O.K. Here's the deal. My father recently volunteered my assistance in capturing the moment of my cousin's upcoming rather informal outdoor wedding. Two problems: I'm not a photographer and I don't have expensive equipment. Our immediate family does have two rather mundane point-and-shoot cameras which we will utilize on that special day. However, I also just found my father's ancient 35mm film camera (a Pentax Spotmatic F) which I would like to put to use as well. Today, I just cleaned 20 years of crud off of its Takumar 1:1.8 55mm prime lens, and I am itching to use it for the occasion. Why? Because it is the only interchangeable lens camera we own, and I am very curious as to what the resulting images will be like.
So, you can probably guess my problems. I want to buy some Kodak Ultramax 35mm film (ISO 400) at my local drugstore and give it a whirl. But first I would like to put the camera through its paces a bit by shooting some hummingbirds on our back porch feeder. You see, two very different shooting situations. A comparable Fujifilm product to the Kodak film said its ISO 400 product was suitable to all shooting situations, both indoor and outdoor, full and low light, and fast versus slow action. So, I'm assuming the Kodak ISO 400 product would be similiarly well-suited, and I have no choice since I cannot find the Fujifilm in stock at my local drugstores. Anyway, I need your help since experimenting through chimping is not an option with a film camera.
Specifically, I need to know what is the proper f-stop for fast action (hummingbirds) in mid-morning light with a shutter speed of either 1/500 or 1/1000 of a second (the fastest setting on the old Pentax) with ISO 400 35mm film. I would like to use as low an f-number as possible to blur out the side of my neighbor's house which will be in the background, but at the same time I don't want to overexpose the film. Also, I'll need to know what f-stop to use in afternoon light (around 3-4 P.M.) at around 1/30 to 1/60 of second shutter speed for those all-important wedding shots again with the same ISO 400 35mm film. To complicate matters, I do not have a light meter nor working flash for the Pentax.
Now, I know there must be some 35mm film experts lurking on this site. At least, that is what I am hoping. I know the world's gone digital, but I'm trying to learn photography (at least a little), and I like this experiment. Hopefully, it will result in some decent images as well. Thanks in advance for your input. I'm eager to learn the answers to my little conundrum.
1st off, my sincere condolences for being "volunteered" for a wedding.
2nd, Here's a few things to consider:
Looking at the charts for the Tokina lens, you've got between f/1.8 and f/16 (or 22, but I'll stick with the conservative f/16). With 400 ISO film and the old rule of making sure that you don't handhold shutter speeds slower than the reciprocal of focal length in mms (in your case, no slower than 1/60 with a 55mm lens), the combo of everything gives you a shooting envelope between a brightly-lit home interior at night (aperture opened to f/1.8 or f/2 and 1/60 shutter), and shooting on a bright, sunny day with sand or snow (f/16, 1/1000 shutter). Anything outside of that and you're gonna have a bad time.
So, ISO 400 and you're good.
As someone aforementioned, google the "sunny f/16 rule" and get it memorized as much as you can. if you can get your light meter working then great, but if you can't being able to work out settings as close as you can will go a long way.
Next, PRACTICE. You're going to need it. Practice within the approximate shooting conditions (i.e. ambient lighting) of the wedding--is it going to be in the open or in the shade? What's the weather supposed to be: Sunny or overcast? Try to approximate that.
As for the hummingbirds, my best guess offhand is an f-stop between f/8 and f/16--depending on the light and depending on whether or not you're shooting 1/500 or 1/1000 shutter speeds. If the hummingbirds are in shade or it's overcast you can open it up more but in that case you being stuck at ISO400 for the duration means you gotta stop down since at 1/1000 you won't be able to shoot a faster shutter.
But again, PRACTICE. Get some film and shoot/develop/refine because even though everything I've said is worked out through the math (and I've shot film only about a year ago on something as spartan as a Pentax K1000), there's no substitute for shooting, seeing what worked and what didn't, and then refining your process/settings.
Good luck and I hope this helped a bit.