I largely agree with Bowzart and Jim, but I would not call pushing a crapshoot. You just have to know what pushing is, why it works, what it does to your pix, and you will know when to do it, and how to do it. If you care about shadows, don't do it, or just do it a little bit. Personally, I don't care all that much about detail in the shadows when I use this film. I am usually after a graphic, gritty look. You can get much more graphic results with a slower film such as HP5 (deeper blacks, punchier highlights), but I find the more washed out shadows and the neat grain pattern of Delta to be aesthetically perfect for lots of things that I shoot. In most cases, even though it is one stop faster than HP5, this film is sharper in low light than pushed HP5/Tri-X, due to the non-random pattern of the grain. The grain is there, but does not necessarily make pix unsharp. I almost always shoot Delta 1000 with a two stop push in development. If I have the luxury, I set the EI to 1000 on my spotmeter or in-camera meter and place a tone that I would like to push (as opposed to placing a shadow). Usually, however, I just use the exposure that I can "get away with" hand held and develop to either increase contrast with a push, or to lower contrast with a stand development. The choice of which one to do depends on the lighting and compositions that were shot. In flat light, I push, and in contrasty light, I stand. The film is inherently a low contrast film, so it does not blow highlights OR loose shadows as badly as other films. Give it a go. Shoot a test roll if you can. I am of the opinion that something is always better than nothing. Don't fear underexposure. You can do a lot in printing, and also a notable amount with intensification. A lot of times I will combine pushing with stand development in order to increase the overall fog level on the film as well as bumping the highlights up. You can do this with one bath or two. I like to do it with two: First the highly diluted stand dilution (1:63 - 1:127), then the "normal" strength push dilution (1:31).