It is extremely popular with our customers because it is extremely practical in its entirety. Especially for photographers who like to have a larger selection of filters with them on their trips. And that's exactly what ours offers you variable F:X Pro ND8-512.
Its peculiarity is that the filter takes advantage of the strengths of ND 8 to ND 512 has all these strengths in just this one combined with a single filter are.
Marking on the filter for the most precise darkening
It is helpful that on the Each ND filter is labeled is what strength you are currently using, so that the darkening can always be adjusted exactly as you want. He will also variable ND filter together with one Shutter speed table delivered, with the help of which you can Exposure times the individual filter strengths can be calculated.
| ISO | Exposure time | focal length | cover |
|---|---|---|---|
| 50 | 13 sec. | 166mm | 22 |
The professional photographer Harald Kröher tested the variable ND filter for us and came to these great results:
Harald Kröher says: I had that variable ND filter in use in the beautiful Palatinate, in the Black Forest, in Ticino and also in Brittany on the Atlantic. You actually have to imagine him like one double polarizing filter. By turning the pole disks one continuous darkening can be brought about.“
A huge advantage over conventional gray filters, explains Kröher, are the following points:
- All you need is a gray filter and you save money cumbersome changing
- Compared to the complete series saved money
- You can with the exactly desired Time-aperture combination work.
| ISO | Exposure time | focal length | cover |
|---|---|---|---|
| 1600 | 1/10 sec. | 48mm | 16 |
„The often listed disadvantages of a variable ND filter are not confirmed with the Rollei product. There was no discoloration, even at one f-stop and an exposure factor of 9, explains Kröher further..
„The variable ND filter let it go a lot easy to clean“said Kröher after the test. When there was light rain, no water got between the polarizing filters and you could easily set the filter to the desired time using the attached table.
In Brittany, the filter was briefly showered with salt water when there were strong waves. And here too, after cleaning, no effect at all was visible.
| ISO | Exposure time | focal length | cover |
|---|---|---|---|
| 125 | 1/15 sec. | 70mm | 6.3 |
His conclusion
„I can do this one Only recommend filters. Because you get the desired result more quickly, it is special easy to trade and you also save money. Instead of three or four gray filters, just use this one variable ND8-512 from Rollei and ideally already has the filter you had in mind.“