There is no developer that will increase shadow detail significantly. In the most technical sense, you can't push film- it's a myth! Sure, we all do it (well, most of us) but the result is underexposure of the shadows. With the right subject, it can look just fine- you let the shadows go dark and concentrate on faces and lighter objects. Tri- X and Acufine is probably as good a combo as anything. T-Max developer is also designed for pushing, though I haven't used it for that.(posted 8088 days ago)