Quick Summary
The Sigma 100 300mm f4 APO EX DG is a tele zoom lens for Canon digital and film SLR cameras. It offers a constant f4 maximum aperture, full time manual focus override, and an HSM motor for quiet high speed focusing.
Who It Is Best For
This lens is suited to photographers who want a tele zoom option for Canon SLR use and prefer a constant aperture across the zoom range. It may appeal to users who value quieter autofocus and the option to take manual control when needed.
What To Know Before You Buy
It is described as a lens for film and digital SLR cameras, so buyers should check that it suits their camera type before ordering.
Pros: Constant f4 aperture, full time manual focus override, and internal focus for a constant physical length.
Cons: Compatibility should be checked carefully to make sure it matches the intended Canon camera setup.
Common Buyer Questions
What type of lens is this?
It is a tele zoom lens.
Which cameras is it for?
It is listed for Canon digital and film SLR cameras.
Does it have manual focus control?
Yes, it includes full time manual focus override.
Is autofocus quiet?
It uses an HSM motor for quiet high speed focusing.
Does the lens length change when focusing?
No, it has internal focus for constant physical length.
Key Details
| Detail | What it means in use |
|---|---|
| 100 300mm focal range | A tele zoom range for longer reach |
| f4 constant maximum aperture | The aperture stays fixed across the zoom range |
| Full time manual focus override | You can adjust focus manually when needed |
| HSM motor | Supports quiet high speed focusing |
| Four SLD glass elements | Included for correction of chromatic aberrations |
| Maximum magnification 1:5 | Gives a stated close focus magnification level |
| Internal focus | The physical length stays constant while focusing |
| Super multi layer coating | Designed to optimise quality for digital photography |
Final Buying View
The Sigma 100 300mm f4 APO EX DG is a practical tele zoom lens for Canon digital and film SLR users who want a constant f4 aperture, manual focus override, and quiet focusing. If that combination matches your setup, it is a straightforward option to consider.
