Showcase Olympus 7-14mm F2.8 PRO

AdamK

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It takes 105mm filters, no vignetting if the filters are "slim". Stacking two means vignetting but if both are slim it disappears at less than 8mm. The brand is STC. There are square filter holders that can take more than one without vignetting but I went for this one as its more compact and feels solid (like an original part of the lens). I will travel with it. One backdraw is that I've had a hard time finding slim ND 105mm filters... I know STC have one that is sold for this holder but it's just ND64 and also expensive.
Thanks for the additional info! Really liking the look/concept of this over the square filter arrangement I’m using now. Wish I’d known of this on a few months ago!
 

PeHa

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However, there's a thing to be aware of with the STC adapter
The adapter is designed so that the lens hood touches the filter when tightened. It means changing filter requires you to loosen the adapter and then the filter to avoid scratching the filter (not as straight forward as with threaded filters in general). A circular polarized filter will also touch the hood while turning which doesn't feel great... My solution to both these issues was to carefully grind the hood top, about one mm was sufficient. I know everyone wouldn't like to do that with an expensive lens but it solved both these issues. The hood does not touch the filters at all, solving the polarizer issue, and its now convenient to change filters as normal without loosening the adapter first. As the adapter is permanently on the lens, I dont worry at all about that lost hood mm :)
 
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Tom_Chan

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English page Screw-in Lens Adapter For Olympus 7-14mm F2.8 <- contains the top two text sections of the Chinese page 超廣角鏡頭鏡接環 for Olympus 7-14mm F2.8
The bottom 2 text sections are "Product specs and suggested price" and "Notes".

Product specs and suggested price
Works on Olympus M.ZUIKO Digital ED 7-14mm f/2.8 PRO Lens
Dimensions Ø10.5cm x 3.2cm
Filter size 105mm
Material 6061 Aluminum
Weight 49g (Adapter+Locking ring+Lens cap)
Made in Taiwan
Cerification EU RoHS 2.0
Suggested price (Adapter only) NT$ 4,400

Notes:
1. No vignetting when using STC ultra slim filter products
2. Basically what PeHa said in the post above, loosen the adapter before changing filter.
3. Vignetting due to the (7-14mm) lens design will still exist
4. Due to optical design structure reasons, when using Olympus adapter, some camera needs to be set to 3:2 format to avoid dark corners; also some camera will see dark corners when set to 7mm and focussing close-up. (So far we tested the following: dark corners appears due to sensor on Olympus E-M1, E-M5II, E-M10II, EPL6, Panasonic GX7. no dark corners on Olympus E-M5, E-M10, E-PL7, Panasonic GF1)
 

PeHa

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For info, I bought solely the adapter without STCs filters for other filter options (I think that made it cheaper, at least it was the intention :) ). With these slim filters, Benro CPL and NISI UV, there's no vignetting on an E-M1 II or an E-P5 (haven't tried the other cameras listed above). I couldn't find an 105mm slim ND3 filter so I bought a thicker Haida which means vignetting at the widest angles. All three filters stacked here (just to show, not for imaging).
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As I grinded the hood top a little, it means the filters will come a little closer to the lens and make the vignetting less than otherwise when stacking or using a thick filter like the Haida ND3 (with the Haida, vignetting is gone from ~7.5mm).
 
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PeHa

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My contribution to the stream of long exposure water images ;) Using grey filter, Haida ND3
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nardoleo

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did some photo shoot for work. this is one of my fav one.
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PeHa

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emoslaughter

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Some shots from Ohio State Reformatory (Mansfield reformatory) where Shawshank Redemption was filmed.
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