{"product_id":"adjustable-iris-aperture-diaphragm-adapter-m30-to-m37-precise","title":"Adjustable Iris Aperture Diaphragm Adapter M30 to M37 - Precise","description":"\u003cp\u003eIn this review the Adjustable Iris Aperture Diaphragm Adapter is evaluated for users who need precise manual control of aperture size on PVS-14 style optics and similar equipment; the single biggest reason to buy is its smooth, reliable aperture adjustment that ranges from a 1.5mm minimum to a 26mm maximum, giving real flexibility for both low-light and daytime use. The adapter pairs a compact M30-M37 mounting range with a straightforward handle for quick changes, and it is built from aviation metal so it feels rugged enough for field use.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable aperture range:\u003c\/strong\u003e The 1.5mm to 26mm iris covers tight pinpoint stops to wide openings so users can control light precisely for different conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread compatibility:\u003c\/strong\u003e The M30 to M37 sizing makes it usable with common PVS-14 housings and other equipment that accept those thread sizes, reducing the need for multiple adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid construction:\u003c\/strong\u003e Machined from aviation metal, the adapter offers a rugged feel and reliable performance for repeated field adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple manual operation:\u003c\/strong\u003e The external handle provides direct, tactile control of the diaphragm diameter for quick, on-the-fly changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes 37mm UV lens:\u003c\/strong\u003e The product details note a 37mm UV lens included with the PVS14 adjustable iris module, adding basic protection and filtration for front optics.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis accessory is aimed at night vision users and photographers who need an economical, mechanical way to vary aperture on PVS-14 style optics, lens reversing setups, or other small optical systems that accept M30-M37 interfaces. It suits technicians, hobbyists, and field operators who value straightforward, durable hardware and manual control over electronic automation.\u003c\/p\u003e\u003cp\u003eThose who should look elsewhere include users who require electronic or remote-controlled iris systems, or those needing integrated multi-element optics with calibrated aperture markings for lab-grade photometry. This is a mechanical adapter built for practicality and versatility rather than precision metrology.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSmooth, tactile adjustment makes it easy to change aperture quickly in the field.\u003c\/li\u003e\n\u003cli\u003eWide 1.5mm to 26mm range offers versatility from tight stops to wide-angle light intake.\u003c\/li\u003e\n\u003cli\u003eDurable aviation metal construction provides reliable long-term performance.\u003c\/li\u003e\n\u003cli\u003eIncluded 37mm UV lens adds a basic protective and filtering element to the assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMechanical operation is manual only, so it lacks the precision indexing or remote control of electronic irises.\u003c\/li\u003e\n\u003cli\u003eCompatibility depends on M30-M37 threads, so additional adapters may be needed for other thread sizes.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eAdjustable iris diaphragm adapter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture range\u003c\/td\u003e\n\u003ctd\u003e1.5mm to 26mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread sizes\u003c\/td\u003e\n\u003ctd\u003eM30 to M37\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded lens\u003c\/td\u003e\n\u003ctd\u003e37mm UV lens\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAviation metal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperation\u003c\/td\u003e\n\u003ctd\u003eManual handle adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Adjustable Iris Aperture Diaphragm Adapter is a practical, value-oriented accessory for anyone using PVS-14 style optics or small lens assemblies who needs reliable manual control of light. Its broad aperture range, solid metal build, and simple handle control make it a sensible buy for field use, offering tangible benefits in image clarity and light sensitivity without unnecessary complexity.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this fit a PVS-14 housing?\u003c\/strong\u003e\u003cbr\u003eYes, the adapter is specified for M30 to M37 compatibility and is described for use with PVS-14 night vision devices.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the aperture adjustable in small increments?\u003c\/strong\u003e\u003cbr\u003eYes, the manual handle provides smooth control across the 1.5mm to 26mm range, though it does not include indexed preset stops.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the build material?\u003c\/strong\u003e\u003cbr\u003eThe body is made from aviation metal, designed for rugged and reliable performance in field conditions.\u003c\/p\u003e","brand":"folisobo","offers":[{"title":"Default Title","offer_id":48251707687131,"sku":"B0CKPKGJ3K","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61a4oUwFkiL._AC_SL1500.jpg?v=1776279542","url":"https:\/\/gearmusthave.com\/products\/adjustable-iris-aperture-diaphragm-adapter-m30-to-m37-precise","provider":"GearMustHave","version":"1.0","type":"link"}