Tamron 2X MC7 C-AF1 BBAR teleconverter
Review of Tamron 2X MC7 C-AF1 BBAR teleconverter. Review created 2005, latest update 2013.
Facts
- a typical seven-element 2x EF teleconverter
- estimated retail price 200 EUR
- in my use for several years
- as my requirements on image quality got higher I no longer had use for a teleconverter
Pros
- an easy and cost-effective way to double focal lengths (I used this with Sigma 70-300mm f/4-5.6 APO Macro Super II to shoot the moon)
- doesn't stop the body from autofocusing since body is uninformed that there is a teleconverter present (in bright light this really helps)
- gives better results than the cheapest 4-element teleconverters
- very simple to use
- very easy to carry around
Cons
- causes visible loss of saturation, contrast and sharpness even with primes
- many buyers expect miracles but there are none
- some lenses that have a protruding rear element can crash with this and ruin both