Single-lens reflex HDR can replace gradient color

Quick answer：

Single-lens reflex (SLR) cameras with HDR (High Dynamic Range) capabilities can produce images that capture a wider range of brightness levels compared to traditional photos. While they can simulate the effect of gradient colors to some extent, they may not fully replace the specific artistic effects that gradient colors can provide in photography. HDR is more about improving the overall exposure and detail in images, rather than creating gradient color transitions.