Promaster 46mm Protection Filter - Basis

I was worried a cheap filter would mess with image quality, but this one doesn't introduce any noticeable haze or softness. The glass is perfectly clear, and it screwed on smoothly without any cross-threading.

I needed a basic filter just for lens protection, and this one is so clear I honestly forget it's on there. The glass is perfectly flat and doesn't introduce any noticeable color shift or flare in normal use.

Was a bit worried a filter might soften the image, but I honestly can't tell any difference in sharpness with it on. The glass is crystal clear and it screwed onto my lens threads perfectly smooth. Just a simple, solid protector that does exactly what it should.