Olympus 300mm f/4 Samples from today...

These are straight out of the E-M1 .jpg's saved at 90% of the 300f/4 + 1.4x tele. No cropping, no sharpening, no nothing. Dull, dreary and raining, of course. Shutters vary 1/50th 1/250th, all are ISO 800. Hopefully EXIF is there. I was between 15 and 25 feet of the birdies.

Miss Cardinal liked to pose the most. I would definitely have had to up my ISO with the 7DII to get shutters of at least 1/500th. That's a big PLUS for Olympus. Any blurr or less sharpness is most likely due to bird movement.