which prime should i get?

[paulbrogden10]

Hello I need some guidance I all ready own the Sigma 150-600 C and canon 70-200 II coming soon. I also just got the canon 2xIII extender.

I am looking at the sigma 500mm f4.5 ex hsm lens none dg version. been offered it for £850 but it has no image stabilisation. wish I could afford the canon 500mm but its out of my budget.

I have been looking at the canon 300mm 2.8 non is lens at around £1400. wondering how it does with a 2x extender on it.

I wonder how 300 2.8 with 2x vs 500 performs.?

I also have looked at the sigma 120-300 2.8 os sports lens and am wondering how a teleconverter does on this lens.

I have always wanted a prime 500 but they are so expensive .

Any way has any one got an opinion on this and is image stabilisation the end and be all? thanks for your help?

Which do you think is the best to get?

I photograph any thing from birds to mice.

[ebiggs1]

"...before Sigma adopted this more recent nomenclature."

DG currently means it was for use on a FF.  DC means it is designed for crop camera.  And it is the naming convention of the Sigma 120-300mm f/2.8 DG OS HSM Lens for Canon or Sigma 120-300mm f/2.8 EX DG HSM.

If you care to check out Sigma's web site you will see this is how Sigma names the lens models.

The particulars of why belongs to the ad department.  BTW, it is 2017 not 2008.