I do use that lens as well as the
100mm macro. I love the
65mm despite all its weirdnesses but the distance to the subject is very, very small and that makes its use for aquarium photography pretty limited. Pretty tough to do insect photography, too, but the challenge is all part of the fun, right?
Both lenses,
IMO, really can only shine when you upgrade the flash, too. The onboard flash is pretty useless for macro. It has enough power (any light at all focused on such a small subject is pretty overpowering), but its positioning is horrible. You really need to get the light out away from the lens so you don't get bad shadows.
You also need to play a lot with manuals settings with the
65mm lens. The onboard light meter will _never_ tell you that you're getting enough light for exposure. You have to just ignore that and try a lot of different exposures. The light meter always tells me I'm underexposed, but if you take the photo anyway, the camera's software will try to compensate for the lack of ambient light with the flash. (My theory is that the camera's software is designed to save power whenever possible, so it _always_ tries to only use the flash as fill light. But if you force the software past that point, it _will_ do what it can to salvage your photo, even at the expense of running out the batteries quickly. I use a supplemental battery pack (rechargeable) for my flash unit and then push it hard.) So it's a lot of trial-and-error.