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Dragon Lens Coverage Information

Does Arri Fujinon Alura 18-80mm T2.6 cover 6K HD?
 
Tom,

We used this lens for Finchers GWDT, I could clearly see vignetting at 18mm, other wise a very nice lens.
 

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Tom Lowe said:
Does Arri Fujinon Alura 18-80mm T2.6 cover 6K HD?
Click to expand...

For you Tom anything:

Arri Fujinon Alura 18-80mm T2.6
@18 - Portholes 6K FF, covers 5.5K WS
@40 - 6K FF covers

I tested this before 6K HD existed as a format, so I imagine you'd be looking around 35mm-ish for 6K HD.
 
Thanks guys.

I need a zoom lens in this range 20-80mm that is faster than T2.9 and fully covers Dragon 6K HD. Any suggestions?
 
Tom Lowe said:
Thanks guys.

I need a zoom lens in this range 20-80mm that is faster than T2.9 and fully covers Dragon 6K HD. Any suggestions?
Click to expand...

There's really nothing like that out there today. Faster speed zooms in general are rare beast and there's not to much out there. Pretty much the only cinema style zoom designed for sensors larger than S35 so far have been the Zeiss Compact Zooms. But those are T2.9, which you know.
 
Optimo 19.5-94 T2.4-2.6 should come very close for 6KHD - minimum image circle is specified as 31.4mm, and you need 31.9mm for 6KHD

It'd be worth a test IMHO...
 
sorry folks if this has been covered already, but I still need to ask... what actually is the problem those Angenieux Optimos DP 16-42mm T2.8 / DP 30-80mm have with the motion mount...???

'd be kind if someone could answer this, cause I've been thinking about buying those two zooms... answers appreciated... :blink:
 
One thing I've noticed with shooting at 6k, is that a lot of my stills glass has noticeable vignetting bellow f2.8. I didn't notice it as much on still glass with 5k, it's i think a different "thing" then cinema glass vignetting? Also I've noticed my older still glass isn't as light constant on the edges as newer glass, and in many cases the older lenses are unusable at 6k if the shot isn't framed by shadows (especially nikon glass pre 1970). Two nikon lenses i have that really do well at low F stop is the new f1.4 24mm and 58mm lenses. I went to http://www.dxomark.com to check if i was insane, and those databases really confirm my impressions. I guess one of the reasons for cinema glass being more expensive then still glass is that the T stop seems a lot more consistent on light from edge to center then f stops. Shooting with nikon glass with the various flares, vignetting and extreme dynamic range really reminds me of the creative choices i had with film.
 
bulgarelli@sbcglobal.net said:
hello
Sorry if I've missed it but has anyone tested the Zeiss SLR lesnes, btw, is that the same glass as the CP series? Do they cover 6K?
These are the lenses I'm talking about, I used them with a Epic MX and really liked the look, they are EF mount
http://www.zeiss.com/content/dam/Photography/new/pdf/brochures/slr/slr_leaflet_en.pdf
Thanks for your help
Click to expand...

Yes, they do cover 6K FF on Dragon. And more or less they are the same optics with some very slight variations.


PatrickFaith said:
One thing I've noticed with shooting at 6k, is that a lot of my stills glass has noticeable vignetting bellow f2.8. I didn't notice it as much on still glass with 5k, it's i think a different "thing" then cinema glass vignetting? Also I've noticed my older still glass isn't as light constant on the edges as newer glass, and in many cases the older lenses are unusable at 6k if the shot isn't framed by shadows (especially nikon glass pre 1970). Two nikon lenses i have that really do well at low F stop is the new f1.4 24mm and 58mm lenses. I went to http://www.dxomark.com to check if i was insane, and those databases really confirm my impressions. I guess one of the reasons for cinema glass being more expensive then still glass is that the T stop seems a lot more consistent on light from edge to center then f stops. Shooting with nikon glass with the various flares, vignetting and extreme dynamic range really reminds me of the creative choices i had with film.
Click to expand...


It's very common for lenses to exhibit vignetting at maximum apertures on their "designed for format" and it clearing up as the lenses are stopped down. Some lenses are moderately "over engineered" to combat against this. Master Primes come to mind in regards to how they perform on Super 35mm and this "over engineering" is what allows for them to cover larger formats they weren't designed for like Dragon 6K FF.

Cinema glass often costs as much as it does for a variety of reasons. One thing people are noticing even on the less expensive cinema zooms even is "uneven field illumination" which can bug the hell out of some people.

T Stops are much more accurate for evaluating and measuring performance compared to the calculated F-Stop.

Off to location. Time to shoot.
 
Phil Holland said:
...
Master Primes come to mind in regards to how they perform on Super 35mm and this "over engineering" is what allows for them to cover larger formats they weren't designed for like Dragon 6K FF.
Click to expand...
That's for sure on the MP's on the engineering comment. I have tested the 50mm MP anamorphic which is specified to a diameter of 29.26 ( http://www.arri.com/camera/cine_lenses/prime_lenses/anamorphic.html).

What this worked out in anamorphic land for the dragon is that FF vertical is covered completely (i.e. 3160 sensors) and horizontal to 9/6's sensor ratio perfectly (i.e. 3:1 aspect ratio) for all Tstops. For T1.9-5.6 it is great at 16/9 (i.e. 1.77) which works out to a 3.54 ratio. And with the camera fix mounted (i.e. no panning), i find the 50 mm anamorphic is very usable at FF of the entire dragon sensor at t1.9 (there is a nice flowy vignetting at the edges ... which is a amazing 3.88 aspect ratio). Note that there is ZERO distortion that I can find even outside the rated 29.26 image diameter. All this with no focus breathing, zero gate or lens artifacts on the sensor - but with a beautiful bokeh.

Edit: btw I'm using the 35mm now, it totally covers up to a 3:1 aspect ratio (i.e. full height of the sensor), but can't get to 3.5:1 .
 
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Does anyone know if the Zeiss 15-30mm CZ.2 compact zoom lenses will get full coverage on the Dragon 6k sensor and will they also get full coverage on the Weapon vista vision sensor when it is available?
 
Ross Isaacs said:
Does anyone know if the Zeiss 15-30mm CZ.2 compact zoom lenses will get full coverage on the Dragon 6k sensor and will they also get full coverage on the Weapon vista vision sensor when it is available?
Click to expand...

100% on Dragon 6K FF. 8K FF unknown, but I'll test it out. I "think" it's looking good though.
 
Thanks Phil you are the Man!
Pitty as I have an almost new matched set of Angenieux Optima DP Rouge 16-42mm lenses for 3D that I will have to sell as they only get 5.5k on the Dragon sensor.
 
Any word on whether the new Zeiss CP Zooms will cover 8K. I know they cover 6K with no problem. I love these lenses and I sincerely hope I won't have to get rid of them : )
 
*updated, added Cooke 5/i Primes to the first post for 6K Dragon sensors.

The work is seemingly never done regarding lens coverage, but it's happening where I can and when I can.

Weapon 8K coverage is on the horizon shortly. Some things have been tested, some have not. Lots to do.
 
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