Author Archives: thepanoramist

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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Sheraton Desert Oasis May 2017

I have finally sorted and cataloged all the panoramic images I took on my recent trip to Utah and Arizona. There are approximately 170 panoramas, and I have just begun the rendering. On our last day in Arizona, I decided … 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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Sony Introduces Two New Wide-Angle Full-Frame E-Mount Lenses

SAN DIEGO, May 17, 2017 – Sony Electronics, a worldwide leader in digital imaging and the world’s largest image sensor manufacturer, has today announced two new additions to their growing lineup of full-frame E-mount lenses. The new lenses include the … Continue reading

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What is Carbon Fiber?

Why is carbon fiber used in photographic equipment, for example, tripods? What is Carbon Fiber? A carbon fiber is a long, thin strand of material about 0.0002-0.0004 in (0.005-0.010 mm) in diameter and composed mostly of carbon atoms. The carbon … Continue reading

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