davidlondon

yes, the JPEG compression is from making the jpeg for the page. I have assumed user error . The base sensitivity is ISO 850...so ISO 500 shouldn't have added in noisy ? Is there a button/menu setting that's a 'super gain boost' I may have hit ? Maybe an assigned button ? There was nothing on the display that indicated it. Thanks for reading..

Hi, thanks for writing. Here's the images first from the camera direct , a flat profile no editing. The second is the key, I've just done this quickly so I know it's not perfect but you can see the main body of the white area is clean. And on the final picture the noise comes in on the darker wood and seat areas plus the strings. It's on a 16 bit channel, I tried 32 bit didn't make a difference.. I have done green screen before, I added the key to show I'm not making a basic error. It actually appears that adding keylight , or a spill suppressor ..makes the footage grainy ? I hope it's my workflow, then I can correct it . I've not used 4:4:4 footage before.. ? Thinking out loud..possible codec issue ? Thanks again for getting involved , David

Hi, I was shooting in a green screen studio that had a Canon C300 mkii as part of the deal. The lights are pretty much pre set on the pro-background. I set the camera to 1080p 500 iso 4:4:4 12 bit..and it all looked fine on the monitor. I didn't change any other settings as this camera is a dedicated green screen camera. Next day I put the footage in After Effects and it keys terribly, really noisy . No grain is noticeable until I add Keylight, or the spill suppressor then bam..there it is. It's like I shoot it at 20,000 iso ?? I was looking forward to an improved keying experience with 4:4:4....so what did I do wrong ? What did I miss ? Or is it my After Effects settings ? [ maybe that's a different forum] Any advice or answers would be gratefully received.. David