Photoclub Alpha

Back in that first golden summer – well, it was late autumn going on winter, just the time to acquire a new DSLR when the days were short and the light awful – the Konica Minolta Dynax 7D arrived with a plastic screen protector in the box. A week later the first one had, after several recaptures, successfully jumped ship leaving the decks bare.

Tamron’s 18-250mm lens – later adopted by Sony – was so good that it really takes some effort to beat it. Sigma has put that effort in, but the cost is a very much larger and heavier lens. If all you got was some better performance, it might not be all that exciting. But you get potentially superior anti-shake through its built-in OS, and faster focusing with HSM, the Sigma equivalent of SSM.

SIGMA redesigned their 70-200mm not long ago to change the EX version to DG, introducing new coatings which greatly improved microcontrast and eliminated digital camera sensor reflections. In 2008, this was further upgraded to the Macro II model with HSM sonic motor focusing, a new optical design capable of focusing down to 1 metre distance. In 2009 this became available, along with matched HSM-compatible 2X and 1.4X converters, for the Sony Alpha mount.

Tamron Co., Ltd (Mr. Morio Ono, President), a comprehensive manufacturer of optical products with its head office in Saitama City, has announced the development of the SP AF60mm F/2.0 Di II LD (IF) MACRO 1:1 (Model G005), a life-size macro lens designed exclusively for digital SLR cameras with APS-C size image sensors* that offers a fast maximum aperture of F/2.0. (Text here is directly from their press announcement).

The custom white balance function on the Konica Minolta Dynax 5D could not be quicker to use; turn the left hand top dial to the custom symbol, press the button in the centre of the dial, press the shutter after aiming the camera at your white or grey target. Custom WB is now set until changed with a new reading, or returned to fixed or Auto WB.

Here, for some light relief, is an Alpha 700 + 24-105mm Minolta D documentary on the press dinner thrown for journalists from all the countries of the European region when they gathered in Edinburgh for the Alpha 900 launch!

If you use Sigma lenses on your Alpha, you can join the Sigma User Club UK and enter their prize competitions (anyone can join, worldwide, but you must be in the UK to enter the competitions as the prizes are given by the UK distribution company).

The parallel development of Carl Zeiss lenses for Sony (AF lenses in the Alpha mount) and independent manual focus lenses for other makes continues. The latest CZ design is a revision of the classic 18mm Distagon last seen in the Contax system, optimised for colour balance and reflection supression with digital SLRs.

Following announcements that Sony has developed a backlight technique to enable extremely low noise exposures, we receive this press release which may or may not be related – a Sony CCD astrophotography camera capable of one-hour exposures and programmed sequences. Resolution seems a bit basic though.

Our cover photo for the Spring 2008 issue of Photoworld was taken with a Tamron 70-300mm zoom costing less than £120 from most larger retailers or internet shops. The reputation of the lens meant we had to take a look at it, because the current choice in the Sony range is limited to one ‘kit’ 75-300mm costing £179, and the new 70-300mm G SSM lens costing £600.