I purchased the Canon 10x30IS binoculars last summer as a second pair of binoculars for astronomy and wildlife. The 10x30IS binoculars are excellent. I consider then a good value because of the Image stabilization.
Although my work is optics related, I'm still an inexperienced observer. With second set of binoculars, my fiancée and I didn't have to share binoculars on an African Safari Vacation. And we can both scan the Milky Way at the same time. When my fiancée and I observe together, she always chooses the 10x30IS. If I'm on my own, I use the Canon's half of the time instead of my 7x50 Ultraview.
For observing details, the 10x30IS binoculars are great. The image stabilization (IS) can make a big difference during the day. IS even more noticeable when looking at stars and planets.
The optics are good. The images are sharp. Although I've seen better color in images when comparing side by side to binoculars with a larger objective aperture, more detail can be seen in the 10x30 due to the IS. During really critical daytime observation, there can be brief periods of softness while the IS corrects for hand shake, but these last about one second, and are normally not noticed.
Eye relief is tight with my glasses, but I find the 10x30IS are usable with the eyecups folded down. Ironically, I have also tried Canon 15x50 IS binoculars and found the eye relief too short despite a longer specification.
Due to the 6 deg FOV, It does take a moment longer to acquire a fas...