re lens
Thanks Humayan-how much are these 'Step-down adaptors' and were do you buy the from?
Sounds like there are two methods to use this lens for astro work,Which is good to hear.There is a chap that comes up here to observe,he has just bought one of these lenses,So I will have a chat with him about these suggestions.This is certainly not a high priority photography task-but the lens cost a lot,an d it would be good to use it on some other photography episodes.
The 70-200 range would be quite useful.
Thanks for all the advice by the many people-Chris
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