Maurice Gavin
February 14th 05, 10:36 AM
Try
http://www.dpreview.com/news/0502/05021405canoneos20da.asp
for details of Canon's new astro/ IR camera eg 20Da where the IR block
filter is removed for improved red/ H-alpha performance. Presumably
this IR block filter can be added before the lens to restore its use
to normal photography.
http://www.dpreview.com/news/0502/05021405canoneos20da.asp
for details of Canon's new astro/ IR camera eg 20Da where the IR block
filter is removed for improved red/ H-alpha performance. Presumably
this IR block filter can be added before the lens to restore its use
to normal photography.