PRO that extends its focal length to a whopping 210mm (35mm equivalent of 420mm) for those really long shots. With the focus ring in its normal position, manual focusing works just like it does on any other Micro Four Thirds lens. The crops also reveal the blobs to cleaner shapes, whereas the 40-150mm blobs show some visible onion-ringing.

As a lightweight, compact telezoom lens, it delivers fast performance so you can work quickly in challenging environments. I tried the 40-150 Pro+MC-20 on BIF and I think I had similar results as you at 300 mm, wide open or nearly wide open.As I’ve said many times before though, continuous autofocus remains an Achilles’ Heel for Olympus and I know many people will be considering this lens for sports or action photography.

You can find the same shot taken without the teleconverter for comparison in my gallery and note the aperture selected delivered the best result in this instance. I have not added anything beyond the small amount of default sharpening which I set on export (around 0. ZUIKO PRO' high-performance lens features a dust proof and splash proof construction rugged enough for professional use, especially ideal when paired with the Olympus OM-D E-M1 III and other pro bodies in Olympus cameras arsenal.

So while it may be harder to deliver very shallow depth of field effects with smaller formats like Micro four Thirds, it does come with the benefit of more forgiving focus. A manual focus clutch permits quick switching between AF and MF, and a programmable L-Fn button avails lens-based control over shooting settings. Apart from the maximum aperture another factor that affects depth of field is of course the distance to your subject.