nanoflash EX1R limit? at DVinfo.net

Robert Bobson · February 18th, 2011, 08:03 AM

The nanoflash can record up to 280 Mbps from the EX1R. But isn't that top rate unnecessary?

What I'm asking is: does the 100mbps recording from the EX1R look better than the 50mpbs? Does the 280mbps recording from the EX1R look better than the 100mpbs?

thanks

Piotr Wozniacki · February 18th, 2011, 08:11 AM

Quote:

Originally Posted by Robert Bobson

does the 100mbps recording from the EX1R look better than the 50mpbs?

No.

Quote:

Originally Posted by Robert Bobson

Does the 280mbps recording from the EX1R look better than the 100mpbs?

Yes.

Robert Bobson · February 18th, 2011, 08:35 AM

Any idea why that would be? Seems like it would be just the opposite....(?)

Kent Beeson · February 18th, 2011, 10:59 AM

I've read that over 100mbs on the EX1R is noisy, so not sure how 280mbs is better, but don't know from experience, only what I read.

Robert Bobson · February 18th, 2011, 01:42 PM

Piotr ~

How do you know that 100mbps doesn't look better than 50mbps? and that 180mbps DOES look better than 100mbps? from your own experience? or can you point me to the info?

thank you!

Piotr Wozniacki · February 18th, 2011, 01:48 PM

I thought you wrote 280 (not 180) Mbps in your OP. It's the 280 Mbps I-frame that gives the best results with the nanoFlash.

As to Long-GoP 100 not "looking" better that 50 - this holds true with the EX series cameras which are quite noisy. With lower bitrates (like 50 at 4:2:2, or 35 at 4:2:0), the compression is high enough to mask this noise a little. With 100 Mbps and up to 180 Mbps L-GoP, the noise gets augmented.

HTH

Piotr

Steve Kalle · February 21st, 2011, 11:45 PM

I concur with Piotr. If you want a good read, go find his very long thread in the nanoFlash forum.

I find the Picture Profile settings even more important when using a nanoFlash at high bitrates mainly due to noise. I can't recall my settings, but I turned the sharpening settings down quite a bit (I think frequency and crispening) in order to reduce noise.

February 18th, 2011, 08:03 AM	#1
Robert Bobson Major Player Join Date: Feb 2003 Location: Bay City, Michigan Posts: 585	nanoflash EX1R limit? The nanoflash can record up to 280 Mbps from the EX1R. But isn't that top rate unnecessary? What I'm asking is: does the 100mbps recording from the EX1R look better than the 50mpbs? Does the 280mbps recording from the EX1R look better than the 100mpbs? thanks

February 18th, 2011, 01:48 PM	#6
Piotr Wozniacki Inner Circle Join Date: Aug 2006 Location: Poland Posts: 4,086	I thought you wrote 280 (not 180) Mbps in your OP. It's the 280 Mbps I-frame that gives the best results with the nanoFlash. As to Long-GoP 100 not "looking" better that 50 - this holds true with the EX series cameras which are quite noisy. With lower bitrates (like 50 at 4:2:2, or 35 at 4:2:0), the compression is high enough to mask this noise a little. With 100 Mbps and up to 180 Mbps L-GoP, the noise gets augmented. HTH Piotr __________________ Sony PXW-FS7 \| DaVinci Resolve Studio; Magix Vegas Pro; i7-5960X CPU; 64 GB RAM; 2x GTX 1080 8GB GPU; Decklink 4K Extreme 12G; 4x 3TB WD Black in RAID 0; 1TB M.2 NVMe cache drive

February 21st, 2011, 11:45 PM	#7
Steve Kalle Trustee Join Date: Aug 2009 Location: Chicago, IL Posts: 1,554	Re: nanoflash EX1R limit? I concur with Piotr. If you want a good read, go find his very long thread in the nanoFlash forum. I find the Picture Profile settings even more important when using a nanoFlash at high bitrates mainly due to noise. I can't recall my settings, but I turned the sharpening settings down quite a bit (I think frequency and crispening) in order to reduce noise.

February 18th, 2011, 08:35 AM	#3
Robert Bobson Major Player Join Date: Feb 2003 Location: Bay City, Michigan Posts: 585	Any idea why that would be? Seems like it would be just the opposite....(?)

February 18th, 2011, 10:59 AM	#4
Kent Beeson Major Player Join Date: Oct 2009 Location: West Texas Posts: 266	I've read that over 100mbs on the EX1R is noisy, so not sure how 280mbs is better, but don't know from experience, only what I read.

February 18th, 2011, 01:42 PM	#5
Robert Bobson Major Player Join Date: Feb 2003 Location: Bay City, Michigan Posts: 585	Piotr ~ How do you know that 100mbps doesn't look better than 50mbps? and that 180mbps DOES look better than 100mbps? from your own experience? or can you point me to the info? thank you!