One of the challenges with working with AVCHD is removing pulldown. If you do any kind of ENG work or are on a tight deadline using the GH1 is definitely not for you. You have to do a few things before starting to edit– pull down removal. So if you have a little time on your hands you can use Compressor, VoltaicHD, or Cineform Neoscene to get true 24P. My previous post used Compressor which looked pretty good but there was still some remnant frame jitters and the 1080P looked a little lighter than the original footage that I shot with. So I decided to try out Cineform Neoscene and these were my initial impressions.
- Faster to do pull down than compressor but not by much.
- Gives you the option for realtime editing with the Cineform (MOV) codec
- No left over frames and weird frame jitters
- Very good at fixing Chroma issues on the GH1
- Overall great contrast and sharpness and does a really nice job of retaining the original clip
- Program is still a little buggy, it occasional crashed on me when I tried to close the program
- There are no instructions, you have to search the net to figure out specific details or call or e-mail Cineform support
Overall, in terms of using c-mount zoom lenses on the GH1 my assessment is they are very usable and depending on your needs you can get some great results. Be aware there is some resolution and image degradation with the digital zoom engaged. Do not do the 4x digital zoom that looks horrible. 2x digital zoom is passable footage by some and for others it may still be quite impressive. For pulldown removal Cineform Neoscene seems to be the best at doing this process and is worth the additional cost. You can go to Videoguys and pick up Neoscene for $99.95 and if you are new to purchasing stuff at videoguys you get a $10 discount just for signing up so that saves you a little bit. Looking at both the compressor and neoscene footage, I would recommend to follow these guidelines when shooting with a c-mount zoom lens:
- Shooting with the “Peep Hole” effect and cropping and scaling your footage in post will keep the sharpness and color rendition of the original footage on your wide shots. If you scale for that close-up of course you’ll see image degradation but for a little scaling to fill the sensor frame seems to hold up pretty well.
- When using Digital 2x on the GH1, transcoding AVCHD footage with compressor seems to affect image color and sharpness, just a little bit though. The image is a little darker, colors are a little crushed, and you do see a little softness. When transcoding with Neoscene, I do not see a change in color from the original footage. Overall, the 2x digital zoom footage is still very usable despite image resolution loss. Be aware that you’ll probably be having to do some work in post to match footage.
- In 2x Digital Zoom- there is no image stabilization when using manual lenses. You’ll have a lot of camera shake as you saw in my own footage. Use a tripod for those tight shots whenever possible.
- I would definitely use the Angenieux Type L2/L3 c-mount zoom for still photography. It’s a lot of fun because of the small size you can get some fun results with out worrying about camera shake.
Here is the Neoscene Angenieux Type L2/L3 1:2.2/17-68 C-mount Zoom Lens footage 1080/24P (I could not use the 720/30P footage in Neoscene).