Sigma 100-300mm, DL

The Sigma 100-300mm f/4.5-6.7 DL is a lightweight film-era telephoto zoom covering a useful range for wildlife, sport, outdoor photography and subjects that are simply too far away for a standard lens.

The 100-300mm range takes you from moderate telephoto through to a much tighter 300mm view, giving you plenty of flexibility without needing several separate telephoto lenses.

It's a straightforward older telephoto without modern optical stabilisation, aimed more at giving you useful reach in a relatively compact and affordable package.

Mount: Pentax K / KAF

Best for

• 35mm film photography
• Wildlife
• Sport
• Outdoor photography
• Distant subjects
• Learning telephoto photography
• Budget telephoto setups
• Photographers building an older SLR kit

What to expect

The 100-300mm focal range is entirely telephoto on a 35mm camera. At 100mm you've got a useful perspective for portraits, events and tighter compositions, while 300mm gives you substantially more reach for wildlife, sport and distant details.

The maximum aperture changes from f/4.5 at the 100mm end to f/6.7 at 300mm, so this isn't designed as a fast low-light lens. It's better suited to daylight, brighter outdoor conditions or situations where you can use a suitable shutter speed or support.

There's no optical image stabilisation, which is normal for a lens of this age.