Oly 70-300 v Pan 100-300???

Started Jan 16, 2012 | Discussions thread
Gregm61 Forum Pro • Posts: 14,968
Re: Nice shots, Greg

MAubrey wrote:

Gregm61 wrote:

The times I run into problems are when I cannot keep the ISO's down below 1600, like if the subject is moving and I cannot keep shutter speeds above 1/800 without going into that extra high ISO range again.

I'm wondering how much the extra 1/2 stop difference between the pana 100-300mm would help here...

I don't have either and am in a similar situation to the OP and trying to decide between the two--I have a G2 body, but I've been wanting to pick up a smaller RF-style body for backpacking trips and Olympus is rather attractive for that.

1/2 stop isn't going to be much of a deal maker or breaker, but f5.6 to f6.7 is a major mental deal-breaker for many. Using my 70-300 f4-5.6 Zuiko from my DSLR days I never used it wide open at 300mm and f5.6, because f8 at 300mm was better, so the f6.7 maximum aperture was not even an issue in my mind when I bought the 75-300.

I have absolutely no doubt the mega OIS in the 100-300 Panny lens is better. Panasonic's stabilization system has always been top drawer. I keep the IBIS system in the E-P3 turned off unless I am shooting at very lower shutter speeds in really low light conditions, which means I am not using my 75-300 Zuiko :). If you want access to an effective stabilization system in all light at 300mm, the Panny 100-300 is probably the lens you need, even if you wind up buying either a Pen or Panny GX-1 later.

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