Category Archives: Master Class

Entrance Pupil Measurement of the Voigtlander 10 mm

The Voigtlander 10 mm lens does not come with any manufacturer data regarding the position of the entrance pupil. However, being an extreme wide-angle lens the entrance pupil must be very close to the front of the lens. Following the … Continue reading

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Measuring the Entrance Pupil Of the Zeiss Loxia Lens Series

This article is to support the entrance pupil measuring technique outlined in Measuring the Entrance Pupil. Zeiss provides entrance pupil data for the Loxia 21, 35, 50, and 85 mm lenses- see the Zeiss EP data in Table 1. Zeiss gives … Continue reading

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Entrance Pupil Calculator

Before continuing and demonstrating the method outlined in my article Measuring the Entrance Pupil, I first need to introduce the calculator I use to determine the entrance pupil position.

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Measuring The Entrance Pupil

Introduction In The Entrance Pupil And Its Importance,  it was demonstrated that a requirement for high-quality image stitching was knowing the position of the entrance pupil. How do you find the entrance pupil? An educated guess will sometimes suffice, as the … Continue reading

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Panorama Number of Shots Calculator

This calculator is used to determine the number of shots in the horizontal and vertical for a panorama. The user inputs the sensor size, lens focal length, % of frame overlap, horizontal rotation, and the vertical rotation.

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The Entrance Pupil And Its Importance

The Entrance Pupil In a lens, the entrance pupil is the apparent position of the lens’ physical aperture as viewed from the front of the lens. When viewed from the rear of the lens it is the exit pupil.

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Panoramism

The panoramic image is more widespread today than in the past. Therefore, language needs to expand to better explain various aspects of panoramism.

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