In this post about pushing Kentmere 400 to 1600, it talks about gentle agitation:
- agitate very gently (like with the little swizzle stick thing from the Patterson tank) for first 30 or 45 seconds, snap on the lid, and tap gently to release air bubbles
- Develop for 20 minutes, with 30 seconds of uber-gentle agitation at 6:30 and 13
Typically my development process is more vigorous - I agitate every 30 seconds or so. So far it works fine, though I haven't pushed Kentmere 400 before.
What is the point of agitating gently? How is it any different, and if there is a difference what happens?