The Sigma 100-300mm f/4.5-6.7 DL is a budget-tier, compact telephoto zoom lens introduced for 35mm film SLRs. Weighing only 14.5 oz (410 g), it provides an affordable entry point to telephoto reach, but requires bright lighting and slower shutter speeds due to its dim maximum aperture.
This is a working lens but had not been in use in many years as I no longer own the camera for it