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17-70mm lens (Pentax or Tamron advice please)

Started Nov 26, 2020 | Discussions thread
Kobie M-C
Kobie M-C Contributing Member • Posts: 701
Re: 17-70mm lens (Pentax or Tamron advice please)

There's 3 versions of the SIgma 17-70 series of lenses.

V1 = 17-70 F/2.8-4.5 DC Macro

V2 = 17-70 F/2.8-4 DC Macro HSM

V3 = 17-70 F/2.8-4 DC Macro HSM "C"ontemporary.

I personally have the V2 and I've found it to be a very versatile, tack sharp, smooth bokeh producing lens. The ONLY things are that it's not weather sealed, and in backlit situations with the light hitting the lens at the right angle, it severely struggles to nail focus unless you have the lens hood on to block some of the light. This is definitely a lens that absolutely requires its hood.

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