Sigma unveils 18-50mm f2.8-4.5 DC OS HSM lens

PMA 2009: Sigma has unveiled a new large aperture image-stabilized standard zoom, in the shape of the 18-50mm F2.8-4.5 DC OS HSM. This lens features a new Optical Stabilization unit which Sigma claims will work on Sony and Pentax bodies with in-body stabilization systems. It also boasts a larger maximum aperture than the kit zooms typically supplied with most DSLRs, and incorporates Sigma's Hypersonic motor for fast silent autofocus. Designed for DSLRs with APS-C/DX sized image sensors, it will be available in Sigma, Canon, Nikon, Sony and Pentax mounts.

Sigma releases 50-200mm f4-5.6 DC OS HSM lens

PMA 2009: Sigma has released an image-stabilized version of its budget telezoom lens, the 50-200mm F4-5.6 DC OS HSM. This  features the same new optical stabilization unit as seen on the 18-50mm F2.8-4.5 EX DC HSM also announced today, which is compatible with Pentax and Sony bodies with in-body anti-shake systems. The new lens also includes a number of user-friendly features rarely seen at this level, including a  hypersonic motor for fast, silent autofocus, and an internal-focusing design with a non-rotating front  element. It will be available in mounts for Sigma, Canon, Nikon, Sony and Pentax DSLRs, and is designed for cameras with APS-C/DX sized sensors only.

Equal among firsts for high resolution

11th February 2009, 01:26 am Here is an article which is mainly a test review of the Sigma 50mm f/1.4 EX DG HSM for Sony Alpha, and also Nikon, fit (both were tested). It also deals with the Alpha 900 and D3X, the two 24 megapixel full frame cameras used to test the lenses and two comparison 50mm f1.4s.Alamy must be able to predict the future. One of the recent changes they made was to allow searches for images over 70MB size. Neatly, both the Sony Alpha 900 and Nikon D3X just fall at the last

Just posted! Sony 50mm F1.4 lens review

Just posted! Our latest lens review featuring the Sony 50mm F1.4. Rounding off lens reviews for the year (and completing for the moment our mini-series of 50mm F1.4 lenses), we find out how this fast prime matches up to the exacting demands of Sony's 24 Mp A900 full-frame DSLR, as well as how it performs on the more popular APS-C sensor format.

Canon 5D Mark II and Nikon D700 High ISO – Quick Comparison

I put together a few quick frames from ISO 1600 to ISO 25600 for the Nikon D700 and Canon 5D Mark II tonight.  Nothing scientific, just a few shots snapped off at my desk. Settings: tripod, aperture priority @ f/8, evaluative metering, auto white balance, ISO 1600-25600 in full stops - lenses used were 50mm f/1.8 on the Nikon & 50mm f/1.4 on the Canon - RAW capture - exported to JPEG via Lightroom with no edits other than the 100% crops As you’ll see, the 5D Mark II tended to underexpos

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