Frames from PL mount lens tests:

[jamesedwelland]

I guess you can tell something about center definition and abberation...Could really do with lens charts even if only at corners and centre!

Still...interesting. Some clear conclusions based on the shots you have given us.

thanks

james

[chuck colburn]

Flange focal distance of camera mount seemed to be slightly off, which as you know makes "measured" focus and "zoom in" focus unusable. The marks on the Red 18-50 lens are not scribed so they are kind of vague and not suitable for working in this style until modified.

Matt Uhry

Hey Matt,

Your on the inside there. Do you know if the final FF depth is set up at RED headquarters or is it done where the camera is manufactured? The reason I ask is, since it would not be to practicle to use a depth gauge like how would be done with a film camera I assume they are using a given lens which is locked down at infinity and viewing the reflected image thru a measuring autocollimator which in itself has to be checked for calibration.

Just wondering.

[Bruce Allen]

Chuck and Matt, I hope this won't distract too much from the very interesting flange focal depth discussion going on here, but I did a quick undistort and (half-baked) attempt at CA removal for your Peleng shot in case you're interested. Didn't deal with any of the fancy higher-order distortions, didn't use any clever mappings (which make more natural-looking images than this), just used simple After Effects Optics Compensation.

EDIT: oops, let me just give links:
http://www.boacinema.com/projects/re...ectilinear.jpg
http://www.boacinema.com/projects/re...r_overview.jpg

Bruce Allen
www.boacinema.com

[Evin Grant]

What I find interesting is what little difference there are between all these lenses. Yes I agree the Zeiss seems slghtly sharper but no amount that would be an issue. The Cooke zoom was my overall favorite for feel, very natural and a bargain considering they can be picked up used for less than the Red 18-50. The Russian lenses also seemed to hold thier own which makes me excited about the Elites and Illuminas. All in all though I may pick up one of those 20-100 Cooks first. Hope to test those Nikons soon too.

[Stephen Williams]

Hi Evin,

I was surprised how good 30 year old cine glass is. I would have expected a modern lens designed for a digital sensor to wipe the board, clearly lens manufactures have not improved by that much. It would be interesting to see an S4 & Master Prime IMO.

Stephen

[Evin Grant]

Well I shot the music video with a set of MII Zeiss superspeeds and for the most part they were sharper than the sensor could resolve, but ther flared very easily and the Red 18-50 definately handeled the backlight car shots better, and held more contrast. I have a feeling that's going to be the more dramatic difference, contrast, CA and flare control. Graeme has stated that the Red sensor is capable of about 3K actual resolution once you past the debayer and AA so it's not surprising to see these lenses resolving to that limit. It's the other factors that we will be the deciding on.

[Matt Uhry]

Graeme has stated that the Red sensor is capable of about 3K actual resolution once you past the debayer and AA so it's not surprising to see these lenses resolving to that limit. It's the other factors that we will be the deciding on.

Yes, I think that's what was interesting about this test - I know the Zeiss lenses at 2.8 have much better resolution than the Cooke 25-250 Mk2, but both are as high as the Mysterium can put to use so they look quite similar as far as center resolution.

More testing to follow.... And I hope some discussions about other aspects of lenses...

Matt Uhry
www.mattuhry.com

[dvpixl]

after seeing how long it takes to change lens mounts on the Red I'm thinking for the price of it I should definitely consider the PL option.

maybe I'm taking it out of context, but just incase...

I thought PL mount was mandatory? whether you order a nikon mount or not, it comes with it no matter what? yes? no?

That's what Jarred seems to have said before.

[Bruce Allen]

maybe I'm taking it out of context, but just incase...

I thought PL mount was mandatory? whether you order a nikon mount or not, it comes with it no matter what? yes? no?

That's what Jarred seems to have said before.

Haha, no I meant the Peleng lens, not the Red (you get different mounts for the Peleng). Sorry for being ambiguous.

Bruce Allen
www.boacinema.com

[pablokorona]

thank you for posting these photos.
and even throwing together the test.


however, its disconcerting that these were not more "scientifically" focused, which makes it hard to gauge the RED lens vs. the others - but i'm glad its not as far off as i had feared.

again, thank you. i don't mean to undermine my appreciation.