One of my photos below shows a size-comparison of this lens with two other similar-but-heavier Pentax telephotos lenses in my collection. I bought my lens from Japan via Ebay, and the stated price was the total cost to me, including shipping and taxes (as always in my reviews), and it really is in mint condition as advertised. For my purposes (mostly with tripod), it's plenty fast. Sure, I'd love this lens to be faster, but the f/4 means you get a smaller, lighter 300-mm lens with still very good optics. Because the lens' optics are very sharp to begin with, I can get pretty good results with my Pentax Rear Converter-A 2X-S (which also works well with aperture priority), but that's only with a tripod. To really take advantage of the fastness (f/4, f/5.6) without degrading images with higher ISOs, a tripod is really recommended.
#Objektiv 300 mm iso#
While not really close focusing, I have gotten nice flower photos (hand-held) with good bokeh near minimum distance, but I'll increase the ISO to get more acceptable fast-exposure photos that are sharper when hand-held. But this issue is largely negated in all modern Pentax cameras because you can use aperture priority with the ring set to "A".) The focus ring turns about 270 degrees between infinity and closest focus (about 13 feet = 4 meters), which gives the opportunity for really fine focusing. (My only gripe with the aperture ring is in common with many Pentax lenses, in which the ring is really too close to the camera for easiest access.
As with my A* 200-mm f/2.8 lens (see my review of that lens), the focus and aperture rings are superb in terms of feel and movement. The chromatic aberration is not too bad - much improved over my other, older-production Pentax telephoto lenses (smc 200-mm f/2.5, smc-A 400-mm f/5.6, smc 500-mm f/4.5). I was happily surprised to see how sharp this lens is after doing my astrophotography tests this will definitely be in my arsenal of lunar/solar-eclipse lenses and will be used for long-exposure, faint-object astrophotography, as well. Sharpness: 10 Aberrations: 8 Bokeh: 8 Handling: 9 Value: 10 Camera Used: K10D, K-3 II, K-1 II Solid build and design relatively light sharp optics built-in lens hood aperture priority This lens is one stop slower than its faster A* counterpart, but it's also much more compact, only weighing 850g.Ī separate, dedicated screw-in hood was available for use in connection with a 77mm circular polarizing filter since the filter would prevent the built-in hood from being pulled out