if VC was off (or shutter speed slower), that shot would look sharp enough to cut your face.
I can find other examples, but I've noticed that with higher than 1/500 shutter speeds and if I leave VC on, the image is never as sharp as without VC on--It has a weird motion blur look to the image.
Just trying to reconcile all the differing info though. Like I said, Canon's engineers specifically say that their IS should be left on with a tripod (to combat mirror close vibration) and at high speeds (to help with autofocus). When I asked our rep when it should be turned off, he basically said "only if you're doing mirror up, or shooting above 1/1000." With so much contradictory info out there, it'd be really nice to see some actual testing done. I really trust all you guys' info, but I also trust my old Canon rep and the manual.Most studies were with previous gen IS. Far as I know the only huge step forward IS has taken is in the Canon 100mm macro IS which has a back/forward roll to its function. Otherwise far as I know newer IS systems are better; but not worlds better. Same tech but more advanced thus most of the previous elements still hold true.
Doesn't surprise me that there are no studies on this. It's not like it will cure cancer or bring about world peace. Do what you want with it.I really do appreciate all the replies, but it's kinda shocking to me that there doesn't seem to be any actual "scientific" studies of this, with A/B comparisons under controlled conditions.
I mean sure it's unimportant in the grand scheme, but there are roughly 29917284918177499172 tests on the ISO capabilities of the D810Doesn't surprise me that there are no studies on this. It's not like it will cure cancer or bring about world peace. Do what you want with it.I really do appreciate all the replies, but it's kinda shocking to me that there doesn't seem to be any actual "scientific" studies of this, with A/B comparisons under controlled conditions.
if VC was off (or shutter speed slower), that shot would look sharp enough to cut your face.
I can find other examples, but I've noticed that with higher than 1/500 shutter speeds and if I leave VC on, the image is never as sharp as without VC on--It has a weird motion blur look to the image.
I notice that the catchlights in the eyes look just a little bit strangely-shaped. The on-line image is not large enough to get a really clear look at them in really clear detail. I'm also aware that there has been some stuff written about how VR being on can affect lens bokeh, but I am also wondering is VC/VR/IS might also have some odd interaction with aspherical element lens designs. Comparing how her eyebrow area looks compared to the easter egg basket, the defocused are below looks "different" from the area on her brows...that looks blurred, smeared, odd to me. Can you see if the eye catchlights are perfect dots in other frames of that pose? It looks to me like the catchlights have three components to them, all very small, but the resolution of the sample image is not quite high enough to see them cathlights clearly enough to evaluate them with any certainty.
I have this lens and nowhere in the manual does it specifically say this. In fact on page 10 it states that when using a tripod under certain shooting conditions it may be better to turn IS off. It also says that for long (bulb) exposures that leaving IS turned on may introduce errors....I know that Canon's manual for the 70-200 f/2.8 IS II L lens specifically says that you should leave it on, even on tripods and high shutter speeds, as the lens's autofocus is designed to work with IS engaged and that they claim there is no benefit to turning it off anyway.
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I've done alot of testing with my lenses .. A/B. But when I was done comparing I just deleted all the test photos.I really do appreciate all the replies, but it's kinda shocking to me that there doesn't seem to be any actual "scientific" studies of this, with A/B comparisons under controlled conditions.