APS-C Sensor (Standard 1.5× Crop)
Direct Answer
The Standard APS-C Sensor (measuring 23.5 × 15.6 mm with an active area of 366.6 mm² and a 28.21 mm diagonal) operates with a 1.53× (commonly rounded to 1.5×) crop factor relative to 35mm full frame. Standardized across Sony E-mount (Alpha 6000 series), Nikon DX (Z50, D500), and Fujifilm X-mount systems, it is the most popular interchangeable-lens enthusiast format.
Source: CIPA / ISO 12232 / Advanced Photo System (APS-C) Heritage
Specs
| Width × Height | 23.5 × 15.6 mm (approx. 23.6 × 15.7 mm depending on silicon fab) |
| Diagonal Dimension | 28.21 mm |
| Active Surface Area | 366.6 mm² (approx. 42.4% of 35mm full frame) |
| Crop Factor | 1.53× (Standard 1.5× focal length multiplier) |
| Native Aspect Ratio | 3 : 2 (1.50 : 1) |
| 35mm Equivalent Calculation | A 35mm lens yields the field of view of a 53.5mm lens on full frame (35 × 1.53) |
| Camera Systems | Fujifilm X-T5/X-H2/X100VI, Sony A6700/FX30, Nikon Z50/Zfc, Ricoh GR III |
Advanced Photo System Heritage
The term APS-C (Advanced Photo System - Classic) derives from the 1996 Kodak/Fuji film cartridge standard ($25.1 \times 16.7\text{ mm}$). When digital DSLRs debuted, manufacturing full-frame silicon wafers was cost-prohibitive, making APS-C the sweet spot balancing affordable optical production with professional depth-of-field control and low-light performance.