C300: Rumored Canon CN-E 70-200

Run&Gun said:
Received an email this morning, "Damn I'm good" from one of my people that said it was probably gonna shake out like this instead of the T2.8. Also said pricing would probably be in the ballpark of the 18-80 and they would be surprised if it was $7k or higher. Then they also said there are supposedly more announcements coming.

As far as this lens goes:
Disappointing. Slow at T4.4, EF mount only and that hybrid still lens design with no hard focus stops is crap. Who wants to have to peer around the side of the lens and look into a little window to see the witness marks, if you can even consider them, that?

Maybe I'm just underestimating the market, because I'm only looking at it from my perspective, but I think a fully manual T2.8 version in PL and EF (ability to add a swappable mount system like the others) priced around $10K would have flown out the door.
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The lens you describe is a different market.

This lens is far higher budget doc and ENG work that relies on the DPAF and control built into the C300 II line of cameras. I am seriously considering buying into these compact CN-E lenses and I would have no interest in the lenses you describe.
 
Does Canon or any of the other still lens manufacturers actually measure the t-stop when they rate their lenses? I've always just assumed that they take the f/stop and add about 1/4 stop and assume it is good enough. I've certainly never taken Samyang's claims on their cine lenses as an actually measured result.
 
Mitch Gross said:
I can't speak for Samyang but certainly Canon does measure. The 'T' in T-stop stands for Tested, and no way is a giant corporation going to open itself up for the legal ramifications of just kinda guessing.
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Interesting. I always thought the "T" stood for "transmission". And I always thought that lens manufacturers were perfectly content to fudge numbers like the focal length, f stop, etc. Of course, if I am paying 10x the cost of a stills lens then I am hoping the manufacturer is being a little more honest about their numbers.
 
cpreston said:
Interesting. I always thought the "T" stood for "transmission". And I always thought that lens manufacturers were perfectly content to fudge numbers like the focal length, f stop, etc. Of course, if I am paying 10x the cost of a stills lens then I am hoping the manufacturer is being a little more honest about their numbers.
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You are correct. I just double checked my American Cinematographer Manual and it confirms that the T is for "transmission."
 
Jim Feeley said:
Excuse my ignorance. What's the T-Stop (or range) of the Canon f/2.8 70-200?

Dxomark says 3.3 (or so). Does that sound right?
https://www.dxomark.com/Lenses/Cano...unted-on-Canon-EOS-5DS-R---Measurements__1009
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DXOmark is correct.

Jim Feeley said:
Those seem about right? If so, what might the T-Stop of a cine(ish)-style lens based on f/2.8 70-200 glass be? I'm guessing not T2.8, right?
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If it were based on the same glass, it would be the same (~T3.3), unless they added elements or coatings that changed the T value.

The T-Stop is ALWAYS higher than the F-Stop because light is always lost when traveling through a lens and, by definition, a T-Stop is the F-Stop adjusted for the actual Transmission of light rather than the sizing variables used to mathematically calculate the F-Stop number. T-Stops are important when doing professional work because, (for example) when swapping lenses on a set that has been lit for a T4.5 lens, you don't want the exposure to go up or down, even if by a relatively small amount. If you were lighting for a specific F-Stop number, exposure would change when swapping lenses depending how much light is actually making it through to the sensor. When using T-Stops, the exposure is exactly the same no matter what lens, as long as the T-Stop number is the same.

Hope this helps!
 
We just got the prototype in today. As smooth as the 18-80, and almost identical in size and form factor. They did add a little lens support column on bottom, but I'm not sure if it'll be on the final model. Glad to see this grade of high quality glass coming to the masses.

18318927_10154689299844503_6884376032278037159_o.jpg
 
ChrisTMS said:
We just got the prototype in today. As smooth as the 18-80, and almost identical in size and form factor. They did add a little lens support column on bottom, but I'm not sure if it'll be on the final model. Glad to see this grade of high quality glass coming to the masses.

View attachment 123375
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That support column is part of the servo-grip kit, an accessory. Or at least it was with the 18-80.

I have the 18-80 and love it but one complaint I have about it is that the lens should have shipped with the support column. Without the column there is no way to support the lens (if you want to). You cannot use a generic lens support because of the servo motor built into the lens and Canon does not sell the support column on its own. So, the only way to get the support column is if you buy the servo-grip.

Hope they have seen the error in their ways and will include it. Barring that, they should offer it as stand alone purchase.
 
Jon Roemer said:
That support column is part of the servo-grip kit, an accessory. Or at least it was with the 18-80.

I have the 18-80 and love it but one complaint I have about it is that the lens should have shipped with the support column. Without the column there is no way to support the lens (if you want to). You cannot use a generic lens support because of the servo motor built into the lens and Canon does not sell the support column on its own. So, the only way to get the support column is if you buy the servo-grip.

Hope they have seen the error in their ways and will include it. Barring that, they should offer it as stand alone purchase.
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Should have done my research before posting, I was just excited haha. Canon is here today, I'll ask and see what they say.
 
How do you start a new thred on here? I am trying to find out info about the ZEISS CP.2 and Canon cine... to see if people have experience with both of them.
 
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