CP2 + CP3 set with PL mount, can i mix it?

[Roberto Leone]

I have some CP2s lenses (wide) , and i would like to buy a 50mm and 85mm CP3, all with PL mount. My Scarlet-W is well calibrated with my CP2s, what i need to do when i buy the CP3s? I can't collimate it with my sensor because i will loose the calibration of my CP2s? I need to buy some internal rings for the CP3s?

 

[Domenic Barbero]

more so than calibration, id say they wont match based on aesthetic alone. They dont really have any of the same characteristics. i think you'd spend a lot of time in color trying to match them.

 

[Roberto Leone]

i tested both, not too much differences. But except the post processing work, i just need to know if i need to add spacers inside the CP3, because i can't calbrate the sensor for CP3s and lost the calibration for CP2s

 

[Domenic Barbero]

Man i tested the cp3s against the cp2s and found them to be vastly different. Duclos even told me all the glass is different in the cp3's which is why they are so different. But if your testing gets you similar footage, thats solid. Ive had vastly opposite results myself.

 

[John Brawley]

I have the opposite.

The CP3 wides to 25mm and then CP2's for the rest.

They match great for me. When I bought them Zeiss told me there weren't many optical differences, mostly they were mechanical and for the lends data ports, and they would match well.

JB

 

[Roberto Leone]

I have the opposite.

The CP3 wides to 25mm and then CP2's for the rest.

They match great for me. When I bought them Zeiss told me there weren't many optical differences, mostly they were mechanical and for the lends data ports, and they would match well.

JB

Did you encountered problems when you calibrate the sensor? Did you added spacers on the CP2? My Scarlet-W is well calibrated with CP2s (15,25 and 35 ) and now i would like to buy CP3s: 50 and 85mm

 

[Dan Kanes]

Hi Robert,

I imagine by spacers you mean shims ?

They are shimmable.

If you’re getting good results with your wides, I wouldn’t change your camera back focus, and if your marks are off on the new lenses, you can Shim them, but huge generalization here : wides are more sensitive to back focus, so in theory you should be “ok”

 

[Ron Steinberg]

I have some CP2s lenses (wide) , and i would like to buy a 50mm and 85mm CP3, all with PL mount. My Scarlet-W is well calibrated with my CP2s, what i need to do when i buy the CP3s? I can't collimate it with my sensor because i will loose the calibration of my CP2s? I need to buy some internal rings for the CP3s?

The CP.3's will come properly shimmed/calibrated from the factory to the PL standard to meet infinity and accurate marks. If your CP.2's are equally calibrated (they would have been from the factory) then there should be no need to adjust your sensor. If they don't match, you can purchase ZEISS shims and have the CP.3's collimated. This is best done by a lens technician on a proper collimator but ZEISS do provide instructions on doing it yourself with a test chart: https://www.zeiss.com/content/dam/c...structions-zeiss-compact-prime-cp3-lenses.pdf instructions for adjusting the flange focal distance start on page 16.

Regarding the optical properties of the CP.2 vs. CP.3, in most cases the glass is the same (the 18, 50 and 85 are all new optical designs) however the T* coatings on the CP.3's are entirely new, as is the black edge paint on the elements. This makes a big difference in the characteristics of the lens. The housing, focus mechanics and Extended Data are also all new. It's up to you to judge whether they match closely enough or not. In my testing the optical differences were quite obvious and I would prefer a matched set - maybe sell you CP.2's to finance a more complete set of CP.3's? Not only will they match better optically, you will have the benefit of a better focus mechanism and consistent lens housing size. The alternative is to purchase some original CP.2's to complete your set. We still have the 50/2.1 and 85/2.1 in stock in EF mount. PL mounts are available to purchase as accessories and it's easy to switch them with the proper T6 torx wrench. If you're in Canada and are interested in these lenses let me know.

 

[Roberto Leone]

The CP.3's will come properly shimmed/calibrated from the factory to the PL standard to meet infinity and accurate marks. If your CP.2's are equally calibrated (they would have been from the factory) then there should be no need to adjust your sensor. If they don't match, you can purchase ZEISS shims and have the CP.3's collimated. This is best done by a lens technician on a proper collimator but ZEISS do provide instructions on doing it yourself with a test chart: https://www.zeiss.com/content/dam/c...structions-zeiss-compact-prime-cp3-lenses.pdf instructions for adjusting the flange focal distance start on page 16.

Regarding the optical properties of the CP.2 vs. CP.3, in most cases the glass is the same (the 18, 50 and 85 are all new optical designs) however the T* coatings on the CP.3's are entirely new, as is the black edge paint on the elements. This makes a big difference in the characteristics of the lens. The housing, focus mechanics and Extended Data are also all new. It's up to you to judge whether they match closely enough or not. In my testing the optical differences were quite obvious and I would prefer a matched set - maybe sell you CP.2's to finance a more complete set of CP.3's? Not only will they match better optically, you will have the benefit of a better focus mechanism and consistent lens housing size. The alternative is to purchase some original CP.2's to complete your set. We still have the 50/2.1 and 85/2.1 in stock in EF mount. PL mounts are available to purchase as accessories and it's easy to switch them with the proper T6 torx wrench. If you're in Canada and are interested in these lenses let me know.

Thanks for your comment Ron, as i expeted, i don't need to waste my time, the best way is to buy these CP3s (50 and 85) and work!! Anyway, i would like to buy from you, but it's cheaper here in Italy! Thanks again