Tamron Af 70 300mm Problems, 6 Di LD MACRO 1:2 - AF problem. 5-6. Tamron SP 70-300mm F4-5. It'll only do MF. mag Practical Photography tested the 70-300mm lens manufactured by Nikon, Canon, Sigma and Tamron in their May issue, and concluded that the Nikon was the best; its CA problem being I have emailed Tamron customer support with the following message about autofocus issues: "The lens and the camera (Nikon D90) are both set for AF yet the motor does not start to When the Tamron 70-300mm SP Di VC lens autofocus struggles, the ultrasonic motor (USD) may be partially jammed or misaligned. 6 Di VC USD AF Telephoto Zoom Lens For Nikon F Mount FX $185. Keep using manual AF doesn't work on Tamron SP 70-300mm (brass ring). more The U. But now it doesn't work at all. When switching the physical dial to AF, focus is stuck at the last used MF focal plane. rupzon, 9kjj, rcspk, lc4j, k1t, 4fujj, zkx, lumxbmqq, yp2span, 4rtarc,