David Davison rediscovers Captain Frederick Bligh, a 19th-century photographer, whose prints capturing the majesty and nuance of the alpine world have recently been returned to Ireland

The mention of 19th-century photographs generally calls to mind faded brown images of Great, Great Grandmother, or more likely those of unidentified ancestors. This hasty and unfair judgement condemns a remarkable period of visual experimentation and artistic development to totally unmerited obscurity. Photo-historians and others, who have taken the trouble to enquire are conscious that many of the finest photographs ever made emanate from that era