Lense

[scottishDiva]

I have a lens that says 1:2.4G on it. What does that mean exactly?

[miniman]

Not sure about the 'G' but the rest means that it has a maximum aperture of F/2.4. Who is it manufactured by?

Edited by miniman on Sunday 2nd January 22:37

[XG332]

Sony G lens?

[Kermit power]

miniman said:

Not sure about the 'G' but the rest means that it has a maximum aperture of F/2.4.

It could do, but it's a pretty unusual max aperture if so, isn't it?

Is it not more likely the maximum magnification of a pseudo macro lens?

[XG332]

"You might also notice a number written on your lens that looks like a ratio.
For example 1: 4 - 5.6

This number refers to the widest aperture available for that lens. The lens in the example above can be opened up to f/4 at the widest end (17mm) but only f/5.6 at the longest end (85mm). Generally speaking, the lower the f number the better, because in low light situations the lens can be used to give a brighter image.

Note also, the 1: part of the number is there purely because f stops or aperture is measured in ratio's."