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Hello my fellow cinematographers and filmmakers! I got a question to be clarified ASAP since I'm going on a shoot and in need of the answer =) I understand that Red camera has this issue where the crop factor is different as I change shooting with 4K to 2K. The crop will go from a APS-C size sensor area to a super 16 size sensor area. The camera is only using a certain part of the sensor as it records the set resolution. So the field of view of a 25mm on at 4K will be similar to that is of a super 35 but once it's changed to 2K then the crop makes the lens into a 80mm equivalent (math may not be exact, but you get the point). It’s troubling since the lenses will not have the same effect as different resolution is used. So I’m just wondering if Arri Amira/Alex has the same issue? Is the total area of the sensor (super 35 equivalent) going to be used as I change from shooting with 4K to 2K and 1080p? Does it also have this crop problem as Red? Simply put, if I use a 25mm on Amira shooting at 4K and then I change the resolution to 2K, then field of view of both should be exactly the same? Thanks so much for taking the time to answer this! David Yao

So 65mm has an aspect ratio of 2.20:1, but does it give you a wider horizontal FOV like the anamorphic process does? That is, if I were to slap an 80mm lens on a 65mm camera and a 32mm lens on S35(cropped to 2.20:1) would it give me the same image in terms of spatial compression and horizontal FOV? Or would I have to shoot on a 50mm Anamorphic lens and crop the sides? This is all hypothetical of course-I'm just trying to get a grasp on the 65mm format so I can further appreciate the films that utilized the process.