Many lenses today have image stabilization (IS) in the lens. At least Canon and Nikon do this.
The Canon and Nikon systems allow one to use lenses intended for full frame cameras in their crop sensor cameras.
Now, if I have a full frame lens and crop sensor camera, does the crop of the sensor:
- Improve how image stabilization works?
- Negatively affect how image stabilization works?
- Leave the image stabilization unaffected?
I was thinking that if the lens has a significantly larger image circle than the sensor, the image stabilization system could perhaps have more room to work with, thus allowing correcting larger amplitude vibrations.
On the other hand, it may be the case that the lens designers did not anticipate potential use in crop sensor cameras, and therefore, don't fully utilize the benefits of the large image circle.
It also might be the case that an optimal crop sensor stabilizer should be optimized for smaller vibrations due to the small sensor size, at a given physical focal length, and therefore, a full frame stabilizer may not be as accurate and pixel-perfect, leaving very small blur at the pixel level.