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Originally Posted by gainer  I should add, and in fact am adding, that HP5+ will not achieve as high a maximum CI as TX400, especially with Rodinal. |
This does not surprise me. If you look at Agfa's own published figures for Rodinal, you'll see that development times for its own films start to increase dramatically once G-bar exceeds 0.5.
And if you did a survey of alt-process folks (who typically develop to G-bars of 0.7 and higher), you'd find that many are shooting TXP, TMY, etc. which have upswept characteristic curves and are capable of reaching greater densities before shouldering off. HP5+, on the other hand, doesn't seem all that popular among such users.