I have been experimenting quite a lot yesterday with different adapter solutions and also different HASSELBLAD V-SYSTEM lenses .
Now , you find the SMART FLEX L-PLATE a great tool and you want it .
Great . I love it .
Your first question now should be , what do I want to do with that tool ?
Sounds simple , but that question also decides what kind of adapter you should go for .
My consideration is not based on the ARCA brand adapters .
Now , if you are going to use that tool only to have a fast and comfortable way to change between horizontal and vertical shooting , you would only need a small adapter , as Sunchai's or mine shows you in the previous posts .
If you want to do panos and must achieve the NPP (no parallax point) , (Some say nodal point , which is actually wrong) , for your lenses , you might find , that the built in sliding length is too short for some lenses .
I found this for the CZ 4/40 DISTAGON IF , then you need either a longer adapter or you must use a rail system .
A longer adapter does not seem to be an issue , but if you are going to use a rail system , then your adapter must be able to slide onto the rail system holder , which is 90 degrees shifted .
For that case , I have reworked a NOVOFLEX QPL-AT1 , which I still had , but the "QPL Video" is actually the same , and 20€ cheaper .
Novoflex - Wechselplatten Q=System
I have also found that Sunwayfoto have adapters which could be used without any or very little rework . Have a look here .
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Scan down on the left column for Sunwayfoto and look for DPG-50U up to DPG-120D .
These adapters have one "lip" only , but that is ok. They say its ARCA compatible . I don't know , if that is true , but I will order the DPG-120D .
That adapter would increase your sliding possibility (in the direction of the lens) by about 80mm . So you would possibly not need a rail system for panos with some of your lenses .
Here the NOVOFLEX QPL-AT1 , one lip only , but works in either direction .
View attachment 72651
If you have any questions , feel free to come back .