Whether a comic adaptation is canon can vary. It often depends on factors like the creators' intentions, how closely it adheres to the original story, and the consensus within the fan community. Some adaptations are almost identical to the source, making them clearly canon, while others might introduce new elements that raise questions about their canonicity.
It depends on the specific comic and the source material. Sometimes it's a direct and faithful adaptation, making it canon. But in other cases, there could be significant changes that might make it not strictly canon.
It's not always straightforward to determine if a comic is canon. Sometimes, it might follow the main plot and key elements precisely, earning the label of canon. However, if it strays too far or contradicts established lore, it might not be considered canon by fans and experts alike.