Vasyl Tsvirkunov
IMG_2701
The filter setup, up close. There are three filters here -- ND 4X (2 stops) by Promaster, B+W 110 ND 3.0 (10 stops!), and MaxMax CC1. Just the 10 stop filter was not enough -- not as much for shots but the viewfinder was just too bright; could be bad for the sensor as well. Unfortunately, 10 stop is the strongest I have and I don't think they are making a stronger one anymore. So I had to add the second ND even at the risk of extra internal reflections. In the end, it did work reasonably well. There are some mild internal reflections on some shots but those are within tolerances, I could easily remove them by adjusting global contrast in PP. The CC1 filter blocks both IR and UV passing only the visible light. It was serving multiple purposes here. ND filters are passing most of the IR freely. Even with the strong hot mirror of 7D it would cause severe image degradation. The second reason is safety -- the IR passed through those ND filters is still dangerous for the eyes and it's invisible making it much much worse. By placing CC1 I've made the setup reasonably safe to use for manual focusing. Most of the focusing was done in live view anyway, it appeared to be more convenient.
There are two adapter rings in this setup. Both NDs are 58mm but the CC1 came from my IR setup which is 52mm. Nothing special about those rings.
One side note about the CC1. The filter causes strong cyan cast, much like extra strong cooling filter. This is a well known behavior of this filter but it is easily correctable. I've adjusted color temperature in Capture One to make the sun yellow again.
IMG_2701
The filter setup, up close. There are three filters here -- ND 4X (2 stops) by Promaster, B+W 110 ND 3.0 (10 stops!), and MaxMax CC1. Just the 10 stop filter was not enough -- not as much for shots but the viewfinder was just too bright; could be bad for the sensor as well. Unfortunately, 10 stop is the strongest I have and I don't think they are making a stronger one anymore. So I had to add the second ND even at the risk of extra internal reflections. In the end, it did work reasonably well. There are some mild internal reflections on some shots but those are within tolerances, I could easily remove them by adjusting global contrast in PP. The CC1 filter blocks both IR and UV passing only the visible light. It was serving multiple purposes here. ND filters are passing most of the IR freely. Even with the strong hot mirror of 7D it would cause severe image degradation. The second reason is safety -- the IR passed through those ND filters is still dangerous for the eyes and it's invisible making it much much worse. By placing CC1 I've made the setup reasonably safe to use for manual focusing. Most of the focusing was done in live view anyway, it appeared to be more convenient.
There are two adapter rings in this setup. Both NDs are 58mm but the CC1 came from my IR setup which is 52mm. Nothing special about those rings.
One side note about the CC1. The filter causes strong cyan cast, much like extra strong cooling filter. This is a well known behavior of this filter but it is easily correctable. I've adjusted color temperature in Capture One to make the sun yellow again.