Photo Rumblings and Whispers

Techniques, equipment, approaches, commentaries and more

Author

Pedro J. Aphalo

Published

2021-08-21

Modified

2026-06-13

Abstract

The pages in this website include two different sections, one dedicated to advertise services I am ready to provide commercially and another containing mostly notes about techniques, equipment and software that I use or have used for photography. I share in the hope that others may find them useful when taking photographs or as information on services I can provide. This website is mostly about digital photography techniques with emphasis on nature and macro photography. Tests and reviews attempt to explain the origin of the differences in performance between pieces of equipment or methods in general, rather than assessing specific pieces of equipment.

NotePedro J. Aphalo “Photo Spectrum Services”

After formally retiring from my Senior Lecturer position at the University of Helsinki in September 2024. I have registered as entrepreneur obtaining a Finnish Business ID to be able to provide consulting, training and other services against invoices. I have a long experience of working in collaboration with experts outside my main field of research and in teaching. My expertise includes 1) the statistical design of field and other experiments related to crops, plant ecology and plant physiology; 2) data analysis and data visualization in R; 3) development, publication and maintenance of R packages; 4) typesetting reports, scientific journals and books with \(\LaTeX\) and/or Quarto; 5) digital imaging in the ultraviolet, visible and near-infrared radiation, from macro range to landscape; thermography; time-lapse; focus-stacking; imaging of autofluorescence from plants and objects; 6) spectral and broad-band measurements of ultraviolet, visible and near-infrared radiation.

I can provide various services with my equipment. I own a fast computer workstation with ample RAM, professional digital cameras and lenses, a collection of optical filters, different light sources including LEDs and a Xenon flash modified to extend illumination range to UV-A and NIR. Tripods, copy stand, focusing rails and various other supports. Colour targets for calibration and Lumariver colour profile creation software. Capture 1 Pro, DxO PureRAW RAW, Helicon Focus.

If you would like additional information please do not hesitate to contact me at pedro@photo-spectrum.info.

In August 2023 I transferred this website from WordPress to Quarto. Only the URL to the home page remains the same. URLs to individual pages, posts, and illustrations have all changed from those in use before 2023-08-22. Most content from the old website that was still relevant is available in the new website, most of it edited and in some cases merged. I did not transfer the content that I considered no longer useful. The new website has built-in search, and I hope this alleviates the inconvenience caused by the broken URLs.

The old site has been regularly archived by the WaybackMachine since August 2020, and continues being archived.

Recently published

Recently updated

Note

This image of light reflected from filters with different anti-reflection coatings is used as a place-holder in the listings above when posts or pages have no default image assigned.