Example comparisons
What the comparison shows
Every lens is drawn with the length and diameter given by its manufacturer, all at the same scale and standing on a common baseline. The side view shows the length and the outer diameter, the front view the diameter and, as a dashed circle, the filter thread. The silhouettes are schematic, only the outer dimensions are to scale. A lens appears in the drawing only if the manufacturer states both its length and its diameter; nothing is estimated.
Where the figures come from
Length, diameter and weight are manufacturer specifications. As a rule, the length is measured from the lens mount flange to the front of the lens, for zoom lenses in the shortest state and without caps and lens hood; the diameter is the largest outer diameter. Not every manufacturer states how it measures, so small differences between brands are possible.
Frequently asked questions
Does LensFinder measure the lenses itself?
No. Length, diameter and weight are manufacturer specifications as stored in the lens database. Where a manufacturer states no value, it stays empty and nothing is estimated.
Why can a zoom lens be longer than shown?
Many zoom lenses extend when zooming or focusing, while lenses with an internal zoom keep their length. The drawing uses the manufacturer figure, which as a rule applies to the shortest state.
Do a larger size and a higher weight go together?
Not necessarily. Length and diameter only describe the outer dimensions, while the weight also depends on the materials and the glass used. Two lenses of similar size can differ clearly in weight, as the table shows.
Why is a lens in the table but not in the drawing?
A lens is drawn only if the manufacturer states both length and diameter. If one of the two is missing, the lens still appears in the table with the values that exist.