what is thing called? what lens is that/ which are useful for that?
These are specialized pieces of equipment called "mental cameras" and are used by the upper echelons of photographers.Basically, they have trascended the mortal concept of having to record an image somewhere, and instead take the pictures mentally in their head, feel an extreme ans orgasmic sense of accomplishment, and go on with their life
>>4458963It's a monocular, you log
>>4458963Directors viewfinder You can attach a lens and get an idea of how things will look with that particular lens, so you can plan the scene's framing, etc
>>4458977I use when I'm walking around with a view camera so I can explore composition/framing without having to move a tripod+view camera.
>>4459028I do the same with frame lines on my rangefinders