Here's a picture of the new 24mm T1.5 Rokinon lens. They have confirmed that it uses the a 77mm filter (the same as the 35mm.) Therefore, the external diameter will be the same. Not surprisingly it looks a little shorter than the 35mm T1.5. (I also looked at my Tokina 11-16mm and it's a 77mm filter too so the external diameter should be similar.)
Are these actual cinema lenses, or just recased stills photo lenses. Just curious as to why they wouldn't all be the same size, Zeiss make their cinema lenses the same length and moreless the same weight.
You wouldn't be paying Zeiss prices either. Length is less important than diameter, but we don't know since they haven't released these other lenses yet. The only ones out are the 35mm T1.5 and 8mm T3.8. It appears the regular lenses will be the same diameter.
The 8mm and 14mm will be so wide (180 degrees for the 8mm) that you can't use a mattebox with them. For those you'll have to use the petal hood. On the early 8mm the hood is not removable. A second model is coming out.
They are definately rehoused still lenses, but so are some other brands cinema lenses. But stills glass is often sharper than cine glass so resolution isn't the criteria. In fact, we were debating as to what made a cinema lens. Its not like there are exact rules.
What they appear they will have:
1. Industry standard gears.
2. Uniform front diameter (maybe not the 14mm and 8mm).
3. 77mm filter threads(except 14mm and 8mm).
4. De-clicked aperture ring.
5. Long focus throw of about 170 degrees (except 14mm and 8mm where it doesn't matter because so much is in focus).
6. Dampened smooth focus rings.
7. Exceptional edge to edge sharpness.
8. T stop markings (don't know how accurate they are, but then again most T-stop and F-stop markings are off a bit).
9. High contrast.
10. Limited to no breathing during a focus change (only tested on the 35mm so far).
11. Very fast lenses with 24, 35, 50, and 85 all at T1.5.
12. Markings on the side of the lens instead of on top like stills lens. (For the AC to read.)
What they do not have:
1. The Nikon mount turns the Nikon direction not the cine direction (I don't know about Canon mount lenses)
2. Slight CA when wide open under certain circumstances.
Does that make it a true cine lens to you? I'm sure some will say yes and some will say no. I say its the most bang for the buck of any cine lens out there.