Margus
TPF Noob!
- Joined
- Dec 13, 2011
- Messages
- 1
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- Location
- Tallinn
- Can others edit my Photos
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Hi!
Extenders as we know increase lenses reach at the cost of losing quite a bit of light. This makes sense, as to retain a particular f-stop as the focal length increases so must the lens itself get bigger.
So with the 2x extender, 70-200mm f/2.8 becomes effectively 140-400mm f/5.6
I was wondering if there is an inverse extender... like 0.5 extender, which would make it 35-100mm f/1.4
Now when I see the numbers, the quality would not be so wonderful I guess...
Extenders as we know increase lenses reach at the cost of losing quite a bit of light. This makes sense, as to retain a particular f-stop as the focal length increases so must the lens itself get bigger.
So with the 2x extender, 70-200mm f/2.8 becomes effectively 140-400mm f/5.6
I was wondering if there is an inverse extender... like 0.5 extender, which would make it 35-100mm f/1.4
Now when I see the numbers, the quality would not be so wonderful I guess...