Firstly, thanks to all you guys for your advice on my darkroom quest -
( http://www.apug.org/forums/forum43/5...hats-best.html )
Taken my first steps and got a Durst M670 and a RR Beard easel. The Durst came with the following (copied from seller ad)
Mains 12 volt Transformer Power Supply
Dallmeyer 100mm (4inch) f4.5 Anastigmat Enlarging Lens
The Lens is Multi-element Tessar design: - Flat field corrected, Razor sharp high resolution.
Chemical resistant Base Board
Durst Unineg - Universal neg/slide carrier with ability to interchange format inserts
Sixma 6x7 metal inserts
Vegabox 667 Diffuser box
The carrier does 6x7 and 35mm so is exactly what I need but.... what lenses do I need to print A5 to A3 size in both formats?