|Canon EF 24-70mm f/4L IS and EF 35mm f/2 IS USM lenses|
The Canon Museum has published a technical paper on the EF 24-70mm f/4L IS and EF 35mm f/2 IS lenses. You can read the report by visiting the Canon Museum website.
The EF 24-70mm f/4L IS and EF 24-105mm f/4L IS lenses are two of my favorite Canon lenses and have a semi permanent space in my equipment bag, depending on type of photo shoots. Visit my website MichaelDanielHo.com to see wildlife and travel photos taken with both lenses.