S16 Lenses 2K and 3K

[Hans von Sonntag]

Since I had my first shoot on Red on Friday we had a chance to test some lenses we purchased for our own RED which will arrive in late march.

Zeiss Super Speeds on 4K: Fine, as expected

Cooke 20-100 on 4K: Dito


Canon 8-64 on 2K:

Works fine but FOV seems to be more narrow than on S16. We had a look at 4K and the lense portholed a lot, no surprise. We than switched to 3K and it still portholed but not too much, meaning:

If one wants to get most out of his/hers S16 lens shooting 3K makes a lot sense. Of course the image must be cropped until there is no vignetting anymore apparent but one will gain approx. more 20% FOV compared to 2K and considerably more "oversampling-flesh" for down scaling to 1080p.

Hans

[Sanjin Jukic]

Since I had my first shoot on Red on Friday we had a chance to test some lenses we purchased for our own RED which will arrive in late march.

Zeiss Super Speeds on 4K: Fine, as expected

Cooke 20-100 on 4K: Dito


Canon 8-64 on 2K:

Works fine but FOV seems to be more narrow than on S16. We had a look at 4K and the lense portholed a lot, no surprise. We than switched to 3K and it still portholed but not too much, meaning:

If one wants to get most out of his/hers S16 lens shooting 3K makes a lot sense. Of course the image must be cropped until there is no vignetting anymore apparent but one will gain approx. more 20% FOV compared to 2K and considerably more "oversampling-flesh" for down scaling to 1080p.

Hans

Thanks Hans.

Good to know that.

[Andrew Benz]

Thank you Hans this is very useful information.

[Hans von Sonntag]

You are welcome. :)

[Hans von Sonntag]

I am sure that N16mm lenses will not work in this manner. It would be interesting to test different S16 as well. I am sure they will differ a bit, not much though.

Hans

[Mike Prevette]

Well actually I was amazed that at the kind of coverage I did get with a 16mm lens in 3k. Take a look at my Seattle thread in the footage forum. I have a link to some tests with an ancient Ang12-120 "cokebottle". I shot a bit of 3k with it and loved the subtle vignetting. It was clear that it was covering way more than just 2k.

http://www.freedomfromgravity.com/red/lenstests/angenieux_12_120/

[Hans von Sonntag]

Well actually I was amazed that at the kind of coverage I did get with a 16mm lens in 3k. Take a look at my Seattle thread in the footage forum. I have a link to some tests with an ancient Ang12-120 "cokebottle". I shot a bit of 3k with it and loved the subtle vignetting. It was clear that it was covering way more than just 2k.

http://www.freedomfromgravity.com/red/lenstests/angenieux_12_120/

Interesting. Good to know that I was wrong on this.

Hans

[Georg Misch]

I went to Otto Nemenz last week to try out some lenses and found the same. 16mm lenses just cover 2k. Super 16 lenses just don't cover 3K. And depth of field in 2K is narrower than in real Super 16

This got me thinking about shooting with Super 16 lenses in 3K, but I wonder what results the necessary scaling in odd percentages would have on image quality, I guess Graeme cold say something about that.

The other thing is that one would need to have different frame guides in the EVF to frame up properly.

Maybe RED could introduce a mode which is optimised for Super 16 lenses, that uses an appropriate section of the sensor, for handheld work it would be great.

I did mention this to Jon and a couple of other RED guys when I was at the RED day last week (great event by the way), but I don't know how high this is on their list.

Georg

[Jorge Díaz-Amador]

I didn't know about a 3K option. Does anyone know the active pixel area for 3K?

[Alexander Christ]

RED 3K: 3072 x 1728, 16.59 x 9.33mm

[jacknusa]

Your thread is "S16 lenses..." So, when you say your superspeeds cover 4K, are you talking about the "S16 super speeds" or the "35 super speeds"
- I'm assuming 35 but I was just curious...

Jack