Concrete is known for its high compressive strength but low tensile strength. Due to this low tensile strength, concrete is prone to cracking, which allows for corrosive factors, such as air, water vapor, water impact, and moisture to enter through the cracks, leading to accelerated damage to the concrete. This research aimed to determine the effect of variations in reinforcement ratio on the flexural crack width behavior in steel fiber-reinforced concrete beams, as observed through digital image correlation. To achieve this, high-quality steel fiber reinforced concrete beams measuring 10 × 15 × 120 cm were tested using the three-point bending method. The beams were reinforced with three variations of steel reinforcement bars, 4D10, 5D10, and 7D10, and given 0.75% steel fiber for all variations. The DIC method was used to observe the crack width and strain behavior. The results showed that as the reinforcement ratio increased, the deflection decreased weakly by 32%. On the other hand, the compressive strain increased significantly by 76.9%, while the tensile strain decreased relatively strongly by 49%. The crack width, however, was not directly influenced by variations in the reinforcement ratio, as indicated by a fragile relationship of 6.37%.