Federal
Federal likely refers to the Federal brand of cameras and lenses produced in the USSR. These were typically budget-friendly options, often based on designs from other manufacturers. Federal lenses would have provided affordable alternatives for photographers in the Soviet Union and Eastern Bloc countries.
Federal Lenses
Federal 35mm f/3.5
~$215
Federal 35mm f/3.5 is a manual focus wide angle lens for full frame cameras.<p><b>Optical design</b></p>Average brightness in this league
Greens Federal 200mm f/3.5 Auto
~$225
Greens Federal 200mm f/3.5 Auto is a manual focus telephoto lens for full frame cameras.<p><b>Optical design</b></p>Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle. Great choice mainly for good light conditions<p><b>Physical characteristics</b></p>126 mm long, requires consideration if you want to carry in the camera bag. Weights 536 grams so plan ahead, carry only if really necessary. With a lens filter diameter of 62 mm you are one step from the next standard filter size, buy step-up ring and bigger filter you may want to use a step-up ring and 67 or 77mm filter.