When the TC-20E III is used with slow f/4 aperture lenses, autofocus stops working completely or becomes extremely unreliable. With the exception of the new Nikon 70-200mm f/2.8G VR II, zoom lenses also start acting up in daylight with very mixed results. The Nikon 70-200mm f/2.8G VR II works surprisingly well with the TC-20E III and I found f2.8 is nice for faster AF, higher shutter speeds and the ability to use TC's for for bokeh the f4 70-200 will give good resutls as well. Basically if the subject is far from the background, the bokeh will be nicely blurred be it f2.8 or f4, if its close to the background, its not going to be regardless of f2.8 or f4 Adapters Black Friday Carl Zeiss CFExpress CFExpress memory card CIPA DxoMark test results Firmware updates lens adapters for Nikon Z-mount lens only rebates Meike Nikkor Z-mount lens only rebates Nikkor Z 70-200mm f/2.8 lens Nikkor Z 800mm f/6.3 lens Nikon AF-S NIKKOR 500mm f/5.6E PF ED VR lens Nikon financial results Nikon full frame The highly-desirable 70-200mm telephoto zoom has come to the Z series. Sports, concerts, weddings, wildlife, portraiture and so much more—all with the incredible low light performance of an f/2.8 made only better by the optically superior Z mount. Optical advancements support passionate cinematographers and videographers. Buy Nikon AF-S NIKKOR 70-200mm f/2.8E FL ED VR Lens featuring F-Mount Lens/FX Format, Aperture Range: f/2.8 to f/22, Six Extra-Low Dispersion Elements, Fluorite and HRI Elements, Nano Crystal & Super Integrated Coatings, Silent Wave Motor AF System, Vibration Reduction with Sport Mode, Electromagnetic Diaphragm Mechanism, Detachable, Rotatable Tripod Collar, Rounded 9-Blade Diaphragm. That’s because lens-based stabilisation is better at correcting some movements with telephoto lenses than in-body stabilisation. The Z 70-200mm f/2.8 VR S’s VR works with the camera’s IBIS. A 70-200mm f/2.8 lens is a cornerstone in a manufacturer’s lens line up and the Nikon Nikkor Z 70-200mm f/2.8 VR S is worthy of that status. First shot is the 70-200 @ 200mm 2.8. second shot is the 70-200 @ 200mm 5.6. third shot is 80-400 @ 220mm 5.3. fourth shot is 70-200 with the TC 20e iii @ 5.6. fifth shot is the 80-400 @ 400mm 5.6. sixth shot is the 70-200 @ 200mm 5.6 cropped to 400mm FOV. No idea if this helps you but I found out what i needed to know:-) Nikon's first pro-level f/4 tele zoom was announced in late 2012. It has the highest rated MTF of any Nikon tele zoom, and performs spectacularly — at a fraction of the size, weight and price of the 70-200mm f/2.8 ED IF VR II. 2016 - today. Nikon 70-200mm f/2.8 FL. The 70-200/2.8 FL is a huge improvement over the old 70-200/2.8 VR II from 2009. UTfwo.