I’m going through my gear trying to adapt to the C100 and C300 with the equipment that I already have and one big piece of kit I own is PL lenses. I need to figure out how I can get some use out of them with the C300. Unfortunately I dont see a solution for one of the three PL lenses I own. The Red 17-50 just wont work. No adapter for PL to EF and the mount cant be converted so I can’t use the Red 17-50. Bummer. Adapters just aren’t available yet to date to get a PL mount on an EF camera without issues so I sold the Red 17-50. It just didn’t make sense to keep it if I dont have a camera that it will work with.
I decided to look into swapping out the mount on my 85mm Zeiss CP.2 to the EF mount. I’ve seen a few videos on this and it seems like a pretty straight forward modification but the price to do this has me thinking.
The kit cost $390 and the torque screwdriver pictured above is another $173. This comes to a total of $563.That’s a lot of cash for a mount swap! I talked to a lens specialist and he said don’t worry about the torque screw driver. Tighten the screws enough to secure them in a criss-cross pattern, but don’t tighten them so much that it strips the screw. Sounds good. This is probably Zeiss making sure you don’t strip the screws or damage the mount by over tightening for warranty purposes.
This is the driver I decided to buy. It cost $7 on Amazon. Doesn’t have the torque feature. It’s just a T6 screwdriver made by the same company Wiha that makes the torque version.
I got to thinking. The Rokinon 85mm cost $350.00 and it’s an EF version with no adapter, full manual declicked iris with gears, and the reviews are outstanding! I decided to go ahead and buy the Rokinon 85mm. I’m in the process of comparing the Rokinon to the Zeiss CP.2 85mm. Click on the link to see how it compares.
I like the Zeiss Cp.2 a lot but for $213.00 less than the mod I get a new lens. Tell me I’m crazy but the mod just doesn’t make sense! Well I guess it doesn’t matter if it makes sense or not since I did buy the Rokinon anyway. I seriously need to reconsider if owning PL lenses is worth it at this point. I was considering a Red camera this year and as it looks for now I don’t see getting one so is it worth holding on to these PL lenses? I guess for now I need to think this through but this new Rokinon wast to good to pass up. lets move forward to swapping out the PL mount to an EF
The EF mount kit arrived and my next step is to install it. Hopefully I can get this done without issues and not have to change the shims. We shall see…..
This video from Zeiss shows how to do the mount swap the right way. It looks pretty easy so lets get it done!
The kit comes with everything you need to get the job done. Shims,screws and the EF mount that has two pieces.
The PL mount is only one piece so taking it off was simple. I tested the how tight the screws where so I can make sure to get the same tightness later when it was time to install the new EF mount. As you can see one shim is in place. I left it in and moved to the next step.
Since the EF mount comes with a collar that has a lens support bracket this has to go on first. This mount is the main support for the lens. Notice the grove in the mount that is on the left side under the collar? This is for lining up the mount to the lens in the next step.
Its kind of hard to see but on the base of the lens there is a pin The collar’s grove lines up with it.
Okay. The moment of truth has arrived. No big deal. I put all the screws in first then tightened them in, but not all the way. After I got all the screws into the mount I then tightened them in a crisscross pattern making sure to not over tighten. Very simple and had no issues at all.
The EF mount has only four screws to tighten down.
Thats it! All done.
I’ve been wanting to see this for a while now! Looks great! Now I need to check the focus.
I printed out a focus chart and mounted it to the wall. I did two different measurements. One from 4′ and another from 6′. The focus was perfect! No need to change or add shims. All in all this was very easy to do and now I can use my Zeiss CP.2 85mm with both the C100 and C300 cameras or any EF mount camera.
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