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Forum: Lens Clubs
02-07-2024, 03:13 PM
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Forum: Mini-Challenges, Games, and Photo Stories
02-08-2024, 08:43 AM
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I was late to the party this year, caught this bit of color holding on in late November. Liquidambar styraciflua (or Sweetgum to use one of its common names in the US):
 November Eno (2) by Jeff, on Flickr
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Forum: Pentax Q
02-07-2024, 02:59 PM
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Forum: Lens Clubs
12-19-2023, 12:05 PM
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Forum: Lens Clubs
12-24-2023, 07:00 AM
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Forum: Lens Clubs
01-17-2018, 10:55 AM
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Slight crop from the FA 645 75/2.8:
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Forum: Lens Clubs
11-23-2017, 03:00 PM
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Here's the Mirex adapter; I don't have a K-1 (quite) yet so just the gear shots for now, with a K-5 standing in for the K-1:
Lens-facing side on left. The spring puzzled me for a bit; it's to catch the diaphragm actuator and stop down the lens (unlike with K-mount lenses, the Pentax 645 actuator defaults to open). The bronze-colored flange at left is the lens release lever.
Camera-facing side on right. The shift mechanism is at top; press on the lever and slide the lens or camera to the side. The toothed flanges on either side are for rotating the lens to change the tilt and shift axes. They are a challenge to operate when the adapter is on the camera and a lens is attached.
Side view showing the tilt dovetail mechanism. On the other side there's a set screw to lock down the tilt, and another screw for setting the tension. The set screw gets in the way of rotating the adapter (it can hit the grip and/or the flash/prism hump, depending on the camera) so it's good there's the tension adjustment; you don't really need the set screw. Note the tripod foot, with Arca/Swiss-compatible dovetail.
FA 75 adapted to the K-5, fully tilted (top) and fully tilted and shifted (bottom)
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Forum: Lens Clubs
12-19-2023, 12:02 PM
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 Kew (2) by Jeff, on Flickr
SMC Pentax-D FA 70-210mm F4 ED
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Forum: Mini-Challenges, Games, and Photo Stories
12-19-2023, 12:16 PM
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3-shot shift pano with the Laowa 20mm:
 Waterways by Jeff, on Flickr
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Forum: Lens Clubs
04-13-2022, 06:31 AM
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 Trust me by Jeff, on Flickr
American Alligator
K-1, DA* 300, HD 1.4x TC |
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Forum: Lens Clubs
02-21-2022, 06:50 AM
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Forum: Lens Clubs
04-18-2022, 04:40 AM
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Forum: Mini-Challenges, Games, and Photo Stories
10-25-2020, 05:00 AM
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Another US national park road, this one starting within the boundaries of the Blue Ridge Parkway and finishing in Great Smoky Mountains NP.
 The coloured door of time by Jeff, on Flickr
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Forum: Pentax SLR Lens Discussion
07-29-2022, 06:22 AM
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Picked up a copy as soon as it was available. My first test was on my infrared-converted K-5, and the results were somewhat disappointing. Usable, but mushy edges and corners, especially when shifted. However it is quite sharp across the frame on my K-1. Hardly surprising that the designers were more concerned with the visible spectrum than infrared!
 Light in the forest (52) by Jeff, on Flickr
3-shot shift panorama, Laowa 20/4 Shift, 590nm IR-converted Pentax K-5
 Rhododendrons in the mist by Jeff, on Flickr
3-shot shift panorama, Laowa 20/4 Shift, Pentax K-1 |
