[WillH]

Excanonfd, hummm! Well, if it was dust then I suppose you would be correct. Tis not dust. It's a small insect. I never mentioned dust. What's the lens worth? It's new! I take very good care of my lenses. Besides I like the lens. I know the F stop isn't fast nor does it carry the SP designation, I like it! Never was much of a lens snob. I like the pictures the lens produces and don't really care what the F stop is. So, if I want to put a few bucks into having the insect cleaned it's my money to waste - I earned it!

---

Last edited by WillH; 08-20-2012 at 06:31 PM.

[excanonfd]

Excanonfd, hummm! Well, if it was dust then I suppose you would be correct. Tis not dust. It's a small insect. I never mentioned dust. What's lenses worth? It's new! I take very good care of my lenses. Besides I like the lens. I know the F stop isn't fast nor does it carry the SP designation, I like it! Never was much of a lens snob. I like the pictures the lens produces and don't really care what the F stop is. So, if I want to put a few bucks into having the insect cleaned it's my money to waste - I earn it!

Hmm, I seem to have pressed someone's hackle raising nerve somewhere... Adaptall-2 22A, 40A or an SP 27A, 28A, range in price between 20 to 60 dollars on the used market. There may have been other more recent sale but in the "Sold" section of this forums' Marketplace shows an SP 28A was sold for $50.00 with a PK/M adapter. The best price I've seen for MF lens overhaul can be found here: Repair Resources & Rates Ralph Innes charges 72.00 plus the return shipping to repair a zoom lens. I have merely expressed my opinion that it simply isn't worth paying two or three times the price of the lens to have it repaired, especially since the bug has no bearing on the IQ.

Lens snobbery, what snob appeal do you find in farting around with 20+ years old legacy lenses?

[WillH]

Hmm, I seem to have pressed someone's hackle raising nerve somewhere... I have merely expressed my opinion that it simply isn't worth paying two or three times the price of the lens to have it repaired, especially since the bug has no bearing on the IQ.........

Lens snobbery, what snob appeal do you find in farting around with 20+ years old legacy lenses?

I ask a simple honest question and what I got was a condescending lecture. You can certainly stuff your condescending attitude, and opinion on lens value, where the monkey hides it's nuts.

Anyhoo, it's done. $60.00 in and out! Seems your not the EXSPURT you think you are!

[Stone G.]

- - - -


Nice shot of the sailing ship, Stone G! How does the O-GPS1 work with the K-5 for astrophoto like the one you've posted, don't you need some sort of tracking device to prevent circular star trails from occurring?

Thank you excanonfd. The camera firmware and sensor (SR) actuators constitute the tracking mechanism: Based upon information from the O-GPS1 on timing, heading and geographical coordinates, the movement of the sensor can be computed and controlled by the camera firmware so as to keep images of stars in a given direction and altitude at a specific time in the same place on the sensor for quite some time - on a good day up to about one minute with a 300mm lens.

And Adaptall-2 lenses such as the 54B used here plus the SP 350mm f/5.6 (06B), 200mm f/3.5 (04B) and even the zoom SP 35-80mm f/2.8-3.8 (01A) are just great for astrophotography!

Now, if only I had the SP 180mm f/2.5, one of the SP 300mm f/2.8 and the SP 400mm f/4...........

[chalkandtalk]

@WillH

I like those shots on the previous page taken with the 03B. I have just acquired this lens and love using it.

[excanonfd]

Thank you excanonfd. The camera firmware and sensor (SR) actuators constitute the tracking mechanism: Based upon information from the O-GPS1 on timing, heading and geographical coordinates, the movement of the sensor can be computed and controlled by the camera firmware so as to keep images of stars in a given direction and altitude at a specific time in the same place on the sensor for quite some time - on a good day up to about one minute with a 300mm lens.

And Adaptall-2 lenses such as the 54B used here plus the SP 350mm f/5.6 (06B), 200mm f/3.5 (04B) and even the zoom SP 35-80mm f/2.8-3.8 (01A) are just great for astrophotography!

Now, if only I had the SP 180mm f/2.5, one of the SP 300mm f/2.8 and the SP 400mm f/4...........

What a quick and easy way to get into astrophotography! Another good reason to upgrade to a K-5 besides the quirky metering on my K20D being so distracting - intend to do so soon after K-5 replacement become widely available, hopefully I can find one around 600.00 range. Thanks for this information.

You just have to keep looking, it took me three years of actively bidding on eBay and making offers on the Marketplace before I finally acquired the 63B at a price that I could afford. I was all but ready to go to plan B; buy a Nikkor 180/2.8 ED AIS lens and convert it to PK mount before I lucked out on eBay.

[pacerr]

K10 @ ISO 400 with the SP 300/2.8 (360B) plus the Pz-AF 1.4x TC. Cropped by about 65%.

I can detect no difference between the results with the Pz-AF 1.4x or the Tamron 140F TCs -- the Pz-AF is certainly more convenient to use and more versatile since it can be used with other PK lenses as well.

H2

---

Last edited by pacerr; 08-21-2012 at 11:44 AM.

[excanonfd]

K10 @ ISO 400 with the SP 300/2.8 (360B) plus the Pz-AF 1.4x TC. Cropped by about 65%.

I can detect no difference between the results with the Pz-AF 1.4x or the Tamron 140F TCs -- the Pz-AF is certainly more convenient to use and more versatile since it can be used with other PK lenses as well.

H2

Another nice shot of a deer from your backyard, pacerr? Doesn't the PZ-AF converter play havoc with aperture reading on A type lenses, my 2x TC shows maximum aperture as f1.2 with the 60B. Has anyone figured out a way to make the combination report at least the lens' maximum aperture?

[pacerr]

Doesn't the PZ-AF converter play havoc with aperture reading on A type lenses, my 2x TC shows maximum aperture as f1.2 with the 60B. Has anyone figured out a way to make the combination report at least the lens' maximum aperture?

I have one Pz-AF 2x and two Pz-AF 1.4 converters and half a dozen PK - PK/A adapters -- all operate "normally" with both Pentax and Tamron lenses on *istDS, K100DS, K200D and K10D and older film bodies. Four of the five PK/A adapters work as advertised. (One older one doesn't report less than f 4.0 and I've CLA'ed 'em as best I could).

Having said that, I have to admit I really don't care so long as the lens sets a reliable and consistent aperture relative to the exposure value I select regardless of whether that's through in-camera AE, manual stop-down mode or manual via a Pentax Spotmeter metering. I simply evaluate the first shots (pre-shots if possible) and adjust as necessary. (Smiling as I go while remembering the days when mistakes weren't discovered until the film was wet.)

Regardless of the mode, I normally select aperture out of old habit unless shutter speed is a priority. From use, I know for instance that the K10/360B combination over exposes spot metering by 1 1/2 - 2 stops and compensate accordingly. Why that is? I donno; it's pairing issues I suppose. I could figure it out and "place blame where due" but it's simply easier to take the path of least resistance, acknowledge the peculiarities and forge ahead with chimping as a useful tool.

Logic and experience tells me it's a loosing battle to expect absolute standards from 30+ year old analog, electro-mechanical adapters. Repeatability is comfort enough in this case. Life's easier this way and lazy, thoughtless failures keep one humble and disinclined to bitch about the gear.

H2

[velocina]

From the rear row to the front, from right to left:

200-500mm/f.5.6 (31A)
400mm/f.4 (65B)
300mm/f.2.8 (360B)
300mm/f5.6 (54B)
35-210mm/f.3.5-4.2 (26A)
80-200mm/f.2.8 (30A)
70-210mm/f3.5 (19AH)
70-210mm/f.3.5-4 (52A)
70-150mm/f.2.8 (51A) Soft Focus
60-300mm/f.3.6-5.4 (23A)
180mm/f.2.5 (63B)
28-105mm/f.2.8 (176A) LD-Aspherical-(IF)
35-80mm /f.2.8-3.8 (01A)
35-105mm/f.2.8 (65A) Aspherical
28-135mm/f.4-4.5 (28A)
28-80mm /f.3.5-4.2 (27A)
24-48mm /f.3.5-3.8 (13A)
17mm/f.3.5 (51B)
90mm/f.2.8 (72B) Macro 1:1
350mm/f.5.6 (06B)
2X TC (200F)
2X TC (01F)
1.4X TC (140F)
500mm/f.8 (55B)

All Adaptall-2 SP lenses.

[pacerr]

Hang in there, Luca. You'll find that 63B some day.

H2

[Chex]

With my 01BB 24mm f2.5 (on my D800)

[velocina]

Hang in there, Luca. You'll find that 63B some day.

H2

Oooops !
I've forgotten to list the 63B ! It is the shortest one with the grren ring and the gold plate ( second row from rear, the last from right to left ).
I've just correct the list's mismatch.

Here you another bunch of lenses:

From the rear row to the front, from right to left:

70-350mm/f.4.5 (05A)
75-250mm/f.3.8-4.5 (104A)
80-210mm/f.3.8-4 (103A)
35-135mm/f.3.5-4.2 (22A)
28-200mm/f.3.8-5.6 (71A) Aspherical and A9FB(2-1m) adaptor
28-200mm/f.3.8-5.6 (171A) LD-Aspherical-(IF)
70-210mm/f.4 (47A) Autofocus
200mm/f.3.5 (04B)
24mm/f.2.5 (01B) (no hood, grrr!)
28mm/f.2.5 (02B)
135mm/f.2.5 (03B)
300mm/f.5.6 (CT300) (old)

All Adaptall-2 standard (no SP) lenses, except the last (no Adaptall-2)

[StephenHampshire]

Been piddling around with my CT-105 105mm f2.5 original Adaptall. I used this with a Canon FD mount for years (since 1978 or so IIRC Currently only got a K adaptor, so fully manual lens. A bit low contrast wide open, I might need a better hood, but nice and sharp and a compact lens.



Dragon | Flickr - Photo Sharing!

[dadipentak]

For you eyes only..

Wow!

Also for chex & stephen's samples.