Entrance Pupil Database
Wouldn't it be great if everyone entered their values for their Nodal Point / Entrance Pupil for lens and camera combinations.
Some searching on the web will find a lot of people saying they want to start to create a database of some kind, but have not seen anything substantial so far (correct me if I am wrong).
Please enter your own values if they are not listed.
Thanks,
--Richard Korff 11:12, 13 May 2005 (EDT)
To cater for all the different camera bodies and lenses, the tables have been split into 2 parts.
The first table shows the position of the tripod mount in relation to the lens axis. This is easy to measure and is dependent only on the camera body The second table shows the actual entrance pupil distance which is only dependent on the lens itself.
Use as much as possible actual measurements rather than the reading on your panorama head, unless your are sure these are the same.
To enter a line for your combination, edit the page by clicking edit at the top of the screen (you may need to create an account or sign-in first), and edit the table below.
Tripod Mount Measurements
| Camera | Tripod mount off-center (C) | Tripod mount height (H) | Tripod mount length (L1) |
|---|---|---|---|
 |
 |
| |
| Use the correct name of your camera. For digital camera's, please use the name as mentioned at dpreview. | Looking at the bottom of the camera, the distance between the the middle of the tripod mount to the lens axis (0 if the tripod mount is over the centre of the lens) | Facing the camera, the distance from the base of the camera to the center of the lens | Looking at the bottom of the camera, the distance between the middle of the tripod mount to the base of the lens base. For fixed lens camera's this column is not applicable. |
| Canon EOS 300D / Digital Rebel (EOS Digital Rebel) | 0mm | 40mm | 40mm |
| Nikon D70 | 0mm | 42.5mm | 36mm |
| <Camera> | <Off-center> mm | <Height> mm | <Length> mm |
| <Camera> | <Off-center> mm | <Height> mm | <Length> mm |
| <Camera> | <Off-center> mm | <Height> mm | <Length> mm |
| <Camera> | <Off-center> mm | <Height> mm | <Length> mm |
Entrance Pupil Measurements
| Lens | Focal Length / # of pics for 360� / Degree between pics | Entrance Pupil Length (L2) |
|---|---|---|
| ||
| Enter the exact lens name, or if you are using a camera with a fixed lens the name of your camera | Facing the side of the lens, the distance from the base of the lens to the Entrance Pupil. A negative value means the entrance pupil is before the lens base. (not sure if this makes sense in a theoretical way) | |
| EF-S 10-22mm | 10mm | 66mm |
| Kit Lens 18-55mm | 18mm | 47mm |
| Kit Lens 18-55mm | 24mm | 23mm |
| Kit Lens 18-55mm | 35mm | 45mm |
| Kit Lens 18-55mm | 55mm | 55mm |
| Canon 17-40mm | 17mm | 71mm |
| Canon 17-40mm | 28mm | 69mm |
| Canon 17-40mm | 40mm | 72mm |
| Canon 50mm f1.8II | 50mm | 23mm |
| Sigma70-300 | 70mm | 83mm |
| Sigma70-300 | 85mm | 70mm |
| Sigma70-300 | 100mm | 45mm |
| Sigma70-300 | 135mm | -30mm |
| Sigma70-300 | 200mm | -30mm |
| Nikkor AF-S DX 18-70mm | 18mm / 10p / 36� | 51mm |
| Nikkor AF-S DX 18-70mm | 24mm / 12p / 30� | 44mm |
| Nikkor AF-S DX 18-70mm | 35mm / 18p / 20� | 33.5mm |
| Nikkor AF-S DX 18-70mm | 50mm / 24p / 15� | 24.5mm |
| Nikkor AF-S DX 18-70mm | 70mm / 36p / 10� | -6.5mm |
| Nikkor AF DX 10.5mm | 10.5mm / 8p / 45� | 45.5mm |
| Nikkor AF DX 10.5mm | 10.5mm / 6p / 60� | 46mm |
| Sigma 8mm F4.0 EX | 8mm / 6p / 60� | 47.5mm |
| Sigma 8mm F4.0 EX | 8mm / 6p / 60� | 51mm |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
| <Lens> | <Focal Length> | <Entrance Pupil Length> |
To calculate the Entrance pupil distance add the Tripod Mount Length (L1) from the camera and the Entrance Pupil Length (L2) from the lens.
So for example for a Canon 300d and a 10-22mm at 10mm, the total Entrance pupil distance from the tripod mount is 40mm + 66mm = 106mm