I agree that the question possed on the choice of film might have come from a beginner, however it could have come from someone who had used other equipment for many years and just wants to get the opinion of other users of the G. Being a new user, I would like to know what other users have found from their own experience. This is a forum - let's use it for sharing experience.
In my many years in photography using many different cameras and lenses, I have found that for the best possible results with color negative, transparency, or B&W films, you should run a test of at least one roll of film using 3 to 4 different films in each catagory.
Let's take B&W first. My favorite is Ilford HP5. I also use FP4 and PanF, but my best work has always been with HP5 - at ISO 500. I have blown up the center 1/3 of a 35mm negative to 16 X 20 with excellant results and many awards in competition. The camers involved were Nikon F2 w/Nikon optics, LeicaFlex with 90 mm F2.8, and Leica M4s with 35, 50 and 90 Summicrons. I hope the CZ lenses work well with Ilford as I really like the films.
Color negatives - Well, I usually use the standard Kodak amateur films with good results, however I plan to ry some of the new professional films.
Transparencies - Some of my Nikon lenses had better results with Extachromes, some with Kodachrome. I also used Agfa in some cameras (I had a Beseler TopCon Super D that got its best pictures with Agfachrome). I have not tried any slide with the G yet, but will probably run tests with at least 5 films.
So, the best thing to do is test, test and test if you want to find the best film for your camera and lenses.
Of course, you will also find that there will be films that you will use for certain subjects. I always used Extachrome for winter scenes because by controlling exposure I could make the photo give the viewer a feeling of cold. Sunsets with my Nikon 80-200 were best with Kodachrome 64; with my Leica M lenses, I had some great sunsets using Kodacolor.
I have been away from serious photography for a number of years and would like some feedback on some of the newer films on the market.
Jim Slater