Emilio Del Tessandoro
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Adobe Lightroom showing a DNG file with all editing masks preserved

DNG as a backup format, 9 years later

February 8, 2026

Nine years after my first DNG experiments, I converted my entire 1.5TB photo collection to lossy DNG. It compressed down to 230GB with no visible quality loss.

photographytechnicalrawpost-processing
Nikon Z8 with the Nikkor Z 14-30mm f/4 at 14mm, after geometric correction

Ultra-wide lenses for landscape: Nikon, Sony, Canon compared

December 13, 2025

I tested Nikon, Canon, and considered Sony ultra-wide lenses. Filter compatibility made the choice obvious: Nikon Z 14-30mm f/4.

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Photographic dynamic range comparison chart between Canon EOS R5, Nikon D850, and Sony A7R V

Why Canon's autofocus is insane (and why it might not matter)

December 6, 2025

Canon's Dual Pixel AF is a genuinely different technology from what Sony and Nikon use. Here's how it works, why it's better in some situations, and why I stopped caring.

geartechnicalcanonnikonsonyautofocus
Photographic dynamic range comparison chart between Canon EOS R5, Nikon D850, and Sony A7R V

One year trying multiple mirrorless brands: Nikon, Canon, Sony

November 29, 2025

After a year of buying, selling, renting, and borrowing Canon, Nikon, and Sony cameras, I ended up with two used Nikon bodies for 1300 euros total.

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The cliffs of Étretat at sunrise on a misty November morning

A Week in Normandy

November 15, 2017

Photographing the cliffs of Étretat and Mont Saint-Michel in cold, rainy November - two very different experiences on the same trip.

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Adobe Photoshop DNG import dialog showing compression options

DNG experiments

May 12, 2017

Comparing DNG and RAW formats for archiving photography - compression ratios, quality trade-offs, and practical considerations.

photographytechnicalrawpost-processing