{"niche":"有哪些最紧凑、最便携的单反相机？","description":"What are the most compact and portable DSLR cameras?","products":[{"brand":"Canon","model":"EOS 250D (Rebel SL3)","price_gbp":411.31,"origin_country":null,"specs":{"iso_range":"100 - 25600 (expandable to 51200)","frame_rate":"5 fps","megapixels":"24.1","sensor_size":"22.3 x 14.9 mm","focus_points":"9","shutter_speed":"30 - 1/4000 sec"},"confidence_score":null,"sources":[{"label":"B&H Photo Video","url":"https://www.bhphotovideo.com/c/product/1473086-REG/canon_3453c001_eos_rebel_sl3_dslr.html","currency":"USD","source_country":"US","price":549.0,"price_gbp":411.31,"scraped_at":"2026-06-09T04:44:05.133935"},{"label":"B&H Photo Video (with 18-55mm)","url":"https://www.bhphotovideo.com/c/product/1473087-REG/canon_3453c002_eos_rebel_sl3_dslr.html","currency":"USD","source_country":"US","price":699.0,"price_gbp":523.68,"scraped_at":"2026-06-09T04:44:07.988226"},{"label":"The-Digital-Picture (buy links include Adorama/Amazon)","url":"https://www.the-digital-picture.com/Reviews/Camera-Specifications.aspx?Camera=1425","currency":"USD","source_country":"US","price":649.0,"price_gbp":486.22,"scraped_at":"2026-06-09T04:44:10.971224"}],"summary":"Compact, lightweight entry-level DSLR with a 24.1MP APS-C sensor, Dual Pixel CMOS AF in live view, 4K video (cropped) and a fully articulating touchscreen. Suits beginners and vloggers who want a small DSLR with good stills and easy-to-use autofocus in live view."}]}