A70 37 or 52 mm lenses?

I have an A70 and want a telephoto lens. I have seen the 37 mm lenses and adaptors. Is there a down side to getting these? I like the idea that you can keep the adaptor on and not significantly block the flash like the 52 mm adaptors.

Everyone says they are better. I bought the 52 mm one. I wouldn't recommend them.

--Don

I also bought the 52mm adapter and use with filters and the teleconverter. I leave the adapter on the camera all the time except when I need to use the flash (mostly indoors). The 52 mm adapter does cause a problem with the flash in the bottom right hand corner. I was able to pick up a 52mm second hand teleconverter cheap so I suppose that compensates for having to take off the adapter occassionally. The 37mm size looks the way to go.

I use the 52 mm on my A85 and I also have an external slave flash with a bracket that I bought on Amazon. I never have a problem with it. Never had an experience with the 37 mm one.

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