Is the Sigma 18–35mm ƒ/1.8 really ƒ/1.8?
Ok, this is the third time I’m writing about aperture values trying to figure out something that is puzzling, I reviewed the concept of aperture in lenses and why the Micro Fourth Thirds System has a hard time trying to emulate a full frame result in the two lasts posts: The Micro Four Thirds System […]