Singh-Ray 77mm (Thin Mount) Vari-ND Variable Neutral Density Filter

Singh-Ray 77mm (Thin Mount) Vari-ND Variable Neutral Density Filter

Singh-Ray 77mm (Thin Mount) Vari-ND Variable Neutral Density Filter

B&H # SIVNDT77 MFR # RT-86
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Product Highlights

  • Controls Up to 8 Stops of Light
  • Good for Blurring Motion
  • Holds Optical Quality at All Settings
  • Fast and Easy to Use
  • More Flexible than Using Many ND Filters
  • Excellent for Selective Focus
  • Excellent for Macro
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Singh-Ray RT-86 Overview

  • 1Description

The Singh-Ray 77mm (Thin Mount) Vari-ND Variable Neutral Density Filter - This neutral density filter gives you the capability to use fast film in bright sunlight. ND filters have several uses and offer the possibility to achieve otherwise unachievable results. They enable the shooter to adjust exposure without affecting color balance. ND filters reduce the amount of light reaching the film.

When used with a digital camera, you can effectively see how this filter works. After the initial exposure, you can check your LCD image and then make whatever change in exposure you feel you need to enhance your image. By rotating the ring, you can either increase or decrease the ND effect. This will be especially useful when trying to achieve "blurred" or "panned" shots.

The filter contains "index" points to help you mark your spot. They do not represent actual ND settings , i.e. non-calibrated - but are there to help you re-set your filter when you wish to recreate the effect.

Note: Singh-Ray cannot predict when vignetting may occur - especially with very wide angle lenses. To avoid vignetting, adjust your focal length, position, and/or composition to remove the vignetting - use your digital camera's display for reference.

Front ring can accept a Mor-Slo 5-stop Solid ND Filter or a Cokin holder for ND Grad Filters 1
Front Min/Max density ring lets you adjust density from 2-2/3 to 8 f/stops

Neutral Density Filters Have Four Main Uses

To enable slow shutter speeds to be used, especially with high speed films, to record movement in subjects such as waterfalls, clouds, or cars
To decrease depth of field by allowing wider apertures to be used, which helps separate subjects from their background
To decrease the effective ISO of high speed film (above ISO 400) and allow it to be used outdoors in bright situation
To allow cine and video cameras (which have fixed shutter speeds) to film subjects such as snow, sand or other bright scenes which could cause overexposure

Neutral Density Factors

ND.3 (exposure adjustment = 1 stop)
ND.6 (exposure adjustment = 2 stops)
ND.9 (exposure adjustment = 3 stops)
In the Box
Singh-Ray 77mm (Thin Mount) Vari-ND Variable Neutral Density Filter
  • Storage Case
  • Warranted Against Manufacturer's Defects for 90-Days
  • Table of Contents
    • 1Description

    Singh-Ray RT-86 Specs

    Filter Type Variable ND
    Combination Type Circular Polarizer, Warming
    Density 0.8 (2.6 Stops) to 2.4 (8 Stops)
    Shape Circle
    Circular Size 77 mm
    Front Accessory Thread / Bayonet Unthreaded
    Filter Thickness 0.41" / 10.5 mm
    Physical Feature Slim
    Filter Material Glass
    Coatings None
    Packaging Info
    Package Weight 0.26 lb
    Box Dimensions (LxWxH) 4.0 x 3.7 x 1.0"

    Singh-Ray RT-86 Reviews

    77mm (Thin Mount) Vari-ND Variable Neutral Density Filter is rated 4.4 out of 5 by 70.
    Rated 5 out of 5 by from Great product, great functionality I know some folks have posted a lot of complaints about vignetting and 'X' crosses, but I haven't really experienced much if any of these issues. Maybe I'm not seeing them because I primarily use this on a 50mm lens with a 72mm to 77mm step down ring.I've found this thing coming in handy many times in bright sunlight, or trying to drop a few stops to get just the right 'blurred' water effect. If I tried to do this with individual stop filters, I'd spend 3x the time trying to get a shot.Highly recommended.
    Date published: 2013-04-09
    Rated 4 out of 5 by from Very convenient, works great, vignetting I use this product to facilitate motion effects on bright days. Using a nikon full frame camera (D700), I found vignetting somewhere below 35mm, and it seems I was able to get to close to 24mm. The product is incredibly convenient, allowing you to achieve the shutter speed you want at a given aperture. To get the high end of the range of f-stops this product offers you would have to stack filters, which would inevitably lead to vignetting, so I don't view vignetting at wide angles a giant negative, just something to be aware of.
    Date published: 2011-06-20
    Rated 5 out of 5 by from This Variable ND filter actually works I tried cheaper ND filters that seem great until you actually use them. The biggest problem that I had using a similar product was that I could not get an in-focus image no matter what. Since purchasing the Singh-Ray, I have used it on Canon 24mm, 50, 85, and 70-200, and everything works perfectly with no perceptible loss in image quality. I use the filter exclusively for allowing me to shoot in bright sunlight at a shutter speed that is within the max sync speed of my camera and flash. I haven't tried it for landscape work so can not comment on colour shifts, etc...
    Date published: 2011-07-03
    Rated 5 out of 5 by from Great Filter The Singh-Ray Vari-ND Filter is a must have for those wishing to photograph water to get that smooth-flow effect. This filter gives you a choice of 2 to 8 stops, and allows you to get those 1+ second exposures when you can't drop your ISO any lower or stop your lens down to obtain the image you are trying to create. Just dial in the amount of density to suit your shutter speed or create your effect. Easy. Leave it set at 2 to focus, and dial in more if you need it. This filter is also made with a warming filter attached, so if you like that effect as well... If you only want to buy 1 ND filter, this one covers them all. Why carry 3 or 4 ND filters when you can do it with one? Granted, buying one of the others may be less expensive, but then you are confined to that single grade of neutral density. It also works awesome on those blurred ocean effects at sunset. The only downsides to this filter are: (1) - slight vignetting at wide angles, depending on your lens. I am using it with a 24-70 f2.8 Nikkor, and the vignetting is noticeable until about 28mm. The 17-35 would experience the same thing, even with the thin mount (the one I own). I adjust my composition to account for the vignetting, and crop it out. And (2) - your factory Nikon lens cap won't work with the thin mount. If you plan on keeping this filter on your lens, I would recommend buying the slip on lens cap they offer. There are no threads on the front either, but that is not an issue for me, as I never stack filters. Bottom line - This is not a cheap accessory, but I would recommend it as a vital part of your gear if you like blurred water effects, or need to get longer exposures. If something bad happened to mine today, I'd get another tomorrow, no question. Like most quality pieces of gear, it may cost you, but it is worth it. If you need or use ND filters, this is the one to have in your bag! (emphasis on 1! )
    Date published: 2009-07-12
    Rated 5 out of 5 by from Pricey but its the best out there I love how I can change the amount of light coming in on the fly. i dont need to be carrying a bunch of nd filters. Really awesome for video if you want that cinematic look. For that cinematic look, set your camera to shoot 24fps and your shutter to 1/48 or 1/50.....from there its just a matter of how wide you want the aperture to be and you can control the exposure with this product. Also quality is doesn't soften the pics or video. I have a cropped sensor and it stops vinetting on my 10-22mm at around 13mm. If you got the money, I do recommend this awesome product
    Date published: 2011-07-17
    Rated 5 out of 5 by from Wish I bought this sooner! If you are reading the reviews and considering this purchase -do it. Seriously. I put it off for years and really wish I made this investment sooner. Knowing what I know now... all those missed shots I could have made over the last few years if only I had this filter! If you want to blur motion or have a shallow depth of field in bright daylight -you need this filter. I'm using it on a Nikon D300s + 70-200mm f/2.8G and this filter allows me to shoot fast and wide in bright daylight. Variable 2-8 stops of control at your fingertips is like magic! The first day out with this filter I captured shots that would have been impossible otherwise. It really would be nice if the Thin-Mount version included a cap since you can't use your regular lens cover. It doesn't so make sure you also purchase the Kaiser 80mm PUSH-ON LENS CAP - KALC80.
    Date published: 2012-03-15
    Rated 4 out of 5 by from Great for portraits! I've been using this ND filter for portrait work using speedlites and my 50mm F/1.2L and it works like a charm thus far! I get no vignetting from my 50L, nor on my 24-70L and it widest angle(ON CROP SENSOR! - 60D). I've also used it on a couple landscape shots just to play around and it works great :) I've seen little no no loss of sharpness or quality! Only reason I give it 4 stars is due to the fact that there are no markings on how many stops you are losing on the filter itself, you kinda just have to guess. Other than that, flawless, can't wait to use it on full frame!
    Date published: 2012-02-25
    Rated 3 out of 5 by from Works, Vignetting can be bad I have the thin mount, the product appears built with good quality. It's easy to use. However, on a full frame sensor at 24mm, the vignetting is quite bad. Need better measurements to determine exactly what focal length I can use, 35mm initially appeared fine. But this means I still need to buy another ND filter for wide angle shots.
    Date published: 2010-07-26
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    Why do you only carry the filter in the 77mm size?
    Asked by: Anonymous
    Singh-Ray manufactures the Vari ND in nine sizes - from 49mm to 82mm - so you may want to look around or visit Singh-Ray's site.
    Answered by: David V.
    Date published: 2018-08-27


    Can you use the Nikon hood when this filter is attached to a 24-120 zoom or 24mm prime?
    Asked by: George G.
    No, not at the 24mm setting . It will cause some vignetting. Only a little though, so you could shoot wide and crop out.
    Answered by: Kirk G.
    Date published: 2018-08-27


    I meant to ask... can the Singh-Ray 77mm Thin Mount Variable ND filter be used with a lens hood?
    Asked by: Hugh
    I don't know, sorry.
    Answered by: larry j.
    Date published: 2018-08-27


    If I use a polarizer with this filter, where do I place the neutral density, in front or behind the polarizing filter or will it work both ways ? The answer will help me choose between a thin or regular mount filter. Thanks.
    Asked by: Michel F.
    My opinion is I would put the NDExposure filter on first. The polarizer on the outside because you will need to rotate to the desired position. The downside is you will need to set the polarizer, focus then set the nd number.
    Answered by: Steve R.
    Date published: 2018-08-27


    Will this filter vignette on the Nikon 16-35/f4 lens?
    Asked by: George T.
    I also shoot this on the 24-70 and don't have a vignette problem unless I also have my polarizer on there too. But on the 16 end of the 16-35, even in the thing form, it may vignette a wee bit. Don't be surprised.
    Answered by: David V.
    Date published: 2018-08-27


    Is this filter made of glass like the heliopan
    Asked by: Anonymous
    Yes it is made of glass. Singh-Ray filters are made of the highest quality materials.
    Answered by: Matthew C.
    Date published: 2018-08-27
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