What are grey gradient lens?
What is the use of grey gradient lens?
What is the effect of a larger diameter lens on image quality in terms of geometric distortion? What about chromatic distortion? What is the effect of a larger diameter lens (not wider angle) on image quality in terms of geometric distortion? What about chromatic distortion? Which lens is best for Macro-Photography? What is the difference between a prime lens and zoom lens? How does the focal length of a lens change according to the colour of light? Which lens used in cameras? How do optical and digital zoom differ? What is the difference between a portrait lens and a macro lens? Would putting a new Multicoated UV Filter on a Vintage Lens help tame Chromatic Aberration? Which lens is good, 18-135 or 55-250? How can I blur the background and focus the object with an 18-55mm lens using a Nikon D3300? Which is the cheapest good quality macro lens for Canon DSLRs? Photography: What is the difference between optical zoom and digital zoom? What the main difference between canon prime lens and zoom lens? Why is the focal length of a convex lens always positive? What is the best macro lens for a Canon DSLR? Is it possible to change eye colour naturally? How is eye color determined? What is the most flexible Canon lens for macro shots? Can anyone give a step by step tutorial for free lensing in photography? Especially for the part where you need to break open the lens. How can I relate the focal length of the lens and the area it covers? How is eye vision related to power of lens? Is it possible to measure speed of light using lens? How can you measure the negative focal length of a simple lens? What colour is this eye? How do you measure the focal length of a lens? What colour compliments grey? Which macro lens is good for Canon DSLR EOS 600D? Regarding the image quality which is better the 18-135mm lens or the 18-55+55-250mm lenses? In what way I should arrange two convex lenses to get highest magnification? Also tell,what should be their focal lengths?