The TA44-C comes in with the largest exit pupils, at , but is closely followed by the TA11 and the TA33, which measure in at 10mm. The TA31 measures comes in last at 8mm. In all honesty though, 8mm is still very generous, but it does seem to make a difference in the speed of acquiring proper head/eye alignment with the scope. Another benefit of a larger exit pupil is that it can alleviate eyestrain, but I haven’t found that this happens in any of the scopes. Overall, I wouldn’t put too much emphasis on this attribute, but it can be a contributing factor…..namely eyebox forgiveness.