« on: October 24, 2013, 05:49:03 AM »
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You made me check the link ... it's 60mm f/1.8.
The link mentions that the patent is for cine / video lenses but most interestingly, doesn't mention whether or not the lenses have IS.It seems that some high quality fast prime lenses (50mm f/1.2, 50mm f/1.4 - there is also an 45mm f/1.6 and a 60mm f/1. are in the pipeline at Canon. I am not sure though (from translation) that they are EF lenses. See at
The original source: http://egami.blog.so-net.ne.jp/2013-03-29
Yes. As long as it is tack sharp across the frame @ all focal lengths, just like the Nikon 14-24.
All the discussion in this forum about the 5D3 in low light has me intrigued. I'm particularly interested in a 5D3 w/24-105 f4L IS as an upgrade path for a 7D w/17-55 f2.8 IS. (For low light candids, I'm often shooting at 1/30 second and find IS to be a must.)
I know that the 5D3 offers greater color depth and that full frame is typically sharper than crop. I also understand that the 5D3 offers about a 1.3 stop advantage in noise over the 7D. But, I'm comparing a crop body with a 2.8 lens to the full frame with a 4.0 lens and this noise advantage drops to about 1/3 of a stop.
Now the question. A 2.8 lens lets in more light than a 4.0, which is more light for the AF system to lock in. So which system can lock in on focus at lower light -- the 5D3 w/24-105 f4L IS or the 7D w/17-55 f2.8L IS?
throw in the stabilization and much lower price this lens is certainly worth considering if you don't have the budget for Canon's latest or the Nikon.
It also beats Canon's f/4 offering at a similar price point.
Anyone been using it? How is it working for you.. subjectively?
Other than it's less-consistent across-the-range performance and likely less rugged build than the Canon, I don't see much for drawbacks to the Tamron for shooters who don't need best-in-class gear in this range.
I have the Tokina. Fast & sharp. Really sharp. Big & heavy too and will flare just a bit if the light source catches from the side. Highly recommended for landscapes and really shines on low light interiors. Don't underestimate the weight, on a 5D3 it's quite a neckfull.