The 10-stop, 49mm Hoya ProND EX ND Filter 49mm 10-Stopfrom Hoya ProND EX ND Filter 49mm 10-Stopreduces the amount of light passing through the lens. When shooting video outdoors, you can set shutter speeds to match your frame rate while maintaining the depth-of-field you want. When shooting moving objects, you can achieve a motion blur that makes the image look more cinematic. For photography applications, the filter lets you use longer exposures or achieve a shallow depth-of-field in bright sunlight.

The ProND EX ND filter uses Hoya's ACCU-ND technology to prevent color shift in order to deliver consistent image quality. ACCU-ND ensures an equal reduction of light in both visible and IR spectrums so that you don't experience color shift when shooting in different outdoor conditions. The filter features 49mm threading on both the front and rear sides. Additional ND filters can be stacked on the front, or you can attach a threaded lens cap or other filter.

3.0 Optical Density    Front and Rear 49mm Threading    Glass Filter / Aluminum Ring    ACCU-ND No Color Shift Technology

Related Questions and Answers

Q: 1. What is the filter factor for this lens? Am I losing a full stop or less?

A: The filter factor for the Hoya Intensifier is 1.4, and you only lose a half a stop.

Q: 2. Is this filter compatible with Lee Filters Foundation Kit (Standard 4x4") B&H # LEFK ?

A: Yes, this filter will fit with the Lee Filter Foundation Kit.

Q: 3. Do these filter IR?

A: Hoya ProND EX 3-Filter Kit (77mm) does not filter IR.

Q: 4. What's the most popular diopter number?

A: There is no specific diopter number as it depends on the lens. But many do want more magnification. So in the kit, Hoya 49mm HMC Close-Up Filter Set II (+1, +2, and +4) it would be the +4.

Q: 5. Is the filter removable to add other 52mm filters?

A: No, when using the DEO-Tech VND Filter Holder with Built-In VND2-1000 Filter, the filter is not removable.

Q: 6. Can 72mm XS-Pro Digital ND Vario MRC-Nano be able to fit Sony FE 16-35mm F4 ZA with XS-Pro UV or UV + Polarizer without Vignette?

A: If filter diameter on your lens is 72 mm there will be no vignett with any 72 mm filter. Vignetting only occurs if the lens does not match crop factor for camera.Hope this helps.

Q: 7. Hi. Can this filter be used on a Leica 50mm APO-Summicron-M ASPH f/2.0 lens? Thank you.

A: The lens has a 39mm filter thread. This filter would not be compatible. B+W makes the same filter in 52mm. If you use a 39-52mm step up ring, then you will be able to use this filter on the Leica lens.Here is the step up ring: http://bhpho.to/1u0UKvfHere is the filter: http://bhpho.to/1qoJGa9

Q: 8. Preventing light leaks: Gasket available? Seal built in to holder?

A: you can try this BH #FOFG3P85

Q: 9. Hi there Is this ND compatible to use with Sony Fe 400/2.8—i.e. internally? Thanks

A: No, the B+W 40.5mm XS-Pro Digital ND Vario MRC-Nano Filter would not be compatible for use with the Sony FE 400mm f/2.8 GM OSS Lens. While the Sony FE 400mm f/2.8 GM OSS Lens does use 40.5mm filters, the B+W 40.5mm XS-Pro Digital ND Vario MRC-Nano Filter would be too thick for usage in the drop-in filter holder.

Q: 10. with an ultra-wide angle lens (i.e. Canon 16-35mm F4L with a full frame camera), do you get the dreaded X show up and if so at what density does it show up?

A: The X you can sometimes pick up in the image with a variable ND filter is caused most of the time by variable ND filters that go over 7-8 stops and lower quality ones.The B+W filter is fine. The one thing you might pick up is when set to the widest setting on that lens, 16mm you might pick up some vignette. And that is going to happen with that lens with most filters because of how wide it can go. The filter is designed with a thinner frame so it should be somewhat minimal.