In all the excitement about smaller batteries and carbon-fibre effect hand grips, you may have missed the key message of the recent batch of camera announcements – that DSLR technology has reached a significant stage of maturity. The recently launched Olympus E-450 was without question the most subtle modification of an existing model we’ve ever seen and the new Sonys, with their revised styling and reworked user interfaces unquestionably have an awful lot in common with the preceding models.