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<blockquote data-quote="pforsell" data-source="post: 614055" data-attributes="member: 7240"><p>The Tamron G2 has severe focus breathing, it is about 115 mm at 200 mm setting at the minimum focusing distance. The G1 is a bit better clocking at 140 mm. These numbers are published by Mansurov and Bob Atkins and others. What's weirder is that the G1 is only 188 mm at infinity. The G2 also reportedly has much improved autofocus speed, the dismally slow micromotor in G1 makes the autofocusing experience torturing.</p><p></p><p>Of the three Nikkor versions the VR II is the heavy breather, being about 135 mm at MFD. The VR I and the E FL don't breathe much and this was one reason why I skipped the VR II altogether and stayed with the VR I up to this point. Now I'm getting the E FL.</p></blockquote><p></p>
[QUOTE="pforsell, post: 614055, member: 7240"] The Tamron G2 has severe focus breathing, it is about 115 mm at 200 mm setting at the minimum focusing distance. The G1 is a bit better clocking at 140 mm. These numbers are published by Mansurov and Bob Atkins and others. What's weirder is that the G1 is only 188 mm at infinity. The G2 also reportedly has much improved autofocus speed, the dismally slow micromotor in G1 makes the autofocusing experience torturing. Of the three Nikkor versions the VR II is the heavy breather, being about 135 mm at MFD. The VR I and the E FL don't breathe much and this was one reason why I skipped the VR II altogether and stayed with the VR I up to this point. Now I'm getting the E FL. [/QUOTE]
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