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| Producer |
Sigma |
Mamiya |
| Model |
AF 24-70mm F2.8 IF EX DG |
Sekor A 150mm f/2.8 M645 |
| Type |
Normal Zoom |
Telephoto |
| Lens Mount |
Minolta A |
Mamiya 645 |
| Diameter |
3.47 in (88.6 mm) |
2.92 in (74.5 mm) |
| Length |
3.71 in (94.7 mm) |
4.2 in (107 mm) |
| Weight |
1.7 lbs (790 g) |
1.6 lbs (740 g) |
| LENS SYSTEM |
| Lens Aperture |
F2.80 |
F2.80 |
| Focal length |
24 - 70 mm |
24 - 70 mm |
| Max View Angle |
34.30 - 84.10 deg/min |
26 deg/min |
| Auto Focus |
Yes |
No |
| Image Stabilization |
No |
No |
| Photographic Filter Diameter |
3.22 in (82 mm) |
2.63 in (67 mm) |
| Minimal Aperture |
F22 |
F22 |
| Minimal Focus Range |
0.38 m |
1.5 m |
| Number of Optical Lens Elements |
14 |
6 |
| Number of Lens Groups |
12 |
4 |
| Ultrasonic Motor |
Yes |
No |
| MISCELLANEOUS |
| Number of Blades in an Iris Diaphragm |
9 |
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| Compatible Cameras |
For digital SLR cameras Sony |
Mamiya 645 Pro TL |
| Macro Mode |
No |
No |
| Inner focusing |
No |
No |
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Also Compare Sigma AF 24-70mm F2.8 IF EX DG with:
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Also Compare Mamiya Sekor A 150mm f/2.8 M645 with:
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