The 28-105 f/3.5-4.5D is an excellent all-round lens. It's desirable to use with a full-frame camera, but it also works well with a Dx body. The 3.75x zoom range is sufficient for most situations and the additional 1:2 macro capability makes this lens exceptionally valuable. Not to mention that it's incredibly sharp at all available apertures. For field work I carry 17-35, 28-70 and 70-200 lenses (all f/2.8) but for easy hanging of the lens I use 28-105 f/3.5. . . . . bgs.
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review
Black Canon EF 24-105mm f/4L IS II USM Lens - Model 1380C002
78 Review
Nikon 35mm f/1.8G Auto Focus Lens for Nikon DSLR Cameras - Black (Model 2183)
125 Review
Canon EF 40mm f/2.8 STM Lens - Fixed Black (6310B002) for US Cameras
76 Review