Forton
Forton is not a widely recognized brand in the photography world. It may have been a small manufacturer or a brand name used for rebranded lenses. Without more specific information, it's challenging to provide detailed information about Forton lenses.
Forton Lenses
Forton 135mm f/2.8
~$57
Forton 135mm f/2.8 is a manual focus prime lens for full frame cameras.<p><b>Optical design</b></p>Bright lens thanks to the high aperture value Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle.<p><b>Physical characteristics</b></p> With a lens filter diameter of 55 mm commonly filter size, gives you a variety of filter options.
Fortron 35mm f/2.8
~$13
Fortron 35mm f/2.8 is a manual focus wide angle lens for full frame cameras.<p><b>Optical design</b></p>Bright lens thanks to the high aperture value