What's A Fast Lens?

[Brackish]

Canon didn't make a manual-focus sound 310XL, did they?

And what type of subject matter would *not* reflect infrared light?

The only Nizo sound cams I see are f/1.8. Is that the fastest lens

on a Nizo?

[christoph]

Canon didn't make a manual-focus sound 310XL, did they?

nope, not that i'm aware of

And what type of subject matter would *not* reflect infrared light?

well, a lot of black items will still be black in the infrared spectrum... blue stuff could also be tricky.. but generally it's hard to know exactly how an object reacts to infrared light (blue sky for example contains very little infra red light.. green foliage reflects a lot etc)

The only Nizo sound cams I see are f/1.8. Is that the fastest lens
on a Nizo?

most of the sound cams have 1.4 i think.. the 4080, 6080, 6056 at least... the non-sound often have 1.8 (the 800, 801, professional etc)

++ christoph ++