This is ATOLL'S answer to quick change 90 degrees to 180 degrees camera position landscape to portrait in less than 5 second. Without blocking camera ports. 

Please note this version is MODEL C there are 2 other versions this version was used on my Canon EOS R5 camera. For more compatibility details please see ATTOL'S website. 

                                                                                     Canon compatibility

Any Questions please ask 

Thanks for looking I am selling my entire photography equipment due to my age catching up with me so please take a look at my other listings.