi Paul

Thanks alot for your time and help with this.Iam used to 50htz but wasnt so sure about 60htz.

Thanks again,happy new year



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cowcowcow
Paul Thurston
Re: New 900
on Jan 4, 2006 at 11:07:31 pm

Happy new year to you too. How did the shooting go?

-Paul


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Redflag
Re: New 900
on Jan 5, 2006 at 12:22:45 am

Havnt started yet,I,ll fly to the US this sunday for 12 days.

So the F900 has only shutter settings as fraction of seconds eg 1/60th not degree,s like the varicam? not that it matters as long as it does the job

thanks





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morveren
Re: New 900
on Jan 12, 2006 at 9:50:14 pm

Hi
We will be shooting Tokyo in Feb. We are using Lowel Rifas as part of our kit - can we get hold of 100V lamps for these in Tokyo (100V VS 110V) as the standard lamps from the US are 110v so will burn warm...do you have a contact for a lighting supplier in Tokyo we could use? Also what's the average cost for an f900 Weekly hire in Tokyo?
Cheers JAY



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Paul Thurston
Re: New 900
on Jan 13, 2006 at 2:57:40 am

In Western Japan, voltage is 100V 60Hz while Eastern Japan is 100v 50Hz.

http://www.equitech.com/support/worldpwr.html

I would send Lowel an e-mail and ask your questions directly to them.
http://www.lowel.com/contact.html

If that's a bad idea, here is the Lowel Japanese distributor:

Honjo & Company
No.5,4-Chome Koyoucho-Higashi
Higashinada-ku Kobe 658-0031

Phone 81 78 8572151
Fax 81 78 8572171


Honjo & Company
1-7-9,Nishi-Azabu,Minato-Ku
Tokyo 106-0031

Phone 81 3 5411 8841
Fax 81 3 5411 8861

For a Tokyo HDCam rental facility (Sony HDCAM - HDW 750):
http://www.asiahiretokyo.com/

Or try a search at mandy.com
http://www.mandy.com/place/japa.cfm

Regards,
Paul Thurston


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cowcowcow
morveren
Re: New 900
on Jan 13, 2006 at 3:24:06 am

Thanks Paul - appreciate your local knowledge - are you based in Tokyo as a freelance cameraman?
Cheers JAY



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Paul Thurston
Re: New 900
on Jan 13, 2006 at 4:54:33 am

Hi Jay,

I'm actually on the other side of the world, (Santiago, Chile.) But I am available for DP freelance work, if your camera operator doesn't work out.

Regards,
Paul Thurston



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morveren
Re: New 900
on Jan 13, 2006 at 7:53:37 am

Thanks - will do.
Cheers JAY




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Redflag
Re: New 900
on Jan 21, 2006 at 3:39:47 am

Hi there

Just got back to Tokyo from US shoot,all went well with the F900,funny even without the shutter at 24fps there didnt seem to be alot of flicker off florrie lights(I put in 1/60 ofcourse just in case,and shot 1/48th the rest of the time)

Yes iam a DP based in Tokyo,re your questions.I would steer clear of Asia hire to be honest,they arnt based in Tokyo at all but in Bangkok,the address is an answering service and a few people have run into problems eg no camera at all.

Daily hire of a f900 is about $us 1,000 a day,but you,ll run into problems without a local contact.

You,ll be fine with the 100v lamps for your rifa,Japan is 100volts so a 100v lamp wont burn warm.

Thanks again to Paul for the info re shutter speeds





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Redflag
Re: New 900
on Jan 21, 2006 at 3:45:11 am

Sorry misread your message re rifa lamps.!

Yes your 110v lamps will be a bit warm,but not by much,but I guess 100v would be better.The plugs in Japan have no earth pin,so you will need an adaptor from US to Japanese...

And yes western Japan is 60htz and Eastern 50htz,so you will have flicker from florries/TV screens, if you are shooting NTSC in Tokyo.



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