Tim Dashwood
October 5th, 2005, 03:56 AM
I just spent many hours thoroughly scoping both the DVX100A and the HD100.
You can look at the results in the following quicktime files (advance through frame-by-frame to compare results.)
I also have noted my "wide-latitude," "low-light," and "filmout" settings.
HD100 Gamma and Matrix settings:
http://homepage.mac.com/timdashwood/.Public/HD100-DVX_GAMMA-MATRIX/HD100_GAMMA-MATRIX-Sorenson.mov
DVX100 Gamma Settings:
http://homepage.mac.com/timdashwood/.Public/HD100-DVX_GAMMA-MATRIX/DVX100-GAMMA-Sorenson.mov
DVX100 Colour Matrix Settings:
http://homepage.mac.com/timdashwood/.Public/HD100-DVX_GAMMA-MATRIX/DVX100-MATRIX-Sorenson.mov
Downloadable pdf of 6 of my scene file recipes:
http://homepage.mac.com/timdashwood/.Public/HD100_Scene_File_Recipes1.pdf
JPG of the scene files:
http://homepage.mac.com/timdashwood/.Public/HD100_Scene_File_Recipes1.jpg
Here's my technical matched settings for the three typical DVX100 setups. I got them as close as possible. Please note that these comparisons are based on the DVX100A with a setup of 7.5IRE. The HD100 was also setup with 7.5, but I have confirmed it is only added on the analog output. The 1394 is 0 setup.
HD100 settings to match DVX100 CINELIKE GAMMA and CINELIKE MATRIX:
http://homepage.mac.com/timdashwood/.Public/HD100-TO-DVX_MATCH_SCENE_FILES/DVX_CINELIKE_GAMMA+CINE_MATRIX_MATCH.jpg
HD100 settings to match DVX100 CINELIKE_D GAMMA and CINELIKE MATRIX:
http://homepage.mac.com/timdashwood/.Public/HD100-TO-DVX_MATCH_SCENE_FILES/DVX_CINELIKE_GAMMA_D+CINE_MATRIX_MATCH.jpg
HD100 settings to match DVX100 CINELIKE_V GAMMA and CINELIKE MATRIX:
http://homepage.mac.com/timdashwood/.Public/HD100-TO-DVX_MATCH_SCENE_FILES/DVX_CINELIKE_GAMMA_V+CINE_MATRIX_MATCH.jpg
The colour chart used is a standard GretagMacbeth ColorChecker. I needed a smooth grad to determine "stepping" in the Mpeg compression, so I created the grad card myself in photoshop using a linear grad from absolute black to absolute white. I printed it on a good HP injet photo printer.
Before I started these tests I reset the HD100 to factory defaults and initialized scene file 6 on the DVX. I set the HD100 to DV24PA mode as well, 4x3. The HD100 colour gain was turned off (B&W) and the DVX100A was turned down as much as possible to give me the thinnest line possible on the waveform monitor. The line is much thicker on the DVX100A tests because it can't totally remove saturation, so you are seeing a bit of RGB response.
The HD100 was set to 108% clip to extend the recording latitude, and it seems from the scope results that the DVX100 also records 108% super-white.
Next, I white balanced and set a 18% Gray Card (on angle to light source) to 50IRE for each camera - using the default out-of-box scene files.
This gave me ƒ2.4 for the DVX and ƒ1.4 for the HD100. I had both cameras simultaneously plugged into my analog waveform/vectorscope so I could confirm the digital results via firewire. I set both cameras to 7.5IRE because I'm in North America, but I observed that the DVX100A passed the 7.5 setup through the digital FW cable, but the HD100 does not. I took this into account when I eventually created the DVX match settings.
I then went through all of the gamma combinations I could think of on the DVX and then did all of the colour matrix combinations. On the HD100 I went through a huge amount of combinations of curve settings, but only compared the cine and standard matrix settings to each other.
To determine matched settings for the DVX100A, I brought up the frame grabs for Cinelike, Cinelike_D, and Cinelike_V and determined how to match the shape in the HD100. I then opened the vectorscope frame grabs and tweaked the colour settings to get them as close as possible. It wasn't easy, and my resultant "recipes" are not perfect, but they are close enough to do a multicamera shoot and then only require slight adjustments in post.
It is pretty amazing the depth of control available in the HD100... I didn't even come close to dialing in ALL of the possible combinations, but I think my tests demonstrate the effects of each control well enough to create some cool looks.
I think that I will typically be shooting "old school" style with my wide-latitude setting to capture as much info as possible in my "digital neg" and then leave the colour correction to post production. I confirmed (as reported) that the MPEG compression creates bigger "steps" in luminance in the blacks than in the whites. That is why I increased the "master black" levels in my wide-latitude setting to get the most out of the compression. In this case I would expose for my highlights and squeeze about 8 stops of latitude between 15IRE and 100IRE.
Mac users can open my .mac public folder (timdashwood) and drag the JPEG frame grabs to your own hard drive. The PC guys can either download the iDisk utility or go here (http://homepage.mac.com/timdashwood/public) and download them individually from the HD100-DVX_GAMMA-MATRIX folder.
Tim
You can look at the results in the following quicktime files (advance through frame-by-frame to compare results.)
I also have noted my "wide-latitude," "low-light," and "filmout" settings.
HD100 Gamma and Matrix settings:
http://homepage.mac.com/timdashwood/.Public/HD100-DVX_GAMMA-MATRIX/HD100_GAMMA-MATRIX-Sorenson.mov
DVX100 Gamma Settings:
http://homepage.mac.com/timdashwood/.Public/HD100-DVX_GAMMA-MATRIX/DVX100-GAMMA-Sorenson.mov
DVX100 Colour Matrix Settings:
http://homepage.mac.com/timdashwood/.Public/HD100-DVX_GAMMA-MATRIX/DVX100-MATRIX-Sorenson.mov
Downloadable pdf of 6 of my scene file recipes:
http://homepage.mac.com/timdashwood/.Public/HD100_Scene_File_Recipes1.pdf
JPG of the scene files:
http://homepage.mac.com/timdashwood/.Public/HD100_Scene_File_Recipes1.jpg
Here's my technical matched settings for the three typical DVX100 setups. I got them as close as possible. Please note that these comparisons are based on the DVX100A with a setup of 7.5IRE. The HD100 was also setup with 7.5, but I have confirmed it is only added on the analog output. The 1394 is 0 setup.
HD100 settings to match DVX100 CINELIKE GAMMA and CINELIKE MATRIX:
http://homepage.mac.com/timdashwood/.Public/HD100-TO-DVX_MATCH_SCENE_FILES/DVX_CINELIKE_GAMMA+CINE_MATRIX_MATCH.jpg
HD100 settings to match DVX100 CINELIKE_D GAMMA and CINELIKE MATRIX:
http://homepage.mac.com/timdashwood/.Public/HD100-TO-DVX_MATCH_SCENE_FILES/DVX_CINELIKE_GAMMA_D+CINE_MATRIX_MATCH.jpg
HD100 settings to match DVX100 CINELIKE_V GAMMA and CINELIKE MATRIX:
http://homepage.mac.com/timdashwood/.Public/HD100-TO-DVX_MATCH_SCENE_FILES/DVX_CINELIKE_GAMMA_V+CINE_MATRIX_MATCH.jpg
The colour chart used is a standard GretagMacbeth ColorChecker. I needed a smooth grad to determine "stepping" in the Mpeg compression, so I created the grad card myself in photoshop using a linear grad from absolute black to absolute white. I printed it on a good HP injet photo printer.
Before I started these tests I reset the HD100 to factory defaults and initialized scene file 6 on the DVX. I set the HD100 to DV24PA mode as well, 4x3. The HD100 colour gain was turned off (B&W) and the DVX100A was turned down as much as possible to give me the thinnest line possible on the waveform monitor. The line is much thicker on the DVX100A tests because it can't totally remove saturation, so you are seeing a bit of RGB response.
The HD100 was set to 108% clip to extend the recording latitude, and it seems from the scope results that the DVX100 also records 108% super-white.
Next, I white balanced and set a 18% Gray Card (on angle to light source) to 50IRE for each camera - using the default out-of-box scene files.
This gave me ƒ2.4 for the DVX and ƒ1.4 for the HD100. I had both cameras simultaneously plugged into my analog waveform/vectorscope so I could confirm the digital results via firewire. I set both cameras to 7.5IRE because I'm in North America, but I observed that the DVX100A passed the 7.5 setup through the digital FW cable, but the HD100 does not. I took this into account when I eventually created the DVX match settings.
I then went through all of the gamma combinations I could think of on the DVX and then did all of the colour matrix combinations. On the HD100 I went through a huge amount of combinations of curve settings, but only compared the cine and standard matrix settings to each other.
To determine matched settings for the DVX100A, I brought up the frame grabs for Cinelike, Cinelike_D, and Cinelike_V and determined how to match the shape in the HD100. I then opened the vectorscope frame grabs and tweaked the colour settings to get them as close as possible. It wasn't easy, and my resultant "recipes" are not perfect, but they are close enough to do a multicamera shoot and then only require slight adjustments in post.
It is pretty amazing the depth of control available in the HD100... I didn't even come close to dialing in ALL of the possible combinations, but I think my tests demonstrate the effects of each control well enough to create some cool looks.
I think that I will typically be shooting "old school" style with my wide-latitude setting to capture as much info as possible in my "digital neg" and then leave the colour correction to post production. I confirmed (as reported) that the MPEG compression creates bigger "steps" in luminance in the blacks than in the whites. That is why I increased the "master black" levels in my wide-latitude setting to get the most out of the compression. In this case I would expose for my highlights and squeeze about 8 stops of latitude between 15IRE and 100IRE.
Mac users can open my .mac public folder (timdashwood) and drag the JPEG frame grabs to your own hard drive. The PC guys can either download the iDisk utility or go here (http://homepage.mac.com/timdashwood/public) and download them individually from the HD100-DVX_GAMMA-MATRIX folder.
Tim