From my perspective, 65mm is an ideal fast aperture focal length. But I want bokeh to be amazing, even if it means sacrificing some edge and corner resolution. I also would sacrifice performance for keeping the size manageable.
65mm is not a focal length I ever considered. Sigma is unlikely to sacrifice performance in such a halo lens. So expect it to be big. Math says it could theoretically be ~2/3 the size of the 135 f/1.4. Perhaps one kilo (without the hood).
jeffbuzz wrote:
65mm is not a focal length I ever considered. Sigma is unlikely to sacrifice performance in such a halo lens. So expect it to be big. Math says it could theoretically be ~2/3 the size of the 135 f/1.4. Perhaps one kilo (without the hood).
Theoretically, it could be about ½ the length and same width as a 135/2. To me, that would be reasonable for an f1 lens. One of my favorite street focals back in the day, was the 50/1.4 Lux on the Leica M8, whose sensor had a 1.3x crop…
I'd buy it, as long as it was as sharp as their 50 1.2 and 85 1.4. I shot 85mm last year for senior portraits and 50mm this year. Never thought I'd like 50mm so much, so a middle ground might be fantastic for me.
Sigmas, especially the ART's are known to run heavy. My hope is they re-think this for the upcoming fast glass. Sony has made big strides in size and weight while maintaining/improving performance as has Tamron, which may be sister philosophies now that the companies are becoming coupled.
The Sigma 135/1.8 weighs 1200gm and is 141mm long, 91mm wide. HUGE. I expect width to be close to this, perhaps a few mm narrower, and length roughly half, hopefully a little less. But I'd hope weight could be trimmed to 450gm or less and not half at 600... If it's 600gm, that's a lot for a prime and I might pass. If it's closer to 450, I'll probably be in. Well, I'd be in assuming I can afford it! We will see.
