Third Party Lenses

Sigma 85 1.4 Pricing & MTF

Canon Rumors

Posted onMay 28, 2010 at 3:36 PM

Updated onUpdated on May 28, 2010 at 6:03 PM

The Sigma 85 f/1.4
You can preorder this lens from Amazon.

Preorder for $899 USD

Thanks Jackola

cr

Canon Rumors

• View all 7201 articles
• Website

32 responses to “Sigma 85 1.4 Pricing & MTF”

1. IIRC, 1 stop difference is defined when the difference in the aperture area is 2 times (or 100% bigger in other words).

   Here:

   (1.8 * 1.8 – 1.4 * 1.4 ) / (1.4 * 1.4) = 65.3%

   I’d say the difference is in between 1/2 and 3/4 stops.

2. I have sigma 50mm F1.4 for my Nikon cameras, the lens is awsome, I will buy 85mm F1.4 for Canon

Related posts