Hi, I have recently start using Durst M805 enlarger which is diffused light type. My previous one was condenser based enlarger. I found I need more contrast than before. This ends with I have to work with 4.5 or 5 grade most of the times. I plan to test a high contast developer for printing for this reason. Can you recommend any formula? I used to prepare D72. Regards Ibrahim Pamuk Genel Müdür Yardımcısı / Deputy General Manager Vestel Savunma Sanayi A.Ş. / Vestel Defence Industries Birlik Mah. 14. Sokak 4 Çankaya Ankara 06450 Türkiye / Turkey Tel: +90 312 496 21 00 Fax:+90 312 495 43 53