2024年8月13日 · The Irix 15mm F2.4 is a high-performance ultra-wide prime lens designed for full-frame cameras. It is available in two versions: the basic "Firefly" (this lens) with a plastic finish, and the premium "Blackstone".

2024年8月10日 · The Irix 150 mm F2.8 Macro lens was introduced in 2018 and allows for life size (1:1) reproduction. The lens is manual focus with a focus lock, and comes with a detachable tripod mount and lens hood.

2024年6月11日 · The Irix 11mm is a rectilinear ultra-wide angle prime lens for the 24x36mm full-frame sensor. The lens is manual focus and as of its launch in September, 2017, this is the widest rectilinear (non-fisheye) lens available in the full-frame format for Pentax.

2023年8月12日 · The Irix 15mm F2.4 is a high-performance ultra-wide prime lens designed for full-frame cameras. It is available in two versions: the basic "Firefly" with a plastic finish, and the premium "Blackstone" (this lens) with a metal finish and full weather sealing.

2024年10月10日 · Catch in-focus was used and that did well as the Irix manual focus lenses have generous focus throw. Other times I have used the teleconverter, I do see the shake reduction system doesn't work as well. This time was no different. This one at f5.6. No crop mode so I think the equivalent is 150mm x 1.4 x 1.5 = 315mm on APSC Here is one with 1.7 ...

2023年7月11日 · These lenses, like the 150mm Macro, are in the Dragonfly series, which seems to be what the company has determined is the right level of build quality for its lenses. That determination is hard to argue with, as these lenses –indeed all of the Irix lenses– have a premium feel and clever features such as a focus lock mechanism.

2024年7月23日 · The Irix 21mm F1.4 is a manual focus ultra-wide-angle lens designed for full frame. The lens feature a Pentax KA mount (automatic aperture control) with no aperture ring and it is weather sealed. Focusing is internal and there is a focus lock feature.

2023年7月11日 · These lenses, like the 150mm Macro, are in the Dragonfly series, which seems to be what the company has determined is the right level of build quality for its lenses. That determination is hard to argue with, as these lenses –indeed all of the Irix lenses– have a premium feel and clever features such as a focus lock mechanism.

Most Popular Lenses Irix 15mm F2.4 Blackstone: Irix 15mm F2.4 Firefly: Irix 150mm F2.8 Macro 1:1: Irix 11mm F4 Blackstone: Irix 11mm F4 Firefly: Irix 21mm F1.4 Dragonfly: Irix 45mm F1.4 Dragonfly: Irix 30mm F1.4 Dragonfly

2024年9月16日 · I bought the Irix 45mm lens for Astrophotography, based on the very good reviews I had seen. The lens was tested by me with a Pentax K-1 using 10x20 sec frames stacked to one photo, The example is the raw output from stacking, only stretching was performed afterwards. Here are the results for the center and corners of the test photos: