Purchased the tube a week ago from eBay for less than $12, free shipping from Hong Kong. It gives me more reach to the subjects, increased the focus range from 5cm to infinity. Post few shots that taken by FA50 with the tube.
#1. The tube
Brought this lens from a local seller last winter since he switched to Nikon. The lens stays with me about eight months. Since I brought DA*, this lens had no chances to mount on my camera. Selling to raise fund for the next purchase. Maybe a macro/fish eye lens or ball head for my monopod. This copy is sharp at wide open. It is an underrated lens compare to its price in my opinion.
Here is my conclusion:
#1. DA 50-200mm at 50mm, F4.0
#2. DA* 50-135mm at 50mm, F2.8
#3. DA* 50-135mm at 135mm, F2.8
#4. DA 50-200mm at 138mm, F4.5
#5. DA 50-200mm at 138mm, F4.5
#6. DA* 50-135mm at 135mm, F2.8