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03-30-2014, 01:21 AM   #16
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Apologies to Tamron , no The Tamron lenses I have or had all reported correctly in lightroom.
I also have had but it got very sticky and then the electrical contacts internally died a Tokina 28-70 f2.8 that was sharp at 2.8 and I have a older manual 2.8 Tokina 135 that is very sharp and a Tokina A series 70-200 that is a not a 2.8 but is sharp wide open


Last edited by adwb; 03-30-2014 at 06:02 AM.
03-30-2014, 03:10 AM   #17
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QuoteOriginally posted by adwb Quote
Apologies to Tamron , no The Tamron lenses I have or had all reported correctly in lightroom.
Thanks - I thought the Tamron 70-200/2.8 was fairly good at f/3.2 or f/3.5, but I don't own one so I wanted to clarify that with you.
03-30-2014, 06:10 AM   #18
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QuoteOriginally posted by DSims Quote
Thanks - I thought the Tamron 70-200/2.8 was fairly good at f/3.2 or f/3.5, but I don't own one so I wanted to clarify that with you.
I thought I would clarify my post a bit,
Every third party lens I have ever owned or still own at 2.8 is soft if you crop hard or zoom in.with the exception of the Tokina 2.8 28-70 if you can find one buy it.

That said at weddings at 2.8 the Tamron 2.8 70-200 has constantly produced very acceptable images and I have never had a complaint about the quality.
Every Sigma I have had has never reported correctly the brand and is not found in lens correction automatically in LR

Every Tamron has reported correctly and is found in the lens correction module.
03-30-2014, 06:17 PM   #19
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QuoteOriginally posted by DSims Quote
Does this include the Tamron?

Anyway, this is generally what I've found, and it's why Pentax/Sony/Nikon/Canon glass is usually better and costs more. But sometimes Tokina glass can be an exception to this rule.
At least with Pentax, Pentax-branded lenses are sometimes designed/built by Tamron or some other 3rd party, so the name Pentax on the lens doesn't necessarily mean anything. I don't know if that's the case with the other brands.

03-30-2014, 07:25 PM   #20
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QuoteOriginally posted by adwb Quote
Every third party lens I have ever owned or still own at 2.8 is soft if you crop hard or zoom in.with the exception of the Tokina 2.8 28-70 if you can find one buy it.
Of course this is a reflection on which third-party lenses you own, not on the quality of third-party lenses in general.

The Sigma 70/2.8 EX DG MACRO lens, to name just one example from Sigma, is tack sharp wide open (f/2.8) already. BTW, it gets reported correctly by Lightroom.

The Samyang (Rokinon/Bowers/Polar/Vivitar/...) 85/1.4 lens is also very sharp wide open at f/1.4. Much, much sharper than the Pentax FA 50/1.4 at f/1.4.

Sigma has produced some terrible lenses in the past, but recently has produced excellent lenses with outstanding optics and a very good value for money ratio.

To cut a long story short: There are bad and excellent third-party lenses.
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