Quote Originally Posted by jeroldharter
I have been split contrast printing for the last few months. Although I am new to large fromat B&W I have been interested in darkroom work and photography for over 20 years. I just spent my first day using the RH Designs StopClock Professional timer and I am a convert. There is a bit of a learning curve (I am still on it) but once you get going it keeps getting better. F-stop printing is so much more reasonable and consistent with the negative exposure side of the equation. Also, using it forces you to understand the process and materials better. I already am thinking in f-stops instead of seconds and making better prints. Split contrast burning also makes more sense to me. I highly recommend it to anyone with the money for it. (Lets hope for a recession in Great Britain.) I bought mine through their website and received it very promptly.

Not trying to be a salesman but it really is a great piece of gear. I saw on APUG that DigitalTruth is selling a similar but cheaper/fewer-featured f-stop timer also.
I cannot agree with you more, Doc! I also use this timer and it has changed my printing life for the better.

I took a printing workshop with Les McLean last spring, and I really find that split filter (#0 & #5) printing gives tons of control. There was something Les said that no one has mentioned so far... 'a little bit of #0 goes a long way' or something to that effect. That's why I don't really think you can say "25% of the total time or 50% of the total time is one filter or another. I really think it's totally dependent on the negative. I really think you need to make the test strips for each negative to see.... if you try to put it 'in a box', it just limits your scope of the situation... IMVHO.