{"product_id":"bdr-fs05","title":"BDR-FS05 Barndoor for Fresnel 500 W (BDR-FS05)","description":"\u003c!-- Sub-type: L-A --\u003e\u003c!-- Source: bdr-fs05-barndoor-fresnel-500w.md --\u003e\u003cstyle\u003e.kupo-section-title {  margin: 1.25rem 0 1rem 0;  font-size: 22px !important;  font-weight: 700;  line-height: 1.3;  color: #2C3E50 !important;  letter-spacing: 0;}.product-description h3 {  color: #2C3E50 !important;  font-size: 18px !important;  font-weight: bold;  margin-top: 1.5rem;  margin-bottom: 0.75rem;  line-height: 1.35;  letter-spacing: 0;}.product-description,.product-description p,.product-description li {  color: #222222 !important;}\u003c\/style\u003e\u003ch2 class=\"kupo-section-title\"\u003eProduct Description\u003c\/h2\u003e\u003cdiv class=\"product-description\" data-sku=\"BDR-FS05\" data-color=\"Matt black\"\u003e  \u003ch3\u003eOverview\u003c\/h3\u003e  \u003cp\u003eThe BDR-FS05 is a 4-leaf barndoor for KUPO FS-500 (500 W \/ 650 W Fresnel), made for shaping the soft-edged output of Fresnel and prism convex class fixtures. It mounts into the fixture gel-frame slot and gives the operator four adjustable leaves for trimming spill without adding flags, clamps, or extra grip hardware.\u003c\/p\u003e  \u003ch3\u003eWhy It Matters\u003c\/h3\u003e  \u003cp\u003eA Fresnel beam is intentionally soft, so the fixture itself does not provide a hard cutoff. Barndoors become the working edge of the light, especially for top light, back light, and sidelight positions where spill can land on scenery, masking, or camera frame.\u003c\/p\u003e  \u003ch3\u003eKey Features\u003c\/h3\u003e  \u003cul\u003e    \u003cli\u003e400 x 153 mm approximate outer dimensions match the host fixture size for a proper front-of-fixture fit.\u003c\/li\u003e    \u003cli\u003e Four adjustable leaves let crew tune the beam edge while keeping the Fresnel focus and fixture position unchanged.\u003c\/li\u003e    \u003cli\u003e Foldable blade construction makes the accessory easier to store with the matching fixture package.\u003c\/li\u003e    \u003cli\u003eMatt black finish reduces reflections at the fixture face during high-output tungsten use.\u003c\/li\u003e  \u003c\/ul\u003e  \u003ch3\u003eHost Fixture\u003c\/h3\u003e  \u003cp\u003eDesigned for KUPO FS-500 (500 W \/ 650 W Fresnel). Use BDR-FS05 for the FS-500 family and BDR-FS10 for the larger FS-1000 \/ PS-1000 fixtures.\u003c\/p\u003e  \u003ch3\u003eApplications\u003c\/h3\u003e  \u003cp\u003eA useful choice for theatre Fresnel rigs, studio top lights, back lights, rehearsal rooms, and small venue fixtures where beam control has to happen directly at the lamp face.\u003c\/p\u003e  \u003ch3\u003e Compatibility\u003c\/h3\u003e  \u003cp\u003eUse with the listed KUPO host fixture family and match the smaller BDR-FS05 or larger BDR-FS10 size to the Fresnel or prism convex model.\u003c\/p\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e{  \"@context\": \"https:\/\/schema.org\",  \"@type\": \"Product\",  \"name\": \"BDR-FS05 Barndoor for Fresnel 500 W (BDR-FS05)\",  \"description\": \"The BDR-FS05 is a 4-leaf barndoor for KUPO FS-500 (500 W \/ 650 W Fresnel), made for shaping the soft-edged output of Fresnel and prism convex class fixtures. It mounts into the fixture gel-frame slot and gives the operator four adjustable leaves for trimming spill without adding flags, clamps, or extra grip hardware.\",  \"brand\": {    \"@type\": \"Brand\",    \"name\": \"KUPO\"  },  \"manufacturer\": {    \"@type\": \"Organization\",    \"name\": \"KUPO CO. LTD\"  },  \"category\": \"Lighting Solution \u003e Barndoors \u0026 PAR Accessories\",  \"sku\": \"BDR-FS05\",  \"mpn\": \"BDR-FS05\",  \"color\": \"Matt black\",  \"material\": \"Metal\",  \"additionalProperty\": [    {      \"@type\": \"PropertyValue\",      \"name\": \"Product Type\",      \"value\": \"4-leaf barndoor\"    },    {      \"@type\": \"PropertyValue\",      \"name\": \"Host Fixture\",      \"value\": \"KUPO FS-500 (500 W \/ 650 W Fresnel)\"    },    {      \"@type\": \"PropertyValue\",      \"name\": \"Outer Dimensions\",      \"value\": \"400 x 153 mm\"    },    {      \"@type\": \"PropertyValue\",      \"name\": \"Construction\",      \"value\": \"Foldable, adjustable blades\"    },    {      \"@type\": \"PropertyValue\",      \"name\": \"Finish\",      \"value\": \"Matt black\"    }  ]}\u003c\/script\u003e\u003cstyle\u003e.kupo-faq-seo-section {  margin-top: 2rem;}.kupo-faq-seo-item {  margin-bottom: 1.25rem;}.kupo-faq-seo-item h3 {  color: #2C3E50 !important;  font-size: 17px !important;  font-weight: 600;  margin-bottom: 0.4rem;  line-height: 1.35;  letter-spacing: 0;}.kupo-faq-seo-item p {  color: #222222 !important;  margin-top: 0;}\u003c\/style\u003e\u003csection class=\"kupo-faq-seo-section\"\u003e  \u003ch2 class=\"kupo-section-title\"\u003e Frequently Asked Questions\u003c\/h2\u003e  \u003cdiv class=\"kupo-faq-seo-item\"\u003e    \u003ch3\u003eWhy does a Fresnel need a barndoor if the beam is already soft?\u003c\/h3\u003e    \u003cp\u003eThe soft beam controls focus, not spill. The barndoor gives the operator a physical cutoff at the fixture face.\u003c\/p\u003e  \u003c\/div\u003e  \u003cdiv class=\"kupo-faq-seo-item\"\u003e    \u003ch3\u003e Can I swap the 500 W and 1000 W barndoors?\u003c\/h3\u003e    \u003cp\u003eNo. The front sizes are different, so the barndoor should be matched to the correct FS or PS host fixture.\u003c\/p\u003e  \u003c\/div\u003e  \u003cdiv class=\"kupo-faq-seo-item\"\u003e    \u003ch3\u003eWill this replace external flags?\u003c\/h3\u003e    \u003cp\u003eIt can handle many everyday spill cuts, but large scenery cuts or very precise camera work may still need external flags.\u003c\/p\u003e  \u003c\/div\u003e\u003c\/section\u003e\u003cscript type=\"application\/ld+json\"\u003e{  \"@context\": \"https:\/\/schema.org\",  \"@type\": \"FAQPage\",  \"mainEntity\": [    {      \"@type\": \"Question\",      \"name\": \"Why does a Fresnel need a barndoor if the beam is already soft?\",      \"acceptedAnswer\": {        \"@type\": \"Answer\",        \"text\": \"The soft beam controls focus, not spill. The barndoor gives the operator a physical cutoff at the fixture face.\"      }    },    {      \"@type\": \"Question\",      \"name\": \"Can I swap the 500 W and 1000 W barndoors?\",      \"acceptedAnswer\": {        \"@type\": \"Answer\",        \"text\": \"No. The front sizes are different, so the barndoor should be matched to the correct FS or PS host fixture.\"      }    },    {      \"@type\": \"Question\",      \"name\": \"Will this replace external flags?\",      \"acceptedAnswer\": {        \"@type\": \"Answer\",        \"text\": \"It can handle many everyday spill cuts, but large scenery cuts or very precise camera work may still need external flags.\"      }    }  ]}\u003c\/script\u003e","brand":"KUPO Stage","offers":[{"title":"Beam Control Accessory \/ Barndoor","offer_id":53907495125291,"sku":"BDR-FS05","price":0.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/6887\/6843\/files\/BDR-FS05_b.jpg?v=1782110963","url":"https:\/\/kupostage.com\/products\/bdr-fs05","provider":"KUPO Stage","version":"1.0","type":"link"}