I finally realized that I need filters for my black and white photography. I suppose I have three choices. A Red #25A (+3 stops), a Yellow #K2 (+1 stop), or an Orange G (+1.3 stops). So my question is, are the above hand-holdable? If the red filter isn't hand-holdable (which I doubt it is), is its effect worth it so much so that it should be bought in addition to one of the two above? Is the Orange filter so much better than the Yellow that it is worth the extra third of a stop? Thanks. Edit: I use a lens with an aperature of f/3.5-5.6 and film ranging from 100ISO to 25ISO.