| Canon EF 50mm f/1.4 USM Specifications | |
| Frame Coverage | 35mm |
| Lens Construction (groups) | 6 |
| Lens Construction (elements) | 7 |
| No. of Diaphragm Blades | 8 |
| Minimum Aperture | 22 |
| Closest Focusing Distance | 0.45m (17.7") |
| Maximum Magnifcation | 0.15x |
| Filter Diameter | 58mm |
| Maximum Diameter x Length | 73.8mm x 50.5mm (2.9" x 2") |
| Weight | 290g (10.2oz) |
Reviews
Source
DPReview.com
The Canon EF 50mm F1.4 USM may be based upon a 37-year old optical design, but its performance in our studio tests clearly shows that it's not giving up yet. Sure the hairs are beginning to grey a little, and Sigma's new young pretender can outmuscle it comprehensively at wider apertures, but this lens really shows its quality once the aperture is closed down a couple of stops.
Peter Kun Frary
The EF 50 1.4 USM is the low light specialist, the EF 50 1.8 is the general purpose optic and the EF 50 2.5 Compact Macro is optimized for close-up work. However, build quality and AF speed are similar between the lenses.
NaturePhotographers.net
If you’re searching for a versatile lens that is compact, extremely fast, and offers the highest imaging performance, the 50mm has always been and will continue to be an excellent choice. And the Canon 50/1.4 USM may very well be the best of the breed.
Photo.net
Is there any difference between these 2 lenses other than the price and f-stop? This is a common question that pops up frequently on forums everywhere. While the general consensus is that these 2 lenses are almost identically sharp, there are other factors that have not been fully explained or readily available.
Photo.net
Canon's 50/1.4 is a bit heavier than the 50/1.8 but it gives you simultaneous AF/MF because of its USM focusing motor. It is one f-stop slower than the 50/1.0 but much lighter weight and less than one-sixth the price.
PhotoZone.de
The EF 50mm f/1.4 USM showed an almost flawless performance during the lab- and field-tests both in terms of optical and mechanical quality. If I had to list a few negative points it would be vignetting and low contrast at f/1.4.
