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Pentax-DA 18-55mm F3.5-5.6 WR Review
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Pentax 18-55mm Dal Wr User Manual Free
Sharpness
To test for center and corner sharpness of the 18-55mm WR, we used the following chart:
Jan 28, 2008 The SMC Pentax-DA 18-55mm 1:3.5-5.6 AL, to give it its full name, is Pentax’s take on the ubiquitous ‘kit lens’ concept, designed to offer a functional lens to sell with their SLR bodies at the lowest possible price. May 20, 2009 Manufacturer description: This lens blends versatility with affordability, giving the casual photographer a broader canvas without having to carry a multitude of lenses. Plus, it’s weather-resistant to handle damp, inclement conditions. Great wide-angle capability with a standard 3X zoom range. The SMC Pentax-DA 18-55mm f/3.5-5.6 AL lens is a standard zoom lens for the Pentax K-mount.It is often sold as a kit lens with Pentax digital SLR cameras and has a 35mm equivalent focal length of 27-82.5mm. Pentax User - contains the latest Pentax news, reviews, galleries, forums and exclusive Pentax competitions - Join Pentax User Plus for exclusive deals on Pentax repairs, insurance and more.
Pentax 18-55mm Dal Wr User Manual 2017
Shown below are the center and corner crops of the test images, taken at a variety of focal lengths and apertures (click on thumbnail for actual size):
18mm
18mm | Center | Corner |
f/3.5 | ||
f/4 | ||
f/5.6 | ||
f/8 | ||
f/11 | ||
f/16 | ||
f/22 |
![Pentax 18-55mm Dal Wr User Manual Pentax 18-55mm Dal Wr User Manual](/uploads/1/2/6/0/126020231/305973833.jpg)
In the 18mm focal length, the DA 18-55mm WR is relatively sharp in the center, peaking at f/5.6-f/8 and starting to diminish at f/16 due to the effects of diffraction. For the corners, they are quite soft from wide open until f/8-f/11, when it becomes barely acceptable, before diffraction again softens the image at f/16. This lack of sharpness at the corners is most likely due to the significant distortion and field curvature of this lens at its widest focal length.
24mm
24mm | Center | Corner |
f/4 | ||
f/5.6 | ||
f/8 | ||
f/11 | ||
f/16 | ||
f/22 | ||
f/29 |
When used at 24mm, the sharpness in the center is very decent from wide open until f/22. Diffraction seems to affect the image slightly less at this focal length. While the corners are noticeably softer than the centers, they are much better than at 18mm and peak in sharpness at f/8 and f/11, with f5.6 being not too far behind. At f/29mm, the effects of diffraction become very apparent so we suggest avoiding this aperture setting.
35mm
35mm | Center | Corner |
f/4.5 | ||
f/5.6 | ||
f/8 | ||
f/11 | ||
f/16 | ||
f/22 | ||
f/32 |
At 35mm, the DA 18-55mm WR behaves slightly better than at 24mm. Center sharpness is very satisfactory until f/22, while the corners lag a bit behind, but are still very acceptable. At f/32, the softness is so prevalent that the image is hardly usable.
55mm
55mm | Center | Corner |
f/5.6 | ||
f/8 | ||
f/11 | ||
f/16 | ||
f/22 | ||
f/32 | ||
f/40 |
At the top of its focal length range, we notice that the DA 18-55mm WR is a bit soft at wide open (f/5.6). Sharpness peaks at f/8 and f/11, but then it softens again at f/16 due to diffraction. At f/32 and smaller, it softens significantly, rendering the images unusable.
Pentax 18-55mm Dal Wr User Manual Review
Verdict
With regards to overall sharpness, the Pentax SMC DA 18-55mm f/3.5-5.6 AL WR does quite well given that it's the cheapest lens in the Pentax zoom lineup. It does show noticeable weaknesses in some areas, as to be expected however. At 18mm, the corners are significantly soft at most apertures, while at 55mm, the wide-open performance leaves a lot to be desired. The focal length sweet spot of this lens happens to be around 24mm to 35mm, where performance was the best. In conclusion, we consider that sharpness is obviously not a strength of this lens, but the lens will certainly get the job done for many users.
Pentax 18-55mm Dal Wr User Manual 2016
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