This larger projected imaging circle means a better chance of covering most of, if not the whole sensor, and reduce the need to use the built-in “35mm Crop Mode.” While handy, it does reduce output from 51.4MP to 31MP. Sigma has designed their Art lenses to cover a larger imaging circle this increases the area of the sharpest part of the lens, the center.
They’re no longer just great for the price they’re simply great. Now for “why” I’m choosing Sigma lenses with Canon EF mount: Sigma’s Art primes have been getting stellar reviews for their more strategic compromises. The GFX system just isn’t mature enough to have grown both a complete lens lineup or a diverse used lens market. Other benefits: 35mm lenses are much cheaper, especially used, and SLR lenses usually have direct focusing helicoids unlike the “drive by wire” systems seen on most mirrorless lenses. I’m hoping to print a few of these so what counts for “sharp” on the web doesn’t work at 20″ print sizes. It’s not that I’m a bokeh whore it’s that I need more light gathering for astrophotography and Fujifilm’s widest lens, a 23mm, has a maximum aperture of ƒ/4 and that’s just not going to work without a star tracker due to the sensor’s 51MP resolution. Fujifilm’s lineup is sparse at best, and apertures wider than ƒ/2 aren’t represented. Let’s begin with a personal “why”: I’m choosing to use Sigma lenses to obtain focal lengths and apertures not currently offered in the GF lens lineup. I’d like to break this down into three “Y’s.” Here’s my chance for an introduction to give my rationale and to lay the foundation of this endeavor. As I have alluded to in a burst of recent posts, I am planning to generate a small database of lenses for use on the Fujifilm GFX series.
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