Nikkor AF-S 600mm f/4E FL ED VR lens ($12,296.95) vs. Nikkor Z 600mm f/4 TC VR S lens ($15,496.95) specifications comparison (above picture is not to scale):
| NIKKOR AF-S 600mm f/4E FL ED VR | NIKKOR Z 600mm f/4 TC VR S | |
| SHORT DESCRIPTION | The AF-S NIKKOR 600mm f/4E FL ED VR is a lightweight super telephoto lens with an improved AF tracking, ideal for sports, action and nature photographers. | Be amazed by the performance of a super-telephoto lens that is equipped with advanced technologies and a 1.4x built-in teleconverter to switch between 2 focal lengths effortlessly. | 
| COLOUR | Black | Black | 
| MOUNT TYPE | Nikon F Mount | Nikon Z mount | 
| FOCAL LENGTH | 600mm | 600mm | 
| MAXIMUM APERTURE | f/4 | f/4 | 
| MINIMUM APERTURE | f/22 | f/32 | 
| MAXIMUM ANGLE OF VIEW (APS-C SIZE/DX-FORMAT) | 2° 40′ | DX-format, without built-in teleconverter: 2° 40′ DX-format, with built-in teleconverter: 2° | 
| MAXIMUM ANGLE OF VIEW (FULL-FRAME/FX-FORMAT) | 4° 10′ | FX-format, without built-in teleconverter: 4° 10′ FX-format, with built-in teleconverter: 3° | 
| MAXIMUM REPRODUCTION RATIO | 0.14x | Without built-in teleconverter: 0.14x With built-in teleconverter: 0.2x | 
| LENS ELEMENTS | 16 | 26 elements in 20 groups (including 7 elements in 4 groups in the built-in teleconverter, 3 ED elements, 1 super-ED element, 2 fluorite elements, 2 SR elements, elements with meso-amorphous and Nano Crystal coats, and a fluorine-coated front lens element) | 
| LENS GROUPS | 12 | N/A | 
| COMPATIBLE FORMAT(S) | Full-frame/FX-format Full-frame/FX-format in APS-C size/DX-format Crop Mode 35mm Film | N/A | 
| VR (VIBRATION REDUCTION) IMAGE STABILIZATION | Yes | Lens shift using voice coil motors (VCMs) | 
| DIAPHRAGM BLADES | 9 | 9 ( rounded diaphragm opening ) | 
| DISTANCE INFORMATION | No | No | 
| ARNEO COAT | n/a | N/A | 
| NANO CRYSTAL COAT | Yes | N/A | 
| ED GLASS ELEMENTS | 4 | N/A | 
| FLUORITE ELEMENTS | 2 | N/A | 
| SUPER ED GLASS ELEMENTS | n/a | N/A | 
| PHASE FRESNEL | n/a | N/A | 
| ASPHERICAL ELEMENTS | n/a | N/A | 
| FLUORINE COAT | Yes | N/A | 
| SR (SHORT-WAVELENGTH REFRACTIVE) ELEMENTS | n/a | N/A | 
| SUPER INTEGRATED COATING | No | No | 
| AF-P (PULSE MOTOR) | n/a | N/A | 
| AF-S (SILENT WAVE MOTOR) | No | No | 
| INTERNAL FOCUSING | Yes | Yes | 
| MINIMUM FOCUS DISTANCE | 4.4 m (14.4 ft.) | 4.3 m (14.11 ft) | 
| CLOSE RANGE CORRECTION | n/a | N/A | 
| FOCUS MODE | Auto/Manual Manual/Auto Manual Memory Recall | N/A | 
| E-TYPE | Yes | N/A | 
| FILTER SIZE | 40.5mm | N/A | 
| ACCEPTS FILTER TYPE | Slip-in | N/A | 
| DIMENSIONS (L X H X W) (MM) | Approx. 166 x 432.0 mm (6.5 in. x 17 in.) Based on CIPA Standard | Approx. 165 mm x 437 mm (6.5 in. x 17.3 in.) | 
| WEIGHT (G) (BODY ONLY)*1 | Approx. 3,810 g (134.4 oz.) Based on CIPA Standard | Approx. 3260 g (7 lb 3 oz) | 
| MICRO | n/a | N/A | 
| LENS CATEGORY | Sports & Action, Nature & Wildlife | N/A | 
| FORMAT | N/A | Full-frame/FX-format(35mm) | 
| AUTOFOCUS NIKKOR F | Yes | N/A | 
| FEATURES | Nano Crystal Coat, Autofocus, E-type | N/A | 
| SUPPLIED ACCESSORIES | N/A | LC-K107 Lens Cap (front cap), LF-N1 Lens Cap (rear cap), HK-43 Lens Hood, Strap, CL-L3 Lens Case | 
The above comparison is based on the specifications provided by Nikon. Here is another 600mm lens comparison from B&H Photo:
Nikkor Z 600mm f/4 TC VR S lens pre-order links: