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This chart lists the Speed (T-Stop) of all variations of our lenses. For video applications, use the 16mm numbers.
Lens System |
Format |
Angle of View |
T Stop Open |
T Stop Closed |
Available T Stops |
2.8 |
3.3 |
4 |
5.6 |
6.3 |
8 |
11 |
16 |
22 |
32 |
45 |
64 |
HD Probe |
HD |
Direct View |
3.3 |
22 |
|
x |
x |
x |
|
x |
x |
x |
x |
|
|
|
|
|
90 Degree |
3.3 |
22 |
|
x |
x |
x |
|
x |
x |
x |
x |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Probe II+ |
16mm |
Direct View |
3 |
22 |
|
|
x |
x |
|
x |
x |
x |
x |
|
|
|
|
|
90 Degree |
3 |
22 |
|
|
x |
x |
|
x |
x |
x |
x |
|
|
|
|
35mm |
Direct View |
6.3 |
32 |
|
|
|
|
x |
x |
x |
x |
x |
x |
|
|
|
|
90 Degree |
6.3 |
32 |
|
|
|
|
x |
x |
x |
x |
x |
x |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Probe II |
16mm |
Direct View |
2.8 |
22 |
x |
|
x |
x |
|
x |
x |
x |
x |
|
|
|
|
35mm |
Direct View |
5.6 |
22 |
|
|
|
x |
|
x |
x |
x |
x |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Probe I |
16mm |
Direct View |
8 |
32 |
|
|
|
|
|
x |
x |
x |
x |
x |
|
|
|
|
90 Degree |
8 |
32 |
|
|
|
|
|
x |
x |
x |
x |
x |
|
|
|
35mm |
Direct View |
16 |
64 |
|
|
|
|
|
|
|
x |
x |
x |
x |
x |
|
|
90 Degree |
22 |
64 |
|
|
|
|
|
|
|
|
x |
x |
x |
x |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6000 |
16mm |
Direct View |
28 |
28 |
Fixed T-28 with Built in Ring
Light |
|
|
45 Degree |
28 |
28 |
|
|
90 Degree |
28 |
28 |
|
35mm |
Direct View |
45 |
45 |
Fixed T-45 with Built in Ring
Light |
|
|
45 Degree |
45 |
45 |
|
|
90 Degree |
45 |
45 |
|