Excerpt: The Canon EF 28mm f/1.8 lens was evaluated for use in wide field astrophotography. The following information on resolution and 50% MTF is applicable to all photographic uses of the lens. Astrophotographs demonstrated that the lens gives good performance (minimization of coma and aberrations) if stopped down to f/4.
Excerpt: Handling and features This classic wide angle prime from Canon provides a wide angle field of view, fast, silent focusing and a bright f/1.8 maximum aperture. With this lens costing around £380, could it be the perfect budget solution for hand held low light shooting?
Summary: Canon EF 28mm f/1.8 USM held a lot of promise on paper - a well performing fast wide angle prime, with silent and accurate AF system in a compact and light format that is affordable to a mainstream photographer. Unfortunately, in the real life the lens does not come even close to all these promises.
Excerpt: This classic wide angle prime from Canon provides a wide angle field of view, fast, silent focusing and a bright f/1.8 maximum aperture. With this lens costing around £380, could it be the perfect budget solution for hand held low light shooting?
Pros: Good build quality, Compact, Reasonably lightweight
Cons: Poor optical performance at fast apertures, CA at fast apertures, Price versus performance doesn't add up
Excerpt: Originally posted 2010-04-12 on Optyczne.pl One of the oldest lenses in the Canon’s current line-up is an EF 28 mm f/1.8 USM model, as it was launched on the market in September 1995. Why the company doesn’t see any need to introduce its successor? It would be, after all, a lens with very interesting parameters, an excellent partner for a full frame camera and that with an APS-C sensor as well.
Cons: weak image quality at the maximum relative aperture,, low resolution at the frame edge of an APS-C and full frame sensor alike,, quite significant chromatic aberration,, huge coma,, unsatisfactory accuracy of the focusing mechanism.
Conclusion: The Canon EF 28mm f/1.8 USM disappoints on the APS-C format. It is a full format lens yet the border quality leaves something to be desired even when stopped down. The fairly heavy amount of lateral CAs reduces the subjective quality perception even further. However, the center quality is actually very good. From a real world perspective this characteristic may still be fine.
Canon EF 28mm f/1.8 USM - Full Format Review / Test
8 June 2010
Conclusion: The Canon EF 28mm f/1.8 USM is not a great lens but from a real world perspective it is not all that bad. At large apertures the center is very sharp - and that's probably the priority spot at such settings anyway. However, the border and corner performance is certainly disappointingly low here. The situation isn't all that bad anymore at f/2.8 and the quality is actually decent at medium aperture settings.
Conclusion: Generally the verdict for the Canon EF 28mm f/1.8 USM cannot be better than for its Sigma counterpart - high center performance but substantially worse borders. This is more so disappointing because this full frame lens was tested on an APS-C DSLR. The sweet spot effect has a positive effect on vignetting which is nothing to worry about. The distortion figures are pretty low but chromatic aberrations are hefty comparable to ultra-wide zoom lenses.