lens specs

[Jim Hoene]

I've been reading about alot of cameras and when they refer to the lens it will say something like....7-56mm f1.4 Macro. What does this mean. I tried to find it in the Malkiewicz book but I havent seen a good explanation. Thanks!

[Mike Panczenko]

I've been reading about alot of cameras and when they refer to the lens it will say something like....7-56mm f1.4 Macro. What does this mean. I tried to find it in the Malkiewicz book but I havent seen a good explanation. Thanks!

 

 

Having the 7-56mm is saying that it is a zoom lens that starts at 7mm and can zoom in to 56mm at the tight end. The f1.4 is its widest aperture, and the Macro refers to its ultra close focus ability.

 

So for a lens that says 65mm f2, it's saying that its a 65mm prime with the widest possible aperture of f2.

[Dennis Kisilyov]

I've been reading about alot of cameras and when they refer to the lens it will say something like....7-56mm f1.4 Macro. What does this mean. I tried to find it in the Malkiewicz book but I havent seen a good explanation. Thanks!

 

 

If you're scientific in mindset, this FAQ will provide a plethora of answers.

 

http://www.faqs.org/faqs/rec-photo/lenses/faq/

[Jim Hoene]

Thanks guys!

[Jon Kukla]

Another useful piece of information that will sometimes be mentioned is the CF - close focus. That can also be important if you have specific shots in mind which might only be a few feet (or less) from the camera.