Entrance Pupil Database

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Wouldn't it be great if everyone entered their values for their NPP / 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. Note that the NPP for fisheye lenses is not constant over the image circle's FoV, so you will sometimes find different NPP values depending on the angle where your images overlap.

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)
Transparent pixel.png Tripod mount off-center Tripod mount height Tripod mount length
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, or base for adaptor tube. For fixed lens camera's which do not allow use of adaptors this column is not applicable.
Canon EOS 300D / Digital Rebel (EOS Digital Rebel) 0mm 40mm 40mm
Nikon D70 0mm 52mm 36mm
Nikon C8800 19.1 mm 67.9 mm N/A
Canon EOS 350D / Digital Rebel XT (measured by NP) 0 mm 37.5 mm 38.5 mm
Canon EOS 300D / Digital Rebel (measured by NP) 0 mm 40 mm 38.5 mm
Nikon D100 with MB-D100 0 mm 93 mm 33,5 mm
Fujifilm FinePix S7000 0 mm 32.8 mm 69mm + 37mm(Adapt.Tube)=106mm
Canon EOS 20D 0 mm 40 mm 36.5mm
Canon PowerShot A630 15 mm 28 mm 0mm (fixed lens)

Entrance Pupil Measurements

Lens Focal Length / # of pics for 360° / Degree between pics Entrance Pupil Length (L2)
Transparent pixel.png Transparent pixel.png Entrance Pupil Length
Enter the exact lens name, or if you are using a camera with a fixed lens the name of your camera Transparent pixel.png 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 / 4p / 90° 51mm
Nikon C8800 at Wide inf. (is this at the widest setting ?) 8.9mm ?? 75mm center of tripod mtg screw to Ent Pupil
Peleng-N 8mm F3.5 8mm / 4p / 90° 44mm
Sigma 8mm F4.0 EX DG 8mm / 4p / 90° 49mm
Opteka 0.22X UHD II FishEye 0.22X - 8mm / 4p / 90° 35.75mm
Tamron 90mm F2.8 Di2 Macro 90mm 34mm
Sigma 10-20mm F4-5.6 EX DC 10mm 62mm
Sigma 10-20mm F4-5.6 EX DC 14mm 64mm
Sigma 10-20mm F4-5.6 EX DC 20mm 68mm
Raynox DCR-CF185PRO Conversion lens 80mm
Canon PowerShot A630 35mm (wide open) 31mm
<Manufacturer / 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
  • For these Focal Length values the actual focus is set to infinity ()

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