New Member Registered: April, 2016 Posts: 1 | | Review Date: January 14, 2024 | Recommended | Price: $250,000.00
| Rating: 9 |
| Pros: | there is no other medium format 1000 mm lens, stunning | | Cons: | difficult to set up, sturdy tripod needed and additional measures against vibrations | | Sharpness: 9
Aberrations: 9
Bokeh: 9
Handling: 7
Value: 9
Camera Used: Pentax 67
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Got it from Japan "Near Mint" for 2500 USD. I use it for panorama photographs. Fortunately, it came with the rear cap, so the built-in filters were not greasy or dusty. First photographs taken in dry weather conditions gave beautiful results, sharp at the edges, crispy details even at a distance of 5-7 km. But there was haze on the mirror, so I asked around for specialists who could clean that lens to achieve additional sharpness. My authorized Pentax repair guy told me, that he and probably nobody in Europe can dismantle this lens for repair, because you need an optical bank to reassemble it. He even asked his colleagues in Japan, but nobody wanted to touch it. Finally I found a telescope specialist in Southwest Germany, who promised to take a look at it. Turned out that the front lense was glued into the tubus, so it was very time-consuming and complicated to dismantle it. But in the end the telescope guy arranged it in a way, that now I can easily take it apart myself and clean it in the inside if necessary. Now I achieve really stunning results with this lens, and I am happy that I bought it and never gave up to get it in shape again.
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Site Supporter Registered: December, 2006 Location: Tucson Posts: 90
1 user found this helpful
| | Review Date: August 7, 2020 | Not Recommended
| Rating: 1 |
| Pros: | It is a collector's item. Long reach, and not all that long, you would think this lens would be awesome. | | Cons: | Very difficult to use. | |
This is not a full review. But I noticed a listing on eBay, and I thought I ought to share what I know. I own this lens. But my lens has been converted to a K-mount. This lens is so difficult to use I have a hard time giving a rating on IQ.
I was so excited to take this lens birding. For some reason I thought that hand-holding this lens, or even with a bean bag was a good idea. Wrong. This lens has reach, reach, reach. But you want your sturdiest support. I struck out taking a picture on my first outing. It was just too difficult to operate.
Today I put it on my carbon fiber tripod on top of my Wembly which I use for most of my telephoto usage. I easily use a 300mm or a 400mm lens with this combination with a number of cameras. I wished that I had brought my geared head. And on the next outing I will. I did achieve some reasonably good photos of the insulator on top of my nearest telephone pole I use to test telephotos. Well, most of the insulator was in my view finder. The insulator more than filled the frame. I also pointed the lens toward my nearest mountain range. I honestly couldn't really see what I was shooting, but even I can set a lens to infinity focus. I am impressed with the reach. But next time I will use a more stable set-up. Though at these distances air-quality may be a bigger factor than my tripod.
There is no aperture. Exposure is achieved with ND filters that you rotate into place. NB: this ƒ11 lens is very dark to look through in the first place. I know my eyes are getting old, but it is very hard to see. I couldn't see anything at the through the ND filters. I suggest that you just use the thing open and adjust your exposure with ISO.
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Pentaxian Registered: February, 2009 Location: Arizona Posts: 1,272
7 users found this helpful
| | Review Date: May 22, 2011 | Recommended
| Rating: N/A |
| Pros: | Small size for a long focus lens | | Cons: | No diaphragm | |
This post is a review for informational purposes, as I don't own this lens. The 1000mm Reflex-Takumar is probably the rarest lens for the Pentax 67 system. There is also very little information about it. This mirror lens has a 7 inch diameter and weighs just slightly more than the 600mm f/4 Takumar; not bad for a 1 meter focal length lens. As one would expect, it is for use on the outer bay of the P67 lens mount. There is no diaphragm, which is typical for mirror lenses. It is set at f/8 which is determined by its optical design. I have a background in optics and I must say that I have never seen a design like this lens. It is obviously a Maksutov Cassegrain from the telescope world, however it does not resemble any known type in that category. Instead of having a meniscus up front as the first element, it has a weak positive element, followed by a meniscus. The slightly converging light beam reflects off of a concave mirror (probably spherical) and then to the secondary mirror that is attached to the meniscus. From there, light is passed through a hole in the primary mirror and through the rear lens group. There are two mirrors and seven refracting elements. Focusing is done via large knobs, just like the 600 Takumar. This lens comes with built-in ND, Skylight, Y2 and R2 filters that can be rotated into place. Exposure can only be changed by the ND filter and shutter speed, since this lens has no diaphragm. Because of this, DOF changes are impossible. This lens is best suited for narrow focus subjects like birds or mammals at distance, although certain near infinity shots could be had as well. Since Pentax has stopped producing these lenses, I have only seen one for sale on the used market. The price of this lens when new was $5900. US.
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