Blackmagic Camera Update Feb 17 In: Cameras Posted February 21, 2021 33 minutes ago, tupp said: Your P4K should closely match your P6K if you use a speedbooster with your EF lenses on your P4K. As you are likely aware, a speedbooster (or focal reducer) is just an adapter with optics that condense the image circle and character of a lens to a smaller size. Most M4/3 speedboosters will yield a Super35/APS-C frame and look, plus give an extra stop of exposure to boot. Here is a video comparing a Metabones speedbooster with a recent Viltrox focal reducer on the P4K, cued to the section comparing autofocus speed in lower light. To me, the Viltrox is good and the Metabones is better. Neither seems to have any prohibitive problem with their electronics. Was the AF performance of your adapters as good as these speedboosters? I have the metabones and Viltrox. The latter is the most temperamental, particularly with the Pocket, though that is as much down to the camera. With the viltrox, I can't get IS at all on my IS lens; despite updating the adaptor. It also struggles the most losing aperture control. The metabones though is more reliable, though still prone to quirks, mostly in cold weather, so I am experiencing it more now. I know I won't necessary see that much difference in area of view or even low light. Still I'll be intrigued to compare anyway. For me it's quite simple, with EF lenses and a desire to have at least one non MFT camera after 10 years, the Pocket 6K was a better choice when I needed a 2nd Blackmagic camera to compliment my Pocket 4K. That said, I took over a year to decide this and then having it on order, cancelled after last year's lockdown. Now the Pocket 6K Pro is the obvious choice as it gives me the 6K with better screen and ND filters. My 2 adaptors can be used on my Pocket 4K and GH5s when needed. Though I have plenty of MFT lenses as well. Though I may look to sell some of them, and only keep a few for my GH5 and 2 GH4rs I still use when I need 5 or 6 cameras for event filming.