Resently the cameras on cellphones are getting better and better. How ever the optics on them are mostly crap made of cheap plastic.Then i spawned the idea “Why not oparate an SLR lens on to the cell?”
This hack will give you 36x optical zoom on your cell just because of the crop factor + the zoom of the lens you may use. I’d strongly recomend using a prime lens for easier calibrating the focal distance.
