{"product_id":"amscope-4x-infinity-achromatic-objective-accurate-color","title":"AmScope 4X Infinity Achromatic Objective - Accurate Color","description":"\u003cp\u003eOur review of the AmScope A4X-INF-B finds it to be a focused, no-frills 4X objective for users who need reliable low-power imaging on infinity-corrected biological microscopes. The single biggest reason to buy is its achromatic correction paired with an infinity-corrected DIN design, which improves color accuracy and edge sharpness at 4X while fitting standard RMS mounts. For labs or hobbyists replacing or expanding low-power objectives, this lens delivers predictable performance with a 45mm parfocal distance and a rugged black finish.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4X Magnification:\u003c\/strong\u003e Provides a wide field of view and low-power overview imaging that is ideal for scanning slides and locating regions of interest quickly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAchromatic Correction:\u003c\/strong\u003e Reduces color fringing and improves color fidelity at edges, producing clearer images for biological observation and documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfinity-Corrected DIN Design:\u003c\/strong\u003e Works with infinity optical systems and modern microscope optical trains for consistent performance when used with compatible tubes and condensers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRMS Mounting Thread:\u003c\/strong\u003e Uses the standard 20.32mm RMS thread so it will fit most microscopes that accept RMS objectives without adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e45mm Parfocal Distance:\u003c\/strong\u003e Keeps focus consistent when switching objectives, speeding up workflow during multi-power examinations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Black Finish:\u003c\/strong\u003e The black exterior provides a professional appearance and a protective coating that resists routine handling wear.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis objective is suited to biology students, teaching labs, and research users who need a dependable low-power objective for scanning and routine observation on infinity-corrected microscopes. Its RMS thread and 45mm parfocal distance make it straightforward to integrate into existing sets of objectives.\u003c\/p\u003e\n\n\u003cp\u003eUsers who require higher magnification, specialized immersion media, or advanced plan correction should look elsewhere; this lens is a plain achromatic 4X that prioritizes compatibility and accurate color over field-flatening or specialized optical corrections.\u003c\/p\u003e\n\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAchromatic design enhances color accuracy and reduces chromatic aberration at low power.\u003c\/li\u003e\n\u003cli\u003eInfinity-corrected DIN form factor ensures compatibility with modern infinity optical systems.\u003c\/li\u003e\n\u003cli\u003eStandard RMS thread and 45mm parfocal distance allow easy swapping with other objectives.\u003c\/li\u003e\n\u003cli\u003eSolid black finish gives a durable, professional look and feel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot a plan or apochromatic objective, so field flatness and extreme color correction are limited compared with higher-end lenses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnification\u003c\/td\u003e\n\u003ctd\u003e4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumerical Aperture\u003c\/td\u003e\n\u003ctd\u003e0.10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical System\u003c\/td\u003e\n\u003ctd\u003eInfinity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Focal Length\u003c\/td\u003e\n\u003ctd\u003e180mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Thread\u003c\/td\u003e\n\u003ctd\u003eRMS 20.32mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParfocal Distance\u003c\/td\u003e\n\u003ctd\u003e45mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe AmScope 4X infinity achromatic objective is a practical, value-minded choice for anyone needing a reliable low-power lens on infinity-corrected microscopes. It delivers improved color accuracy and straightforward compatibility with RMS mounts, making it a good buy for educational and routine lab use where plan-level corrections are not required.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this objective fit my infinity-corrected microscope?\u003c\/strong\u003e\u003cbr\u003eIt fits microscopes that accept RMS 20.32mm threaded objectives and are designed for infinity optical systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the cover-glass thickness for this lens?\u003c\/strong\u003e\u003cbr\u003eThe specification lists achromatic correction; the product is intended for standard cover-glass thicknesses used in biological microscopy.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this objective immersion or dry?\u003c\/strong\u003e\u003cbr\u003eThis is a fixed nosecone, dry achromatic 4X objective intended for non-immersion use.\u003c\/p\u003e","brand":"AmScope","offers":[{"title":"Default Title","offer_id":48241268130011,"sku":"B0197JOZUU","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71mbHZtpeaL._AC_SL1500.jpg?v=1771065764","url":"https:\/\/gearmusthave.com\/products\/amscope-4x-infinity-achromatic-objective-accurate-color","provider":"GearMustHave","version":"1.0","type":"link"}