ZIN
TPF Noob!
- Joined
- Oct 18, 2007
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- 40
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I have been reading and reading to learn about lenses,(hence: mm,f stop,aperture,dof, and such).
I want to know why a person wouldnt just buy a lens that covers a wider range is it price,function , size?
you can buy an 18-200 2.8-4.5 or just a 70-200 f 2.8 why wouldnt you just buy the 1st. one?
then there is a 70-300 wouldnt that be better yet?
I am confused at all the different numbers .
I do understand that a macro lens is a very small like 50mm and a low f1.8, but the other lenses got me confused.
I want to know why a person wouldnt just buy a lens that covers a wider range is it price,function , size?
you can buy an 18-200 2.8-4.5 or just a 70-200 f 2.8 why wouldnt you just buy the 1st. one?
then there is a 70-300 wouldnt that be better yet?
I am confused at all the different numbers .
I do understand that a macro lens is a very small like 50mm and a low f1.8, but the other lenses got me confused.