sid_19911991
Well-known member
[edit] comparing the lens diagrams (images below) on Nikon Japan pages, the internal TC is a more complex optic compared to the design of Nikon's external TCs
"Large-diameter super-telephoto lens with built-in teleconverter with high-resolution and beautiful bokeh for realistic depiction and high-speed, high-precision AF, regardless of whether it is a still image or video. Achieves a realistic depiction. The new coating "Meso-Amorphous Coat", which has the highest anti-reflection effect in the history of NIKKOR lenses, is used, and the synergistic effect with "Arneo Coat" provides clear images with good visibility even in backlight. In addition, the AF drive motor uses the "Silky Swift VCM (SSVCM)," which is a combination of Nikon's proprietary VCM * and "guide mechanism," for high-speed, high-precision, and quieter AF control than before. realization. In addition, the built-in teleconverter that expands the focal length by 1.4 times and the size and lightweight body that allows for carry-on into an aircraft demonstrate high mobility in a wide range of scenes and support professional image expression."
and it uses a new internal CPL C-PL460
View attachment 30905
View attachment 30906
The bent lines in the MTF chart with TC can be misleading. If I am not wrong, the lines bending down indicate the slight loss of sharpness relative to center sharpness...but it does not determine its sharpness relative to other lenses...so in theory, the 400 with tc can actually be much sharper than say a 500 pf whose lines are well above the 0.9 mark throughout...
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