Is the Sony FE 24-105mm F4 G OSS Lens sharp? This page visually answers that question. Shown above are 100% crops from a lab-captured 24mm f/5.6 test image. Observe the contrast and resolution of these results.
Is the Sony FE 24-105mm F4 G OSS Lens set to 24mm f/5.6 sharper than the Tamron 35-150mm f/2-2.8 Di III VXD Lens set to 70mm f/2.5? The image quality comparison above also answers that question. Switch between the results to see the sharpness differences between these lenses.