IS data re-run with Neuro's advice in mind. A solid 2s run-up with the IS was used for each shot.
New IS data below. Same non-IS data as before.
1) IS OFF at 16mm, I netted:
- 3 out of 5 sharp shots at 1/15s exposure
- 2 out of 5 sharp shots at 1/8s exposure
- 1 out of 5 sharp shots at 1/4s exposure
2) IS ON at 16mm, I netted:
- 5 out of 5 sharp shots at 1/15s exposure
- 5 out of 5 sharp shots at 1/8s exposure
- 4 out of 5 sharp shots at 1/4s exposure
- 2 out of 5 sharp shots at 1/2s exposure
- 1 out of 5 sharp shots at 1s exposure (two borderline ones were called 0.5 each)
3) IS OFF at 35mm, I netted:
- 5 out of 5 sharp shots at 1/60s exposure
- 4 out of 5 sharp shots at 1/30s exposure
- 1 out of 5 sharp shots at 1/15s exposure
4) IS ON at 35mm, I netted:
- 5 out of 5 sharp shots at 1/60s exposure
- 5 out of 5 sharp shots at 1/30s exposure
- 5 out of 5 sharp shots at 1/15s exposure
- 4.5 out of 5 sharp shots at 1/8s exposure (a borderline one was called 0.5)
- 3.5 out of 5 sharp shots at 1/4s exposure (a borderline one was called 0.5)
- 2 out of 5 sharp shots at 1/2s exposure
- 0.5 out of 5 sharp shots at 1s exposure (a borderline one was called 0.5)
I'll be damned. Neuro's trick shows 16mm IS is more like a 2 stop benefit, but the 35mm data only slightly improved (still around 3 stops).
Neuro, is this true with all IS lenses? That might imply sports guys with long glass never net as sharp a shot with the first frame in a long burst that they might get with the rest...
- A