Monday, May 18, 2015

Thoughts on the SLR Magic 25mm T0.95 Hyperprime Lens

Received my SLR Magic 25mm T0.95 HyperPrime lens today. First impressions:
  • It's heavy! It's tiny!
  • The geared aperture/iris and focus rings have a nice resistance to them.
  • Very solid all-metal feel.
  • It has a small sliding lens hood that won't stay in place without tape.
  • Comes with a threaded metal lens cap; very nice, but overkill. I'll be storing it in favor of a quick plastic cap.
  • Focus throw is about 180 degrees.
  • At T0.98, focus is limited to a few millimeters of depth.
  • Compared it briefly to a 50mm on my full-frame 6D; the 6D is still wider, despite the math that the two should be close to equivalent.
After some time to play with the lens, here are some more thoughts:
  1. Like most (budget) lenses, it's soft wide open. It takes on a 'dreamy' soft look, though, with focus limited to a few millimeters. At T2, it's very nice and sharp, still with a beautiful, even, soft bokeh.
  2. The small sliding lens hood is in fact threaded (and not, insofar as I've found yet, removable). The lens itself takes a 49mm filter; the hood a (much more common) 55mm. If you install a 49-77mm step up ring to the lens itself, e.g. to add common filters, the hood will contact the step-up ring when trying to focus to infinity (and thus prevent reaching that focus); the solution is to use a 55-77mm step up ring attached to the hood rather than the lens itself. This seems like a small detail, but has ramifications in certain applications. For cine lenses, it's nice to have the front-most lens attachment not move as focus changes. Attaching step up rings and/or filters to the lens hood enables this.
  3. A point worth highlighting: This is a COMPLETELY MANUAL lens, with no electronic communication to the camera. This means no lens metadata (i.e. focal length, aperture setting, etc.) will be recorded with your photos or videos. This is generally not a problem for video work, but might matter to a stills photographer.
  4. The aperture ring is VERY close to the camera body, as in about 1cm away. There's only about 2cm separation between the aperture and focus rings. Should you want to operate both these rings via follow-focus type controls, be prepared to get creative! The focus ring is so close to the body that I can't fit a follow focus on the traditional left side when using my GH4 and the Wooden Camera cage.
  5. That said, the built-in metal gears mesh perfectly with every follow focus system I've yet tried. Both focus and aperture rings have very little backlash/hysteresis.
Some photos:
T0.95 Soft!

T2.0 Nice and sharp, with good bokeh

T0.95 useless for wide shots

Much better when stopped down.



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