When shooting outside in bright light and the camera has 1/500 speed as fastest shutter speed, what are options when you want to shoot with the lens wide open?
Look at Pan F or FP4. Depending upon how bright it is you may still need a ND filter.
Also, I want to add that depending on your shutter 1/500 shutter speed may not be the most reliable or accurate shutter speed. Maybe shoot for 1/250 or 1/125 even.
Either but, as I almost never shoot a film faster than the 100 ISO range, it is almost never an issue for me. With my camera, I can swap backs and usually carry several films on any shoot. I also have a range of ND filters form 2 through 6 but actually very seldom carry them unless I am going out with a larger kit.
My RB67 has a shutter speed of 400, My Bronica ETRS has a 500 max speed, my M645 is 500 but my M645 1000S is 1000. All of my 35mm bodies are at least 1000 so I am mainly concerned with my RB and the ETRS.
I have never used any of the ASA25 or 50 speed films. I like the look of Tri-X, Hp5 and Px125.
With that in mind what are your favorite "slow" films?
You can also use a film with lots of latitude and simply overexpose. A negative film might give very acceptable results when overexposed several stops. I've been known to shoot tri-x in my 35mm cameras with the lens wide open at 1/1000s in sunlight That's about 5 stops overexposed, but if I want a blurred background that's what I have to do and the pictures usually turn out rather printable.
If you cannot do it using the holy trifecta of shutter speed, f stop, and film speed, then you have to control the intensity of the light reaching the lens by using other methods, of which neutral density is probably the most effective. A basic photography textbook will tell you all about it, and more.
When shooting outside in bright light and the camera has 1/500 speed as fastest shutter speed, what are options when you want to shoot with the lens wide open?
I just remove the film back with the ISO 400 film [black & white or color] and replace it with film back that has the ISO 100 or 160 film [black & white or color as appropriate]. Why is this a problem? Hasselblad solved this problem in 1948!