Standard Zoom Lenses

Standard zoom lenses start at 17 or 18mm for DSLRs and at 24 or 28mm for 35mm SLRs. Most of the zooms end at between 50 and 75mm. Some of the lenses finish at around 120 or 135mm - as these are designed for 35mm cameras I have classed them as standard zooms and not superzooms.