My BEAUTIFUL wife gave me a Metabones Speedbooster for our 4th Anniversary a few weeks ago and I've just been able to shoot a comparison with my other lenses. I also decided to trade in all my Nikon gear (which I haven't picked up since I got my OMD E-M5 last year) and got the Tokina which I envisioned to be the near ideal landscape setup, size and weight notwithstanding.Just after I got the Tokina and Speedbooster,I took them out for a quick hike and was impressed with the results (after some basic HDR wizardry): The lens test was shot with my E-M5 off my back porch yesterday with dark, overcast skies which presented pretty good conditions for minimal shadows. Alongside of the obvious increase in field of view, I see a noticeable increase in contrast and the clarity of detail is nothing short of amazing. I'm very pleased with the results and consider the MB Speedblaster worth the cost and certainly delivers as promised. Unlike the 9-18 (which I am disappointed in corner sharpness ), I see corner to corner sharpness in the Tokina+SB which I've never seen before in a lens as wide as 7mm. One question: Does anyone know I can correct for barrel distortion? I have PTLens and Hugin but don't have a clue how to apply them to this setup. Hope someone finds this helpful, John BTW - I shot a total of twenty shots but could only upload ten of them here.