Originally posted by naldopr Hi just new to macro and wondering if any one here can direct me I have 3 lenses that I have been getting through friends and they are Pentax SMC A 50mm 1:2 a Vtg Sears Zoom 80MM-200MM F;4.0 Macro And a Pentax DA 50mm 1.8 can Any of you tell me what size reverse ring and extension tube for this set up to work as other do? Will like to try before I spend on the 100mm WR macro lens thank you any suggestion to get what I need will be appreciate
The DA 50 is not a great candidate for extension and/or reversal because, like all DA lenses, it depends on having full electrical connection with the camera to operate normally. You could, however, reverse the A 50 onto it for a quick 1:1 macro setup, requiring only a "macro coupling ring" with the correct filter threads (52mm on one side and 49mm on the other).
More versatile options include putting a "close-up filter" such as a Raynox on the 80-200, or putting the A50 onto a bellows.