Surprising how few comments on this. On the one hand this is understandable, because this perspective is not young and do PENTAX manufactures more. On the other hand, it is surprising because despite its flaws, it is a bargain at the price which is trading even new models. Let's start with the defects. Yes, it is an objective that has a lot of chromatic aberration, especially at full aperture. That said, if you have a recent K reflex, activate the automatic correction in the parameters greatly limits the impact of this concern. Yes, 16mm barrel distortion is important. Same answer, auto correction of the housing limits the breaks, but at the cost of a slight cropping of the image. If you can handle editing software, nothing too serious. J adds in passing, for those interested that the SILKYPIX software provided with your camera can handle these problems and offers many possibilities, provided you take the time to tame using commands ... (more complicated It's hard to imagine). But back on topic. Other singularities of this rock, the most amazing is the inversion of the zoom control. Clearly, the more you turn the ring, the more you widen the field! Optical retracted = 45mm, 16mm = optical deployed. At first it is very confusing and many hate this goal for this reason. Even without the lens hood, you will not avoid the shadows flash range at wide angle.
To be continued .... Keyboard failure ..... :-(
So new ones. Early last set ...
Of course, f / 4 constant, that person no longer dream today. Probably.
But this goal has many other assets. Primarily, his formidable sharpness and color quality unmatched by the competition. I mounted on my successive housings of the K5IIs K30 through K50, never worries FRONT / BACK focus (follow my eyes ...) and that improve performance of devices in device. It's the ideal lens for everyday picture without sacrificing image quality, unless you really believe that a 18-200mm offers the answer to "why I did not buy a bridge?". .........
You are not convinced? So take a ride on the DXO LABS website which published two interesting comparison on the best targets for your K50 and K3. The ancestor is always on the podium in the category of zooms. You will say, testing and comparisons, it's not like in real life ... True, except that this objective, SI!
