Pixalo Photography Community - View Single Post - 2x TC with Sigma 70-200/f2.8 vs Sigma 50-500

***Dave*** · 19-07-2006, 18:35

Thanks for sending the Pics DaveyUK. Bit hard to tell how good the convertor is , due to poor light conditions on day of the shoot. Have you ever tried a test shot of lens at say 200mm f/5.6 & then identical one with 2xTC & lens at 100mm at f/2.8, so same eventual focal length & equivalent f/stop ? Would be very interested to see the difference .

19-07-2006, 18:35	#5 (permalink)
*Dave* Pixalo Crew Join Date: Jul 2005 Posts: 14,892	Re: 2x TC with Sigma 70-200/f2.8 vs Sigma 50-500 Thanks for sending the Pics DaveyUK. Bit hard to tell how good the convertor is , due to poor light conditions on day of the shoot. Have you ever tried a test shot of lens at say 200mm f/5.6 & then identical one with 2xTC & lens at 100mm at f/2.8, so same eventual focal length & equivalent f/stop ? Would be very interested to see the difference .