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What is the deal with Optima & ZBW glass? in Filter Discussions & Tests Started by Andrea B., 13 Sep 2016 Filters 1 2 Last Post by Bernard Foot, 15 Jan 2020	27 replies 3,800 views	Bernard Foot Posted 13 Sep 2016
First use of Kolari UV filter in portrait in Filter Discussions & Tests Started by DonPilou, 04 Jan 2017 Filters, UV Lens, UV Portrait 1 2 Last Post by JCDowdy, 26 Jan 2017	21 replies 5,787 views	JCDowdy Posted 04 Jan 2017
Investigating IR-Leak from the Baader U-Filter in Filter Discussions & Tests Started by kogakunippon, 22 Jul 2016 Filters 1 2 Last Post by kogakunippon, 19 Nov 2016	20 replies 6,316 views	kogakunippon Posted 22 Jul 2016
Getting a filter on a fisheye in Filter Discussions & Tests Started by EHH, 30 Sep 2016 Filters 1 2 Last Post by EHH, 18 Nov 2016	22 replies 4,628 views	EHH Posted 30 Sep 2016
Oxidation of ionic glass in Filter Discussions & Tests Started by Reed F. Curry, 30 Oct 2016 Filters Last Post by Cadmium, 30 Oct 2016	8 replies 2,515 views	Cadmium Posted 30 Oct 2016
[Filter Test] Looping around with U-340/4.00mm [Added: G... in Filter Discussions & Tests Started by Andrea B., 19 Oct 2016 Filters Last Post by Cadmium, 19 Oct 2016	3 replies 1,271 views	Cadmium Posted 19 Oct 2016
[Filter Test] Raw Colour Differences in 6 UV-Pass Filters in Filter Discussions & Tests Started by Andrea B., 28 Aug 2016 Filters Last Post by Andrea B., 11 Oct 2016	2 replies 1,293 views	Andrea B. Posted 28 Aug 2016
[Filter Test 340/10 #3] Trying again with the 340/10 in Filter Discussions & Tests Started by Andrea B., 28 Sep 2016 Filters Last Post by Andrea B., 05 Oct 2016	14 replies 3,183 views	Andrea B. Posted 28 Sep 2016
La La :-) in Filter Discussions & Tests Started by Cadmium, 05 Sep 2016 Filters Last Post by Cadmium, 21 Sep 2016	5 replies 1,950 views	Cadmium Posted 05 Sep 2016
[Filter Test] AndreaU MK II with BU, SEU, U-360 :: Standa... in Filter Discussions & Tests Started by Andrea B., 17 Sep 2016 Filters Last Post by Andrea B., 19 Sep 2016	6 replies 1,581 views	Andrea B. Posted 17 Sep 2016
[Filter Test] AndreaU MK II with BU, SEU, U-360 :: Bouque... in Filter Discussions & Tests Started by Andrea B., 16 Sep 2016 Filters Last Post by Andrea B., 17 Sep 2016	2 replies 1,491 views	Andrea B. Posted 16 Sep 2016
[Filter Test] UV/IR-Block & IR-Block Filters on a Con... in Filter Discussions & Tests Started by Andrea B., 03 Sep 2016 Filters Last Post by Andrea B., 08 Sep 2016	7 replies 3,002 views	Andrea B. Posted 03 Sep 2016
Lamination? Stack? Two Filter Makers Discuss Terminology in Filter Discussions & Tests Started by Reed F. Curry, 05 Sep 2016 Filters Last Post by Andrea B., 06 Sep 2016	5 replies 1,136 views	Andrea B. Posted 05 Sep 2016
Visual Bandpass Filters in Filter Discussions & Tests Started by Cadmium, 04 Sep 2016 Filters Last Post by Cadmium, 04 Sep 2016	0 replies 988 views	Cadmium Posted 04 Sep 2016
[Filter Test] Summary of Recent Tests with StraightEdgeU... in Filter Discussions & Tests Started by Andrea B., 03 Sep 2016 Filters Last Post by Andrea B., 03 Sep 2016	0 replies 739 views	Andrea B. Posted 03 Sep 2016
Longpass filter series test in Filter Discussions & Tests Started by Mark, 01 Sep 2016 Filters Last Post by Mark, 01 Sep 2016	2 replies 840 views	Mark Posted 01 Sep 2016
Longpass filter Passes in Filter Discussions & Tests Started by Mark, 27 Aug 2016 Filters Last Post by Andrea B., 30 Aug 2016	1 reply 1,057 views	Andrea B. Posted 27 Aug 2016
[Filter Test] The Evil Clown of Middletown as seen by BU... in Filter Discussions & Tests Started by Andrea B., 27 Aug 2016 Filters Last Post by Andrea B., 27 Aug 2016	0 replies 1,286 views	Andrea B. Posted 27 Aug 2016
[Filter Test] SEU, BU, U360-Stack and The Standards in Filter Discussions & Tests Started by Andrea B., 26 Aug 2016 Filters Last Post by Andrea B., 26 Aug 2016	1 reply 1,130 views	Andrea B. Posted 26 Aug 2016
How good is the Baader U at suppressing IR? in Filter Discussions & Tests Started by nfoto, 24 Jul 2016 Filters 1 2 Last Post by OlDoinyo, 18 Aug 2016	37 replies 8,555 views	OlDoinyo Posted 24 Jul 2016
New UV-Pass Filter from UVR Optics in Filter Discussions & Tests Started by Andrea B., 16 Aug 2016 Filters Last Post by Andrea B., 16 Aug 2016	0 replies 1,225 views	Andrea B. Posted 16 Aug 2016
Filter Thickness in Filter Discussions & Tests Started by Adrian, 28 Jul 2016 Filters Last Post by Cadmium, 29 Jul 2016	3 replies 994 views	Cadmium Posted 28 Jul 2016
UV Transmission Filters: Performance Evaluation in Filter Discussions & Tests Started by Mark, 06 Jun 2016 Filters Last Post by Cadmium, 30 Jun 2016	17 replies 3,372 views	Cadmium Posted 06 Jun 2016
BG24A stack in Filter Discussions & Tests Started by Cadmium, 07 May 2016 Filters Last Post by Cadmium, 12 May 2016	5 replies 1,714 views	Cadmium Posted 07 May 2016
Using Hoya U340 for landscape photography in Filter Discussions & Tests Started by DonPilou, 01 May 2016 Filters, Infrared, UV Lighting Last Post by igoriginal, 10 May 2016	11 replies 4,120 views	igoriginal Posted 01 May 2016