The 10-stop, 72mm Hoya ProND EX ND Filter 72mm 10-Stopfrom Hoya ProND EX ND Filter 72mm 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 72mm 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 72mm Threading    Glass Filter / Aluminum Ring    ACCU-ND No Color Shift Technology

Related Questions and Answers

Q: 1. How smooth is the rotation ring?

A: The rotation ring on this filter moves easily and smoothly--much better than most variable ND filters.

Q: 2. 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: 3. Can these be used along with their oem lens hoods?

A: Yes the Kase KW Revolution Professional ND Kit (72mm) can be used with the lens hood.

Q: 4. What is the widest focal length this can be used on with no vignetting?

A: I have the filter on my 24-70mm/f2.8 lens. So the widest is 24mm. I did not see any vignetting. I am very happy with this filter.

Q: 5. Preventing light leaks: Gasket available? Seal built in to holder?

A: you can try this BH #FOFG3P85

Q: 6. How is the weight of these close up filters? I want to use them (one at a time) on my Sony RX10 IV and am wondering if their weight is too great and would mess the lens at 600mm.

A: The following Hoya 40.5 filter will not work with Sony drop in filter system. The Hoya filters are to thick to fit in Sony drop in filter system.

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. are these limited by focal length? if so what is the ideal or limit range in mm ?

A: Hoya 72mm HMC Close-Up Filter Set II (+1, +2, and +4) will work with lenses that have a 72mm filter thread. It's not limited to focal length. Each filter size will work on lenses with the corresponding filter thread.

Q: 9. Hello...what is the front filter thread size (i.e., for attaching other filters, etc).Thanks

A: The 67mm XS-Pro Digital ND Vario MRC nano Filter has a 72mm filter thread.

Q: 10. Hello. I purchased this filter but I am having difficulty working out the stop values for each dotted marker increment on the outside ring? I assume the first dot is 1 stop and last dot is 5 stops. If you divide the rest by 1/3 stop or 1/2 stop, then it does not work out mathematically. Any tips or manuals for this lens?

A: Unfortunately, this is typical of most variable neutral density filters across the spectrum. The markings between the minimum and maximum do not accurately indicate a precise number of stops, and even brands than mark them with ND factors miss the mark significantly; some brands are off by 1/3~2/3 stops with engraved filter factors. While I am not familiar with the physics and/or engineering reason for this, a commonly accepted technique is to adjust the camera settings first and then dial in the VND filter factor. This might be hard/impractical with longer shutter speeds though, so preemptive testing might be necessary.