Third Party Lens Talk

Welcome to the Third Party Lens Talk Forum, the place to discuss interchangeable lenses from manufacturers such as Sigma, Tokina, Tamron, Samyang and Zeiss. Please do not use this forum to discuss cameras.

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Tamron SP 35 f/1.8 on Nikon D750 Tamron SP 35 f/1.8 on Nikon D750 $270 Bargain $270 Bargain
Good copy Samyang 14/2.8 Good copy Samyang 14/2.8 State of the ART State of the ART
Sigma 150-600 C @600 on Nikon D7100 and V2 with and without Kenko 1.4 Comparisons Sigma 150-600 C @600 on Nikon D7100 and V2 with and without Kenko 1.4 Comparisons Curious about DXOmarks results on Sigma 150-500 f5-6.3 with different formats Curious about DXOmarks results on Sigma 150-500 f5-6.3 with different formats
Colour me impressed (Sigma 15-600S) Colour me impressed (Sigma 15-600S) Venus Optics Laowa STF 105mm f/2 (T/3.2) Venus Optics Laowa STF 105mm f/2 (T/3.2)
Sigma 150-600 C BROKEN... what to do? Sigma 150-600 C BROKEN... what to do? What Mount is this What Mount is this
First Impression of the Sigma 150-600 C First Impression of the Sigma 150-600 C First impressions: Samyang 135mm f2- Nikon AE First impressions: Samyang 135mm f2- Nikon AE
Nikon 55-300 VR vs Sigma 70-200 2.8 + TC Nikon 55-300 VR vs Sigma 70-200 2.8 + TC Opteka 6.5mm Fisheye - first run - F8 & be done. Opteka 6.5mm Fisheye - first run - F8 & be done.
First impressions of using Tamron SP 70-300mm F/4-5.6 Di VC USD on Nikon D610 First impressions of using Tamron SP 70-300mm F/4-5.6 Di VC USD on Nikon D610 Technical Question: Unexpected Aperture Change Technical Question: Unexpected Aperture Change
Revisiting the Sigma 17-70mm f/2.8-4 "C" Revisiting the Sigma 17-70mm f/2.8-4 "C" Samyang/Walimex Pro/Rokinon 8mm unsharp at f3.5/5.6 ! Samyang/Walimex Pro/Rokinon 8mm unsharp at f3.5/5.6 !
Winter Birds Sigma 150-600C Canon 70D Winter Birds Sigma 150-600C Canon 70D Samyang 85mm 1.4 on Canon 6D Samyang 85mm 1.4 on Canon 6D
Kenko Teleplus MC4 AF 1.4 DG for my Sigma 500 EX DG APO Kenko Teleplus MC4 AF 1.4 DG for my Sigma 500 EX DG APO sigma 150-600S - is this back/front focussing? - on Canon 7D2 sigma 150-600S - is this back/front focussing? - on Canon 7D2
Sigma 17-50mm on Nikon D3300 Blue sunset
Critique requested
Sigma 17-50mm on Nikon D3300 Blue sunset
Recent bird shots with Sigma 150-600C+Nikon D800 Recent bird shots with Sigma 150-600C+Nikon D800
Tamron 35mm f/1.8 VC Overexposure issue Tamron 35mm f/1.8 VC Overexposure issue Tamron 24 70 for Nikon Tamron 24 70 for Nikon
Rokinon 14mm 2.8 - help seeing if the lens needs to be swapped Rokinon 14mm 2.8 - help seeing if the lens needs to be swapped Vivitar Series 1 28-105mm lens question Vivitar Series 1 28-105mm lens question
Tamron 15-30 inconsistent sharpness Tamron 15-30 inconsistent sharpness Vivitar 28mm 2.5 legacy lens question Vivitar 28mm 2.5 legacy lens question
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