Quick Summary
The Sigma 18 50mm f2.8 EX DC Macro Lens for Pentax Digital SLR Cameras is a standard zoom lens designed for digital cameras with APS C size sensors. It offers a constant f2.8 aperture, a macro facility with a maximum reproduction ratio of 1:3.5, and a zoom lock to help prevent creep during transportation.
Who It Is Best For
This lens will suit Pentax digital SLR owners looking for a flexible everyday zoom with a bright constant aperture. It is also a practical choice for buyers who want a lens with macro capability built in, along with features intended to support general digital photography.
What To Know Before You Buy
It is described as a standard zoom lens for APS C size sensors, so buyers should check that this suits their camera setup before ordering.
Pros: Constant f2.8 aperture, macro facility, and zoom lock add useful everyday versatility.
Cons: It is listed for Pentax digital SLR cameras, so compatibility should be checked carefully before purchase.
Common Buyer Questions
Is this lens for Pentax cameras?
Yes, it is listed for Pentax digital SLR cameras.
What kind of lens is it?
It is a standard zoom lens with an 18 50mm focal range.
Does it have a constant aperture?
Yes, it is described as having a constant f2.8 aperture.
Can it be used for close up work?
It includes a macro facility with a maximum reproduction ratio of 1:3.5.
Does it help prevent lens creep?
Yes, it includes a zoom lock for transportation.
Key Details
| Detail | What it means in use |
|---|---|
| Sigma 18 50mm f2.8 EX DC Macro Lens | A standard zoom lens with macro capability |
| Pentax digital SLR cameras | Designed for use with Pentax digital SLR camera bodies |
| APS C size sensors | Intended for cameras with APS C size sensors |
| Constant f2.8 aperture | Maintains the same aperture across the zoom range |
| SLD, ELD and aspherical elements | Included as optical design features |
| Super multi layer lens coating | Used to optimise quality for digital photography |
| Maximum reproduction ratio of 1:3.5 | Gives a defined macro capability |
| Zoom lock | Helps reduce creep during transportation |
| 2 year extended UK warranty | Warranty detail stated with the product |
Final Buying View
The Sigma 18 50mm f2.8 EX DC Macro Lens is a well specified standard zoom option for Pentax digital SLR users who want a constant f2.8 aperture and built in macro capability. If that matches your camera and shooting style, it is a straightforward lens to consider. Check compatibility with your body before ordering.
