Laowa 25mm Ultra Macro (Canon mount)

Canon EF & RF, Nikon F & Z, Pentax K & Sony FE mounts are available. Source Credit: Laowa 25mm f/2.8 2.5-5X Ultra Macro, Venus Optics.

I bought the Canon mount plus the Canon EF lens to Fujifilm X mount camera adapter for use with my Canon EOS 5D Mark II DSLR and Fujifilm X-Series mirrorless digital cameras.

My Canon 5DM2 features a “full-frame” digital sensor; both my Fujifilm X-T1 and X-T3 cameras feature an APS-C digital sensor.

The following photo is an un-cropped, full size image from the full-frame digital sensor in my Canon 5DM2. Notice how much smaller the subject appears to be in this photo, in contrast with one of the un-cropped, full size images of the same specimen taken with my Fujifilm X-T1.

25mm (2.5x magnification) | ISO 100 | f/8 | 1/200 s | 0 ev

The Fujifilm X-T1 has a crop factor of 1.5x. In addition, the Canon-to-Fujifilm adapter (~1.25″ thick) increases magnification like the net effect of adding one or more extension tubes between the lens and focal plane of the digital image sensor.

The same photo was rotated slightly and cropped for better composition. Pretty good for a one-off shot at an aperture of f/8! Or was it f/5.6? I can’t remember and the EXIF info says f/0 because there aren’t any electronic contacts between the lens and camera body, so no help there.

25mm (2.5x magnification) | ISO 100 | f/8 | 1/200 s | 0 ev

Related Resources

• Laowa 25mm f/2.8 2.5-5X Ultra Macro [blog post by Walter Sanford]
• More Laowa 25mm Ultra Macro [blog post by Walter Sanford]
• Comparitive dimensions of sensor sizes
• Have you ever wondered…? [focal plane mark, Fujifilm X-T1 and Canon 5DM2]

Copyright © 2020 Walter Sanford. All rights reserved.

Tags: Anax junius, BoG Photo Studio, Common Green Darner dragonfly, exuvia, Family Aeshnidae (Darners), gear talk, Meet Your Neighbours, studio photography