https://pho.tography.org/tags/speed-booster/ Recent content in Speed Booster on pho.tography.org Hugo -- gohugo.io en-us Wed, 16 Sep 2026 00:00:00 +0000 https://pho.tography.org/vintage-lenses-on-aps-c-and-micro-four-thirds-crop-factor-flange-distance-and-speed-booster-tables/ Wed, 16 Sep 2026 00:00:00 +0000 https://pho.tography.org/vintage-lenses-on-aps-c-and-micro-four-thirds-crop-factor-flange-distance-and-speed-booster-tables/ Put a Helios 44-2 on a Fuji body and it stops being a 58mm lens, at least as far as framing goes. It frames like an 87mm. On an Olympus Micro Four Thirds body it frames like a 116mm. Same glass, same aperture ring, very different lens in practice. Most of the confusion around adapted glass comes from mixing up three separate things: what the sensor crops, what the adapter has to do mechanically, and what a focal reducer changes.