Photography

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A place to politely discuss the tools, technique and culture of photography.

This is not a good place to simply share cool photos/videos or promote your own work and projects, but rather a place to discuss photography as an art and post things that would be of interest to other photographers.

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communick@viewfinder.pro

Are those phone lens objectives the equialent of holding binoculars in front of a DSLR with an objective? (alien.top)

submitted 11 months ago by rascian038@alien.top to c/photography@viewfinder.pro

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I never used them, so maybe I'm wrong, but aren't they just things you put in front of an existing regular phone camera (for example 24mm on the new Iphone) and then they just take a picture with a 24mm opening, but looking through whatever 120mm telephoto objective you stacked on top, without it having an effect on the photo quality?

In other words, if a 24mm opening can let a certain amount of light and information to the sensor, do the telephoto lenses change that somehow or is it literaly as if you pointed the phone through a binocular, since whatever passes through the telephoto then has to filter further through the standard 24mm lens?

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[–] hatlad43@alien.top 1 points 11 months ago

Yea, sort of. The "telephoto" lens will definitely be degrading the image quality because for one, you're putting a lens on top of the existing lens, too many optical elements. Two, light transmission would probably reduced, given that the aperture would be smaller than f/1.

And btw, nobody can put a binoculars in front of a DSLR to have a usable image, the lenses tend to be wider in diameter than the binoculars.