I 'retired' from full-frame Nikon about 3 years ago. Currently have the old OMD-1 ands the Mark 10 ll. Love them both. The size, convenience, and weight are all easy to maintain at my elderly age of 88 years. I just bought the 12-100mm f4.0 Lens - $1200.00. I can't figure out why I need anything else (ff equiv 24-200mm). There is also a doubler built into the camera which gives me a 200mm f:4.0 or a 400mm equiv. Be happy to furnish any more info.
Check out the followingfile: www.E-M1%20Video%20Overview%20Training%20Tutorial%20-%20YouTube.webarchive

I have and OMD_! AND A Mark 10.BEST info on how to use them is on U-Tube. Extremely helpful - and detailed instructions on all menu functions.

I have a Spyder3 Elite for $50.00......