March 2013 - Back in February I had another opportunity in Hong Kong to compare quite a unique collection of superfast 35mm prime lenses that - attached to a NEX-7 - provide you an equivalent angle of view to a classical 50mm lens on full frame. Three of them start at an amazing aperture of about f/0.95 that compares in terms of depth of field (DOF) to 50mm f/1.4 on a fullframe sensor.

One of the candidates, the SLR Magic HyperPrime CINE 35mm T0.95 was compared already in December 2012 to a Voigtländer Nokton 35mm f/1.2 ASPH (version I) and an AF-S Nikkor 50mm f/1.4 G on full frame (the  Nikon D800E) (here, in memory), thus triggering a discussion about onion rings ...

The shootout candidates (ordered by transmission / aperture):

• SLR Magic HyperPrime CINE 35mm T0.95
  The final production version used in this comparison will start shipping in about May 2013 for an introductory price of US$ 1249. It is a very solid (about 800g) construction with 12 lens elements, circular aperture blades and an extractable lens hood. The aperture ring operates clickless and is calibrated in T-stops (a transmission of T0.95 usually requires an aperture of about f/0.9 to f/0.92) and has the same cogging like the focus ring to support video applications (follow focus) as well. It is shipped with M-mount and an adapter to E-/X-/EF-M-Mount depending on your order. It covers APS-H sensor size but with its large rear element (diameter 36mm) it does not fit into the throat of current Leica-M cameras or Ricohs GXR module. For more details please see this article.
  
• Mitakon 35mm f/0.95
  This lens is a very solid construction as well with 10 lens elements and a 10 blades aperture. It has good haptics, weighs about 680g and comes with E-mount. Prices I have seen so far varied between 700 (eBay auction) and 1000 US$ (private auction). The lens is manufactured in China and until now I did not see a dealer that offers it with warranty.
  
• Canon EF 50mm f/1.4 lens + Metabones Speed Booster (converting to a 35mm f/1.0 lens)
  This combination of a 50mm f/1.4 full frame lens and a focal converter provides you a lens with 35mm focal length and an aperture of f/1.0 still covering the size of an APS-C sensor. To understand that functional principle please see Metabone's white paper. The adapter is designed to transmit /convert also the electrical signals to the lens in order to control aperture setting and autofocus (on selected lenses) by the camera. The Canon EF 50/1.4 lens is about 400 US$, the adapter costs about 600 US$ when ordered in Hong Kong.
  
• Leica Summilux-M 35mm f/1.4 ASPH
  This lens is designed with 9 elements, one with aspherical surface and 9 aperture blades. It is very compact and weighs only about 320g. Some people say it is still the "35mm/1.4 reference". Prices are about 5000 US$ (new and about 4500 US$ used).
• Samyang 35mm f/1.4 AS UMC
  This lens is designed for fullframe DSLRs and constructed with 12 lens elements (some aspherical) in 10 groups and an aperture with 8 blades. It weighs about 712g. It is availabe with different mounts and has an attractive price of about 500 US$.
• Leica Summicron-M 35mm f/2.0 ASPH
  This even more compact desgined lens is propably the smallest 35mm f/2.0 fullframe lens avaiilable today. It is designed with 7 elements (one aspherical surface), has an 8-bladed diaphragm and weighs 254g. Price is about 3200 US$.
  

In this article we will cover

- overall comparison
- center-sharpness of the f/0.95 and f/1.4 candidates at open aperture and F1.4 as well as edge sharpness (of the 0.95 candidates)
- bokeh (rendering of the out-of-focus areas and the shape of the circles of confusion of highlights) at F0.95, F1.4 and F2.0
- conclusion
- further sample shots

Acting as a good subject for real world photos, we met Bertille Tabourot, who is a stylist and fashion designer from Paris, living currently in Hong Kong. She used this opportunity to present some of her fancy creations acting as a freelance model.

28 Feb. 2013 - Last week was one of the highlights of my trip through Southeast Asia as I had the chance and pleasure to compare the upcoming SLR Magic HyperPrime CINE 25mm T0.95 to three other highly adorable, wide open 25mm F0.95 lenses. Let us see how they perform on the latest mFT camera, the Lumix GH3!

This little shootout was more a kind of spontaneous incident as we had some daylight remaining at the end of an "Adorable 35s" session planned for that day in Hong Kong with Andrew Chan and some friends. Andrew is the driving force of SLR Magic and very passionate about great lenses - not only those he builds by himself. But let me state that I am not affiliated with SLR Magic and payed for all lenses I got from them. We got some kind support from Bertille Tabourot, who is a stylist and fashion designer from France, living currently in Hong Kong. For this comparison shooting she took the chance to present one of her fancy creations acting as a freelance model.

But now let's talk about the principal performers of this shootout ordered by "age":

• P. Angenieux Paris 25mm Type M1 f/0.95
  This very compact and beautyful lens was developed in 1953 and at that time the fastest 25mm design. One of the early copies was used by NASA to take the first photographs of the moon from a lunar probe. It is said to have a very cinematic look, a nice bokeh when used wide open and sharp look when stopped down. It is quite hard to find and prices may be around 1500 US$ when in good condition.
  
• Schneider-Kreuznach Xenon 25mm F/0.95
  Schneider Xenon designs have their origin already in 1925 when Tronnier derived it as an asymmetrical derivative of the classical double-Gauss design. The Xenon 25mm f/0.95 became available in the 1960s. The particular copy used in this test was manufactured in late 1978 or 1979 and was equipped with a built-in center spot ND filter that could be ordered for special applications. Current versions do not have that filter and look a bit different, see here. Used prices will vary between 800 and 1500 US$ depending on condition and type.
  
• Voigtländer Nokton 25mm f/0.95
  This lens was developed by Cosina Voigtlander and became available for the MicroFourThirds mount in 2010. It is known to be already pretty sharp wide open with increased sharpness when stopped down to F1.4 to F2.0. Price is about 1200 US$.
  
• SLR Magic HyperPrime CINE 25mm T0.95
  Production version will become likely available in April 2013 and will start at a price of 799 US$. It has cinema lens gears and aperture keeps round even when stopped down. In this comparison we used a pre-production (step 2) sample. For a rating of sharpness and bokeh please see my conclusion at the end of this article.
  

Overall Picture Comparison (F0.95 / T0.95)

The following pictures were all shot from the same postion between 6:19 and 6:27 p.m. on a cloudy day already after sunset in order to get a nice light mood with some point shaped highlights in the background. To avoid motion blur, exposure times were kept at 1/125s which results in ISO settings already between 400 and 1000 (due to differences in transmission/vignetting and sligthly dimming light) and of course we used a tripod.

Let us start with the Angenieux 25/0.95 at open aperture: