Review on Canon EF 50mm f/1.4 USM lens, black by Petar Hristov ᠌

There are further drawbacks: 1) External focusing (the focusing unit leaves, the so-called "trunk") makes the lens more susceptible to moisture and dust than lenses with internal focusing (for example, the same Canon EF 28 f/1.8 USM - internal), and it also likely has a negative impact on the problem with geometric aberrations. 2) For general photography, such as sharp landscapes and macro shots, the sharpness that is ideal for portraits (not too low to make it "soapy" and not too high to avoid dignity No. 6) becomes insufficient. Here, it's important to make it clear that we're not talking about sharpness at a wide aperture, but rather geometric aberrations. For instance, a picture of the Moon taken with a kit lens like the Canon EF-S 18-55 f/3.5-5.6 IS at f/5.6 aperture at 50 mm FR is sharper than a picture taken with this fifty kopeck at f/10 aperture. Additionally, this lens is not as crisp as, for instance, the Canon EF 28 f/1.8 USM. 3) Although it is not supplied, a lens hood is quite helpful for protection and anti-glare purposes. 4) The physical aperture is still small, even smaller than the thread diameter for 58 mm filters (not to be confused with the aperture due to the aperture value), which has an adverse effect on the image quality when shooting in challenging conditions and displaying at 100% scale on high-megapixel matrices. Additionally, more light is gathered and optical resolution is improved with larger diameter glasses. Its flaws make it less effective as a universal lens (apart from the obvious lack of a full lens hood).