Cine-like lens iris

[Barry Green]

It means to underexpose by at least half a stop, or maybe a full stop.

The Cine-Like gamma curves have no “knee” to prevent blowing out highlights on overexposure. So it’s up to you to protect against overexposure and blowing out. That’s why they recommend in the manual to bias your iris towards underexposure.

I believe the scene files F5 and F6 both include an A.Iris setting of -3. -3 means about one stop of underexposure (but that only applies when using auto-iris, of course).

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Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a)

[Richard Blakeslee]

Hello Berry,

Thanks, that’s what I thought just wasen’t sure. Ibought my DVX100a Tuesday. Your book and DVD were missing. The dealer had opened the case–and someone had ‘borrowed’ the book/dvd. Panasonic is mailing one to them (I hope). I’m looking forward to reading and watching.

I do have one question (which, I’m sure will be answered in you book/dvd, is ‘squeeze’ somewhat better then ‘letterbox’. in information per pixel? Knowing that anamorpic lens would be the best.

thanks for the info.

Cheers,

Richard

[Jan Crittenden livingston]

[Richard Blakeslee] “The dealer had opened the case–and someone had ‘borrowed’ the book/dvd. Panasonic is mailing one to them (I hope). I’m looking forward to reading and watching.”

Hi Richard,

Your book left Secaucus, NJ yesterday. You should have it soon.

Best,

Jan

Jan Crittenden Livingston
Product Manager, DVCPRO, DVCPRO50, AG-DVX100
Panasonic Broadcast & TV Systems

[Barry Green]

Squeeze is for an entirely different purpose than letterbox. You can’t directly compare them and decide one is better than the other, because they are used for different purposes.

Squeeze is for making video suitable for display on a 16:9 television.
Letterbox is for making video suitable for display on a 4:3 television.

Squeeze would look “wrong” on a 4:3 TV, and Letterbox would look “wrong” on a 16:9 TV.

Now, with that said, they start with the same basic information, so they’re roughly about the same in terms of overall resolution. And Squeeze mode can be very, very good. A DVX in Squeeze mode, when shooting 24p or 30p and using THIN line detail, delivers just as much resolution as a “native 16:9” chip camera like the Sony FX1 in DV mode. Squeeze doesn’t work that well in interlaced, but in progressive it works superbly.

—————–
Get the most from your DVX camera. The DVX Book and DVX DVD are now available at https://www.dvxuser.com/articles/dvxbook/ and at Amazon (https://tinyurl.com/54u4a)