I own a few ND1000 filters but I don’t use them that much. I have also several step-up rings. So a 72mm filter and a handful step-up rings go a long way.
An ND1000 filter equals 10 stops.
A few days ago I tried a 49mm ND1000, a step-up ring and a 72mm ND1000 setup on my Ricoh GR II. That worked fine and on a bright and sunny day, I got my shutter speed as low as 30 seconds. The Ricoh GR II has also a build in 2 stop ND filter.
Yesterday I wanted to do some long exposures. Normally I would drive to the Netherlands. Getting there is no problem but coming back is a big issue due to roadworks and no real good detour possible.
I decided to go to a nearby city where there is some light industry near a canal. I also felt like doing some film photography so I took my Olympus OM-2n and a few lenses with me.
After finding an interesting spot I mounted my Ricoh GR II on a sturdy tripod, framed a shot, put everything in manual mode and screwed on the 49mm ND1000 and then the 49/72mm step-up ring.
Sure enough, I had the wrong filter with me. The second ND1000 filter was a 62mm.
Eventually, I managed to hold the ND-filter against the step-up ring with a rubber lens hood. Reversing it somehow managed to keep the second filter flat against the step-up ring.
I experimented with exposures and 60″ at about f8 did the job. I was happy I had found a way to keep the 2nd ND filter in place.
Got the Olympus OM-2n out of my bag, mounted a 28mm f2,8 on it, framed and took a shot. Up went the mirror and that was that.
Pushed the lever to reset/check and the mirror came down again. Everything seemed okay but when I pressed the shutter button a second time the mirror went up and again that was that.
It didn’t take long for me to find out the batteries of the camera were exhausted. I had a fresh pair but unfortunately, they were lying on my desk at home.
So no film photography and quite a lot fiddling with filters when using the Ricoh GR II.
What an afternoon! I really had come unprepared. A good lesson though.
Soon the sun faded and dark clouds flew in. Light dropped dramatically to a level where one ND1000 filter was enough. I did a few more shots but then it started to rain so I called it a day.