Is the Tamron 35-150mm f/2-2.8 Di III VXD Lens sharp? This page visually answers that question. Shown above are 100% crops from a lab-captured 35mm f/11.0 test image. Observe the contrast and resolution of these results.
Is the Tamron 35-150mm f/2-2.8 Di III VXD Lens set to 35mm f/11.0 sharper than the Tamron 28-200mm f/2.8-5.6 Di III RXD Lens set to 200mm f/11.0? The image quality comparison above also answers that question. Switch between the results to see the sharpness differences between these lenses.