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Revoring review

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nandbytes View Drop Down
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Joined: 09 January 2014
Country: United Kingdom
Location: London
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Posts: 3303
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    Posted: 21 January 2021 at 08:54
For those of you who don't know what the "Revoring" have a look here:
https://www.kickstarter.com/projects/revoring/revoring-a-variable-step-ring-for-your-camera-lens-filters

Basically a step up/down ring on steroids so you don't need to carry a bunch of them for various filter sizes. Comes in various ranges but I have the 67-82mm range for my lenses.

There are two varieties one with built-in variable ND+CPL and other without any filter so you can add your own. I have got both varieties.

I tested the variable ND+CPL with my 24mm f1.4 lens on A7RIV (ideally would have been better tested on a 16-35mm lens but I don't have one at the moment).

The colour cast is very minimal, gives a slightly warmer tone to the image (may actually work in my favour in some cases). From the original image to the ones with variable ND I had to reduce the WB from 6050 to 5600.
The other important part is impact on image quality and I am really pleased with performance here... there is barely any impact on sharpness. I have tried many ND filters in the past where they killed the sharpness but this one performs admirable for a variable ND.
The dreaded "X" pattern of variable ND filter sets soon after 5 stops on a 24mm lens. Sets in much later on my 85mm lens but haven't tested at which point just yet. I will test that, post the findings later on this thread and any other tests if people want to see any more.
Unfortunately my current UWA is a 12-24mm which doesn't take filters... so the widest I can test is a 24mm lens.

The original - no filter - f/8, 1/160s, ISO100


1.5 stops - also base minimum- 1/60s


slightly under 3stops - 1/25s


~4 stops - 1/10s


~5 stops - 1/5s


100% Comparison (left without filter, right with filter @ 4stops)
my flickr
A1, A7C
 



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