300mm lens, Sony or Tamron?

Started 8 months ago | Discussions thread
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LowRyter
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300mm lens, Sony or Tamron?
8 months ago

My Sigma 70-300 is on it's last legs.  The focusing mechanism isn't free.  It has several tight spots that cause the it to hang up and jerk.  It's still able to focus at full range but it jerks badly.  I tried to focus it manually and I can feel several rough spots.  I assume the gears are stripping out.  My guess is the A57 is just too fast focussing vs my old a100.

So would you recommend the new Sony 55-300 or the equivalent Tamron?

thanks

 LowRyter's gear list:LowRyter's gear list
Sony Alpha DSLR-A100 Sony SLT-A57 Sony DT 18-70mm F3.5-5.6 Tamron SP 70-300mm F/4-5.6 Di VC USD Sigma 17-70mm F2.8-4 DC Macro OS HSM +2 more
Sony SLT-A57
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