This is a hands-on comparison (with sample photos) of the M.Zuiko 40-150mm f2.8 Pro lens and the M.Zuiko 40-150mm f4-5.6 R lens from Olympus, both made for the Micro Four Thirds system. I also talk about the original 40-150mm f4-5.6 MFT lens, which is now discontinued, and about the Zuiko Digital 40-150mm f3.5-4.5 lens made for the Four Thirds system. This comparison was made for those of you who are thinking of getting one of them or upgrading to the Pro lens and would like to find out more details.
The E-M1X, the E-M1 Mark III and the 40-150mm f2.8 PRO lens were on loan from Olympus Romania.
You may want to watch this video, where I compare the E-M1X, E-M1 Mark III and the PEN-F. You may also be interested in this video, where I talk about the macro converter that can be used with the 40-150mm f4-5.6 lens.
This is not a paid review. It is my honest personal opinion on this matter.
You can watch this video directly here and here. I am also including a gallery of the sample photographs presented in the video.
40-150mm f4-5.6 R lens + macro adapter @ 40mm 
40-150mm f4-5.6 R lens + macro adapter @ 150mm 
40-150mm f4-5.6 R lens @ 150mm, f5.6, 1/320 sec, ISO 6400 
40-150mm f4-5.6 R lens @ 150mm, f5.6, 1/320 sec, ISO 6400 
40-150mm f4-5.6 lens @ 150mm, f5.6, 1/320 sec, ISO 6400 
40-150mm f4-5.6 lens @ 150mm, f5.6, 1/320 sec, ISO 6400 
40-150mm f2.8 PRO lens @ 150mm, f2.8, 1/320 sec, ISO 1600 
40-150mm f2.8 PRO lens @ 150mm, f2.8, 1/320 sec, ISO 1600 
40-150mm f2.8 PRO lens @ 150mm, f2.8, 1/320 sec, ISO 1600 
40-150mm f2.8 PRO lens + 1.4x teleconverter @ 210mm, f4.0, 1/400 sec, ISO 4000 
40-150mm f2.8 PRO lens + 1.4x teleconverter @ 210mm, f4.0, 1/400 sec, ISO 4000 
40-150mm f2.8 PRO lens + 1.4x teleconverter @ 56mm, f4.0, 1/100 sec, ISO 1000 
40-150mm f2.8 PRO lens + 1.4x teleconverter @ 210mm, f4.0, 1/400 sec, ISO 5000 
40-150mm f3.5-4.5 Four Thirds lens @ 134mm, f4.3, 1/200 sec, ISO 1600 
40-150mm f3.5-4.5 Four Thirds lens @ 150mm, f4.3, 1/200 sec, ISO 1600 
The photo on the left was taken with the original (now discontinued) M.Zuiko 40-150mm f4-5.6 lens, and you can see that it’s sharper, straight out of the camera, than the photo on the right, which was taken with the M.Zuiko 40-150mm f4-5.6 R lens. 
Released 02-03-2021
Thanks for watching!
Raoul Pop 