Can a camera technican or eng. help me please?! at DVinfo.net

Michael Krumlauf · August 30th, 2018, 03:34 PM

I am trying to properly set the CCD amplifiers on the head block of my HDW-F900/3 camera. I was able to get the color set to 3200K using a waveform and vectorscope, but, i am getting subtle horizontal lines on overexposed areas which is making me think i am loosing information/dynamic range in the image and the voltage is set to low. What tool can i use to properly set the 3 controls on the head block to the proper place in terms of voltage and then re color balance around those values?

For those wondering why i am doing all of this in the first place, when i received the F900 the amps were set way to high which was giving me unneeded noise in the signal (mostly in underexposed areas) to where 0db was looking like 6 or 9db.

I have to believe there is a skilled camera tech on this board who can come to my rescue. Thanks in advance!

Kurt Franz · October 14th, 2018, 06:49 AM

Michael
Did you ever get this figured out?

Michael Krumlauf · April 23rd, 2019, 02:09 PM

Yeah i did. I found out that there was nothing wrong with the camera and its just artifacts that come with these older cameras when trying to get 10bit out of them. You have to re program the entire line from sensor to HD SDI to get rid of them and its too costly to do.. the cameras were intented for 8bit capture so i just shot HDCAM tape and everything worked out great!

Christopher Young · April 23rd, 2019, 10:21 PM

Off topic I know but that is one of the reasons Sony's humble EX3 was so popular. Even though it is an 8-bit 1920 camera internally the fact that it put out a 422 10-bit SDI signal made it popular to integrate into 10-bit 422 multicam shoots. Unlike HDCam SR with its 422 1920 image HDCam was a bit of awkward format with its internal 1440 image in a much narrower 3.3.1 color space. Not ideal in post production.

https://tapeonline.com/hdcam

Chris Young

August 30th, 2018, 03:34 PM	#1
Michael Krumlauf Regular Crew Join Date: Mar 2006 Location: Denver, CO Posts: 128	Can a camera technican or eng. help me please?! I am trying to properly set the CCD amplifiers on the head block of my HDW-F900/3 camera. I was able to get the color set to 3200K using a waveform and vectorscope, but, i am getting subtle horizontal lines on overexposed areas which is making me think i am loosing information/dynamic range in the image and the voltage is set to low. What tool can i use to properly set the 3 controls on the head block to the proper place in terms of voltage and then re color balance around those values? For those wondering why i am doing all of this in the first place, when i received the F900 the amps were set way to high which was giving me unneeded noise in the signal (mostly in underexposed areas) to where 0db was looking like 6 or 9db. I have to believe there is a skilled camera tech on this board who can come to my rescue. Thanks in advance!

October 14th, 2018, 06:49 AM	#2
Kurt Franz Regular Crew Join Date: Mar 2014 Location: Cleveland, OH Posts: 76	Re: Can a camera technican or eng. help me please?! Michael Did you ever get this figured out?

April 23rd, 2019, 02:09 PM	#3
Michael Krumlauf Regular Crew Join Date: Mar 2006 Location: Denver, CO Posts: 128	Re: Can a camera technican or eng. help me please?! Yeah i did. I found out that there was nothing wrong with the camera and its just artifacts that come with these older cameras when trying to get 10bit out of them. You have to re program the entire line from sensor to HD SDI to get rid of them and its too costly to do.. the cameras were intented for 8bit capture so i just shot HDCAM tape and everything worked out great!

April 23rd, 2019, 10:21 PM	#4
Christopher Young Trustee Join Date: Apr 2008 Location: Sydney Australia Posts: 1,567	Re: Can a camera technican or eng. help me please?! Off topic I know but that is one of the reasons Sony's humble EX3 was so popular. Even though it is an 8-bit 1920 camera internally the fact that it put out a 422 10-bit SDI signal made it popular to integrate into 10-bit 422 multicam shoots. Unlike HDCam SR with its 422 1920 image HDCam was a bit of awkward format with its internal 1440 image in a much narrower 3.3.1 color space. Not ideal in post production. https://tapeonline.com/hdcam Chris Young