Macro lens working distance

The numbers in this table have been collected from various sources. Some I measured myself, a few are from information provided by manufacturers, and most are gathered from forums and other sources on the 'net. Take them with a grain of salt.

Distance from filter thread to subject in centimeters. The table is ordered by working distance at 1:1.

Lens 1:2 1:1 Remarks
Micro-Nikkor AF-S 60mm f/2.8 G ED N 10.3 4.9
Mikro-Nikkor AF-S DX 40/2.8G 5.2
Nikkor 2.8/55 Micro AI-S 10.8 5.5 PK-13 extension tube for 1:1.
Nikkor 3.5/55 Micro 11 5.5 PK-13 extension tube for 1:1.
Voigtländer Macro APO-Lanthar 2/65 15.9 -
Sigma MAKRO 70mm F2,8 EX DG 13.7 6.35
Nikkor 2.8/60 Micro AF   7
Nikkor PC Micro 85mm f2.8 21 -
Tamron AF SP Di 2.8/90 Macro   9.9 Another source: 9.5 cm for model 272ENII.
Tamron AF SP 2.8/90 Macro   10
Canon MP-E 65mm - 10.1 1x - 5x. Working distance at 5x: 4.1 cm.
Nikkor AF 70-180/4.5-5.6 Micro @ 180mm 23 -
Pentax FA 2.8/100 Macro   11.1
Sigma AF 105/2.8 Macro EX   12 Another source: 12.5 cm.
Nikkor 2.8/105 Micro AF   13.6
Sigma 2.8/105 HSM EX DG OS   13.9
Nikkor 3.5/85 AF-S DX VR 14.1
Nikkor 2.8/105 Micro AF-S VR 14.5
Canon EF 100mm f/2.8 L IS USM Macro Lens 21.8 14.6
Canon EF 2.8/100 Macro USM 23.1 14.9
Contax Makro Planar J 2.8/100   15.5
Zeiss Makro-Planar T* 2/100 25 -
Canon FD 4/100 Macro + extension   16
Minolta AF 2.8/100 Macro   16.2
Nikkor 4/105 Micro 27 17.5 PN-11 extension tube for 1:1.
Sigma MAKRO 150mm F2.8 EX DG HSM OS   18.3
Voigtländer 2.5/125 31 19
Sigma MAKRO 150mm F2.8 EX DG HSM   19.4
Sigma AF APO Macro 5.6/180 39.7 -
Sigma 180mm F2.8 EX DG OS HSM   22
Sigma 3.5/180 HSM   22.8
Bellows Nikkor 4/135 35.9 22.8
Nikkor 4/200 Micro AI-S 49 23 Reversed Nikon 4T diopter used for 1:1.
Canon EF 180mm f/3.5L Macro USM 42.5 24
Tamron SP-AF180 F/3.5 Di 24.5
Nikkor 4/200 Micro AF 46 26
Canon FD 4/200 Macro 51.4 31.6