Technical Evidence — EF28mm f/1.8 USM
Reservoir facts published for this SKU with provenance URLs and content hashes. Generated by PRODUCTGRAPH_REPUBLISH_OVERLAY_001.
Entity Metadata
| Field | Value |
|---|---|
| Manufacturer or brand | Canon |
| Entity type | Lens |
| Product ID | canon-ef-28-f1-8-usm |
| EXTRACTED fact count | 16 |
| ABSENT record count (deduped rows shown) | 2 |
| Reservoir | data/product_knowledge_reservoir/ |
EXTRACTED reservoir facts (16)
| Fact ID | Family | Attribute | Value | Status | Source URL | Hash |
|---|---|---|---|---|---|---|
fact:a0fdc754835b6e55 | specs | product_name | EF28mm f/1.8 USM - Canon Camera Museum | EXTRACTED | global.canon/en/c-museum/product/ef331.html | b2b9b1fa18cfb208 |
fact:28f96248fe00e590 | specs | focal_length | 28mm | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 112ed0239f435e3b |
fact:309f3bdba7423238 | specs | max_aperture | f/1.8 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | c767bfcd4ecd4c42 |
fact:aeeaad6e2ea9fe13 | specs | min_aperture | 22 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 865dcd34868e6c02 |
fact:cbdf5bd7f422d711 | specs | weight_g | 310 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | d7bc041955e47cb5 |
fact:547dbbd1c8f4f54d | specs | filter_diameter_mm | 58 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 7ba429e337a53b99 |
fact:e87da17def6287a1 | specs | closest_focusing_distance_m | 0.25 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 404796ecd5ffb5a3 |
fact:d4654bad3e7cce58 | specs | diaphragm_blades | 7 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 081cedaf16259cde |
fact:797010d5a8f66db0 | specs | lens_elements | 10 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 5f61bbfa94ca42c9 |
fact:a8e84c6ca26e156d | specs | lens_groups | 9 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 333f0409db7a2d39 |
fact:6241be7088bbace3 | specs | marketed_date | September 1995 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 47352a68bb435139 |
fact:4c6618a0cf66db6a | specs | max_magnification | 0.18 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | e884af7de00061e9 |
fact:905762f1fae786af | specs | original_price | 70,000 yen | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 86aee1190ffe8d63 |
fact:1c148dbe6b1ae0ca | specs | raw_spec:maximum_diameter_x_length_mm | 73.6 x 55.6 | EXTRACTED | global.canon/en/c-museum/product/ef331.html | 380ece74b6c281eb |
fact:189b76e2b0b0cbb9 | manuals | product_owner_manual_pdf | https://gdlp01.c-wss.com/gds/4/0300003374/02/ef28f18usm-im3-eng.pdf | EXTRACTED | my.canon/en/support/0300337401?model=EF28mm+F1.8+USM | 0cd24a6e072d759d |
fact:651c10433266fb2d | manuals | product_manual_or_document | https://gdlp01.c-wss.com/gds/4/0300003374/02/ef28f18usm-im3-eng.pdf | EXTRACTED | my.canon/en/support/0300337401?model=EF28mm+F1.8+USM | 51d106adb634989b |
ABSENT_ON_SOURCE records
| Fact ID | Family | Attribute | Status | Checked source |
|---|---|---|---|---|
fact:d4e278d7808155d7 | compat | camera_body_or_teleconverter_matrix | ABSENT_ON_SOURCE | global.canon/en/c-museum/product/ef331.html |
gap:synthetic:canon-ef-28-f1-8-usm:error_codes:error_code_table | error_codes | error_code_table | ABSENT_ON_SOURCE | — |