08-01-2018 10:17 AM
" I used 70-200 @200mm and the moon came out pretty small."
If you want a nice size or frame filling Moon, you need a FL in excess of 1000mm. However, that is impractical for most DSLR owners. The best commonly available lens is one of the 150-600mm super zooms. And, use it at the 600mm FL end.
08-01-2018 10:21 AM
BTW like your "...70-200 @200mm and the moon came out pretty small.", owning one of the 150-600mm super zooms offers more flexibility and uses than a specific one use 1000+mm lens and associated gear to hold it properly.
08-01-2018 10:39 AM
@curious what focal length is best for taking photos of the moon? I used 70-200 @200mm and the moon came out pretty small.
Ideally, greater than 1000mm looks good (the moon occupies a respectable area of the frame) but not more than 1500mm (you can use 1500mm ... it’s tight fit but you can just barely fit it in the frame).
But as Ernie points out... there are no commonly available lenses (Canon or 3rd party) in that focal length range. I do this using telescopes instead of lenses.