i like how quickly you can change lenses with their magnetized rims and with a minor alteration to my pelican case i no longer have too remove my cell phone protector case in order to use these camera lenses!
I am using this 2X extender with my 135L, and I must say that after a little micro adjustment of +5, this is incredible! I now have a 270mm f/4 lens, and the images are very, very nice. Wide open (f/4), there is a little softness or dreamy effect, but stopped down to f/5.6, images are extremely sharp and contrasty. Yes, this will enhance any flaw in your lens, but with higher quality lenses, should not be much of an issue. AF is fast, I have not had any problems with its speed or accuracy. Overall, I am extremely pleased with this extender.
Very much impressed with the performance of the lense. Everything about the care and shipment of this product was superb. Thank you Overstock for my pleasant first time purchase experience with you.
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