Posted Mamiya entrance pupil location chart on my site.

[drew_persson]

<p>I couldn't find much information about the entrance pupil locations for Mamiya and other medium format lenses, so I measured mine and started a chart on my web site:<br /><a href="http://www.phototurbo.com/medium_format_lens_entrance_pupil.php/">Medium Format Lens Entrance Pupil Data</a><br />Hopefully it'll help someone out, if anyone has more medium format entrance pupil data just let me know and I'll add it to the chart.<br />Drew</p>

[drew_persson]

<p>Ooops, I posted a bad link and no way to edit, use this one instead: <a rel="nofollow" href="http://www.phototurbo.com/mediumformatentrancepupil.php" target="_blank">Medium Format Lens Entrance Pupil Data</a>.</p>

[q.g._de_bakker]

<p>Drew,</p>

<p>Usefull data!<br>

Can you also indicate which direction to go from the fromt lens to find the entrance pupil?<br>

Though i think all numbers given may be in front of the lens (?), in a retrofocus lens, it will be somewhere behind the front lens, but a telephoto may have its entrance pupil in front of the front lens.</p>