
The Canon EF 600mm f/4.0 L IS II USM Lens is expected to be available in 2011 (Update: On Nov 15, 2011, Canon announced that this lens has been delayed until an unknown future date.
Update 2: On Jan 3, 2012, Canon USA informed me that this lens is expected to be available in April.
Update 3: The Canon EF 600mm f/4.0 L IS II USM Lens is now expected to be "available from May 2012").
A full Canon EF 600mm f/4.0 L IS II USM Lens review is planned upon availability of this lens.

| Model | Weight | Dimensions w/o Hood | Filter | Year | ||
| Canon EF 200mm f/2.0 L IS USM Lens | 5.56 lbs | (2520g) | 5.0 x 8.2" | (128 x 208mm) | DI 52mm | 2008 |
| Canon EF 300mm f/4.0 L IS USM Lens | 2.63 lbs | (1190g) | 3.5 x 8.7" | (90 x 221mm) | 77mm | 1997 |
| Canon EF 300mm f/2.8 L IS II USM Lens | 5.19 lbs | (2350g) | 5.0 x 9.8" | (128 x 248mm) | DI 52mm | 2011 |
| Canon EF 300mm f/2.8 L IS USM Lens | 5.63 lbs | (2550g) | 5.0 x 9.9" | (128 x 252mm) | DI 52mm | 1999 |
| Canon EF 100-400mm f/4.5-5.6 L IS USM Lens | 3.04 lbs | (1380g) | 3.6 x 7.4" | (92 x 189mm) | 77mm | 1998 |
| Canon EF 400mm f/5.6 L USM Lens | 2.76 lbs | (1250g) | 3.5 x 10.1" | (90 x 257mm) | 77mm | 1993 |
| Canon EF 400mm f/4.0 DO IS USM Lens | 4.28 lbs | (1940g) | 5.0 x 9.1" | (128 x 232mm) | DI 52mm | 2001 |
| Canon EF 400mm f/2.8 L IS II USM Lens | 8.49 lbs | (3850g) | 6.4 x 13.5" | (163 x 343mm) | DI 52mm | 2011 |
| Canon EF 400mm f/2.8 L IS USM Lens | 11.85 lbs | (5370g) | 6.4 x 13.7" | (163 x 349mm) | DI 52mm | 1999 |
| Canon EF 500mm f/4.0 L IS II USM Lens | 7.04 lbs | (3190g) | 5.7 x 15.1" | (146 x 383mm) | DI 52mm | 2011 |
| Canon EF 500mm f/4.0 L IS USM Lens | 8.54 lbs | (3870g) | 5.7 x 15.2" | (146 x 387mm) | DI 52mm | 1999 |
| Canon EF 600mm f/4.0 L IS II USM Lens | 8.65 lbs | (3920g) | 6.6 x 17.6" | (168 x 448mm) | DI 52mm | 2011 |
| Canon EF 600mm f/4.0 L IS USM Lens | 11.83 lbs | (5360g) | 6.6 x 18.0" | (168 x 456mm) | DI 52mm | 1999 |
| Canon EF 800mm f/5.6 L IS USM Lens | 9.86 lbs | (4470g) | 6.4 x 18.1" | (163 x 461mm) | DI 52mm | 2008 |
For many more comparisons, review the complete Canon EF 600mm f/4.0 L IS II USM Lens Specifications using the site's Lens Spec tool.
| Model | MFD | MM | |
| Canon EF 200mm f/2.0 L IS USM Lens | 74.8" | (1900mm) | 0.12x |
| Canon EF 300mm f/4.0 L IS USM Lens | 59.1" | (1500mm) | 0.24x |
| Canon EF 300mm f/2.8 L IS II USM Lens | 78.7" | (2000mm) | 0.18x |
| Canon EF 300mm f/2.8 L IS USM Lens | 98.4" | (2500mm) | 0.13x |
| Canon EF 100-400mm f/4.5-5.6 L IS USM Lens | 70.9" | (1800mm) | 0.20x |
| Canon EF 400mm f/5.6 L USM Lens | 137.8" | (3500mm) | 0.12x |
| Canon EF 400mm f/4.0 DO IS USM Lens | 137.8" | (3500mm) | 0.12x |
| Canon EF 400mm f/2.8 L IS II USM Lens | 106.3" | (2700mm) | 0.17x |
| Canon EF 400mm f/2.8 L IS USM Lens | 118.1" | (3000mm) | 0.15x |
| Canon EF 500mm f/4.0 L IS II USM Lens | 145.7" | (3700mm) | 0.15x |
| Canon EF 500mm f/4.0 L IS USM Lens | 177.2" | (4500mm) | 0.12x |
| Canon EF 600mm f/4.0 L IS II USM Lens | 177.2" | (4500mm) | 0.15x |
| Canon EF 600mm f/4.0 L IS USM Lens | 216.5" | (5500mm) | 0.12x |
| Canon EF 800mm f/5.6 L IS USM Lens | 236.2" | (6000mm) | 0.14x |
Canon's theoretical MTF charts strongly hint that the Canon EF 600mm f/4.0 L IS II USM Lens' image quality will be exceptional - like the other version II super-telephoto lenses being released in 2011.

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