I'm really trying to understand distortion (and especially barrel distortion) when it comes to lenses. For the 25mm RPP, red says that the lens has a Max Distortion of 4%, now is that 4% calculated the same as a canon lens on photozone? Like the link below?
Or does the 4% Red is reporting related to something different? Just a little confused here as 4% seems quite high compared to the 1.4% of the canon lens. If this is not the case does anyone know what the RPP's come in at for distortion or do they calculate totally different with cine lenses and you can't really compare? Just a lot of questions and need help. Thanks in advance.