Leofoto SF-01 Lens Foot for Sony 70-200 f2.8 GM & 100-400 f4.5-5.6 GM 241XL particularly when it's used at

particularly when it's used at or near its maximum f/1

The resulting bright field of view delivers true-to-life natural colours

The newly developed SR lens element is a high- and specialized-dispersion glass with breakthrough light-refracting properties that specifically target shorter color wavelengths like blues and violets for highly precise chromatic aberration compensation

with the added attraction of an in lens CPU for electronic metering

Leofoto SF-01 Lens Foot for Sony 70-200 f2.8 GM & 100-400 f4.5-5.6 GM 241XL particularly when it's used atThe Leofoto SF 01 is a replacement lens foot for select Sony telephoto lenses that features an integrated Arca type dovetail mount, safety stops, and both 3 8" 16 and 1 4" 20 threaded mounting holes. The SF 01 is compatible with the Sony FE 70 200mm f2. 8 GM & FE 100 400 f 4. 5 5. 6 GM OSS lenses.