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Pentax smc DFA 50mm f/2.8 Macro Lens
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- Optimised for use with digital cameras
- Compatible with PENTAX SLR film cameras
- Magnification to 1:1
- Quick Shift Focus System
- Corresponds to a focal length of approx. 75mm with the Pentax digital cameras
- Built-in focus-clamp mechanism to fix focus at any distance
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This item Pentax smc DFA 50mm f/2.8 Macro Lens
|Shipping||£2.99||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Sold By||Digital Depot||Amazon.co.uk||Amazon.co.uk||Amazon.co.uk||Amazon.co.uk||Amazon.co.uk|
|Item Dimensions||10.41 x 15.75 x 10.41 cm||6.5 x 8.1 x 6.5 cm||7.15 x 7.15 x 9.7 cm||7.7 x 12.2 x 7.7 cm||6.3 x 4.5 x 6.3 cm||9.5 x 15.09 x 9.7 cm|
|Item Weight||265 grams||340 grams||405 grams||0.55 kg||124 grams||454 grams|
|Max Focal Length||50 mm||100 mm||90 mm||300 mm||35 mm||300|
|Min Focal Length||50 mm||100 mm||90 mm||70 mm||35 mm||55|
Size: 50mm | Style: Macro Lens
PENTAX smc D FA lenses meet the most modern requirements of lens technology. Thusly, they represent an important link between analogue and digital SLR technology. The smc D FA series lenses are optimised for the requirements of digital recording technology are also equally suitably for PENTAX SLR analogue.In addition to a superb focusing system, smc D FA series lenses are equipped with an aperture ring so that the aperture can be set directly on the lens. Macro lenses within this focal length range are particularly suitable for reproductions and photos of particularly small articles that can be arranged at leisure and with care.
Pentax smc DFA 50mm f/2.8 Macro Lens
From the manufacturer
smc PENTAX-D FA MACRO 50 mm F2.8 - Overview
The smc PENTAX-D FA MACRO 50 mm F2.8 is designed for digital and film SLR cameras. It utilises curvature and positioning of optical elements to virtually eliminate flare and ghosting for clear, high-quality images particularly important to digital photography. This versatile lens can also be used as a standard lens. Achieving life-size (1:1) magnification it features our acclaimed SMC multi-layer coating to lower surface reflection, reduce ultraviolet rays and deliver clear, high-contrast images.
|PENTAX-FA 31mm||PENTAX-FA 35mm F2 AL||PENTAX-FA 43mm F1.9||PENTAX-FA 77mm F1.8||D FA MACRO 50mm F2.8||D-FA 100mm F2.8 Macro WR|
|Minimum Focusing Distance||0.300cm||0.300cm||0.450cm||0.700mm||0.195cm||0.303cm|
|Quick Shift Focus||N||N||N||N||Y||Y|
Top customer reviews
It also has a far stiffer zoom ring than the standard lens. This takes some getting used to, but it helps prevent zoom creep when carried lens-downwards.
On the plus side the lens has a superb long range room. About as long a zoom as you can sensibly use hand-held without using rather silly high ISO settings.
As a Pentax DA lens this one has on-board operating information that works with most Pentax DSLR bodies to automatically correct the image distortion that all lenses exhibit. Zoom lenses are worse than most and super-zooms are the most extreme.. This lens works well with the geometric auto-correction settings in my K5. I haven't tried the auto-correction chromatic settings in earnest yet.
It is worth noting that the shots taken without auto-correction are saved much faster to the memory card. If you need to take dozens of action shots and want to guarantee no pauses when taking them then it is worth knowing that this lens is included in the post-processing correction options in Adobe's CS packages.
There have already been many reviews of this lens on-line. In it's Pentax branded form and in its Canon and Nikon mount variants under the Tamron brand. I won't repeat them here. Just a word or two of advice...
1) Stop down to F11 or higher for the sharpest shots, especially at wide angles.
2) When zooming, come slightly back from maximum zoom for the sharpest shots at long range.
The DA21 is small and the clever lens hood hardly adds to its length. On a K-7 it looks positively diminutive. As with all the limiteds, the design and build exude that certain satisfying precision feel. The lens hood design is unconventional but effective. The lens cap is a solid piece of felt lined aluminium, in keeping with the look and feel of the lens, but a bit impracticable and probably expensive to replace. Fortunately a standard old Pentax slip-on 51mm plastic lens cap fits perfectly.
The 21mm focal length is just right on an APS sensor camera, such as my K-7. It is just wide enough to make a difference but not too wide to give that somewhat boring stretched effect of ultra-wides. Autofocus is accurate, quiet and quick - there isn't a great deal of mass to spin around with this lens.
Optically, this lens is sharp enough to allow some cropping without a great loss of quality. It is quite sharp even wide open and gets better stopped down. The sweet spot seems to be somewhere between f/4 and f/5.6. There is a fair amount of barrel distortion and some CA, both easily correctable in post-processing. Contrast and colour rendering are excellent. Flare resistance is good, although when shooting into the sun at a certain orientation it is possible to provoke a 'green blob' flare, probably a sensor reflection.
I can see this lens staying on my camera a lot of the time. It is inconspicuous enough for street photography and sharp and wide enough for my landscape and architectural shots.
It is early days yet however I have a good feeling about this lens. Fast af, sharp, high contrast well done Pentax.
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It's a little soft, but still very usable even for commercial work.Read more