News from the 3rd Dimension

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Willkommen in der neuen Dimension

Need a new Display? Smartwatches become suitable for daily use!

Smartwatches get more and more powerful and meanwhile prove usefulness not only for nerds. Beside the popular models from Samsung, Apple, Huawei et al you can find Chinese gadgets that cost only a fraction and provide even more power and features. Here we take a closer look to the LEMFO LEM5 - enriched with some useful tips.

If you look at the main specs, this little gem looks really impressive:

  • 1.39" OLED round display 400*400 in resolution
  • MT6580 quad core processor, 1.3 GH
  • RAM 1GB + 8GB flash memory (~6GB available)
  • OS Android 5.1
  • GPS / WiFi / Bluetooth 4.0
  • Cellular phone: 2G: GSM 850 900 1900 2100 MHz / 3G: WCDMA 850 1900 2100 MHz
  • 50+ styles of clock faces
  • Heart rate monitor, pedometer and sedentary reminder
  • 450 mAh battery

LEMFO LEM5 - available colors


YI M1 Mirrorless vs. Sony A6300 Comparison Review

Sony A6300 vs. YI M1

One of the few suprises on this year's Photokina was the new and first Chinese mirrorless camera from YI Technology, the M1. Some voices saw it on par even with Sony's A6300. This made me curious and inspired me to take a closer look.

There is a new firmware 1.0.20.-int from 28th November 2016 that adds several features and some fixes. Release Notes:
1. Adding live view interface for video mode, long - press the REC button for 2 seconds to enter. The original one click recording video function is still retained.
2. Adding ISO upper limit setting function of ISO AUTO option. Valid for P / A / S mode.
3. Adding GUI MF function for 42.5mm F1.8 lens.
4. Adding EIS menu for video mode. EIS off by default when recording 4K video.
5. Adding file storage status indication. When the file is written to the memory card, the original location for remaining number will display the corresponding Icon.
6. C-AF video performance improved. Continuous autofocus performance is further enhanced.
7. 4K Video performance improved.
8. Adding German menu.

Fixed some known bugs, and improved the overall stability of the system.

YI's first Micro Four Thirds (MFT) camera features the Sony IMX269 sensor, capable to deliver 12 bit raw photos with 20 MP and 4K video with 30 fps. You find this sensor also in the Lumix GX8 and the Olympus PEN-F. Beside some Chinese sellers, the YI M1 meanwhile is offered also in the U.S. with prices between $499 (body with 12-40mm f/3.5-5.6 zoom lens) and $699 for the double lens kit including also a 42.5mm f/1.8 macro capable portrait prime lens. You may see the camera for about 2/3 of these prices in some Chinese stores but this is not the international model. I ordered the international double lens kit directly from China, it gets delivered in a nice packaging:

YI M1 double lens kit



Filmed in Nazaré, Setubal, Arrábida, Cabo Espichel, Lagos, Fuseta and Praia da Marinha, Portugal using a Sony A6300 on DJI Matrice 100. Music composed and performed by Lars Rühmann. Original file available as download on Vimeo if you have an account there. Please switch player to full screen mode and choose next higher (compared to your physical display) available resolution by clicking on the "HD" symbol, e.g. "2K" for a full HD 1920x1080 display.

For more information on aerial applications, please visit www.KopterKraft.com.


ZEISS Batis 2.8/18 - Another Jewel in the Batis Crown

If you are looking for a lightweight full-frame lens with very wide field of view, fast autofocus and large aperture for landscape, astro and architectural photography, the third member of the Batis family may be the ideal lens for you. On top you get dust and spray protection.

After the felicitous Batis 25 and Loxia 21, I was very curious to see, what level of excellence ZEISS can deliver in the 18mm focal length range. As you may already know, Batis lenses are developed specifically for the short flange distance and filter stack of Sony's mirrorless full frame E-Mount cameras, the Alpha7-series. In contrast to the Loxia line, the Batis line comes with fast autofocus and an OLED display providing information about distance and depth of field when using the manual focus option. The Batis 18 incorporates a Distagon floating elements design with 11 elements (several aspherical and special glass). Despite that complexity it comes in a compact housing and weighs only 330g. Click here for further details.

ZEISS Batis 2.8/18 on Sony A7RII


Usually I start my reviews with a deeper look into sharpness / details. This time I will focus on bokeh first, as there are not many super wide angle lenses starting with an f/2.8 aperture. Despite other ultra wide lenses like the Voigtlander 15mm f/4.5 or the Zeiss FE 16-35 f/4, the Batis 18 still provides some options to play with depth of field arranging an object sharply in the close-up range with a nice background blur.

A first example you can see already as title image fo this article, here are further samples at f/2.8:


Sony World Photography / Zeiss Photography Awards Winners 2016

Right: Tamina-Florentine Zuch, Winner of Zeiss Photography Awards; Left: Michael Schiehlen, Senior Director Sales & Marketing, Camera Lens Division, ZEISS

London, 21 April 2016 - The winners of the Sony World Photography Awards and the ZEISS Photography awards have been announced in an awards ceremony.

The Sony World Photography Awards (SWPA) is the world’s biggest photography contest and in 2016 the new ZEISS Photography Awards runs alongside, both organized by the World Photography Organisation (WPO). The SWPA has five competitions with categories across all genres of photojournalism, fine art and commercial photography.

Awaiting the Sony World Photography Awards 2016 in London


Laowa 105mm f/2 STF - another Bokeh Dream!

If you remember my article from 2014 about "Bokeh Dreams", you may have noticed the unique bokeh of the Sony 135/2.8 STF. Now Venus Optics, an ambitious lens manufacturer from China, designed a new "smooth trans focus" potrait lens, the Laowa 105 mm f/2 STF.

STF stands for "Smooth Transition Focus" and was intruduced by Minolta in 1999. It means an optical design with dual diaphragm and an apodization element as shown in this schematic diagram:

Comparing conventional design with smooth trans focus design (source: Venus Optics)


4K UHD Aerial Test with Sony A6300

Testing the Sony A6300 on DJI Matrice 100...

Shot in Super35 4K mode with 25 fps, interpreted for playback as 30p (20% speed increase). Original file available as download on Vimeo if you have an account there. Please switch player to full screen mode and choose highest available resolution by clicking on the "HD" symbol.

Some wannabe" tech-gurus" say, the A6300 suffers from strong moiré as it has no 4K optimised low pass filter. I can not confirm this as long as you use the Super35mm 4K mode which downscales the 4K from approx. 6K.

I also read complaints about overheating issues and short battery life from people, which mean this prohibts "Pro" use. Well, let me tell you that not every "Pro" use needs recording times significantly longer than 20 Minutes per take or hours of battery life. The A6300 has priority for lightweight and compactness and if you need longer recording time, use an external power supply on the USB port. It will also keep the camera cooler as the internal battery will not add heat.

For more information on aerial applications, please visit www.KopterKraft.com.

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