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Forum: Pentax News and Rumors 10-31-2017, 11:49 PM  
HD Pentax-DA★ 11-18mm f/2.8
Posted By Douglas_of_Sweden
Replies: 474
Views: 39,071
The FA28/2.8 is certainly small, fits in my pocket. I think the FA20 is about the same.
Forum: Pentax News and Rumors 10-31-2017, 02:56 PM  
HD Pentax-DA★ 11-18mm f/2.8
Posted By Douglas_of_Sweden
Replies: 474
Views: 39,071
Yes, both of them designed by Jun Hirokawa. To my knowĺedge the F17-28 was the first fisheye zoom ever, even though Canon and Nikon have since released their own fisheye zooms. The new fisheye zoom I suppose Masakazu Saori will design (he is currently the leading lens designer at Pentax, among other lenses he made the DA*16-50/2.8, DA*50-135/2.8, DA21ltd, DA70ltd and DFA*70-200/2.8), unless they just update the F17-28 with new coating etc. What I"ve learned as an owner of both the F17-28 and DA10-17 is that the zoom function makes the fisheye so much more usefull and easier to use.
Forum: Pentax News and Rumors 10-30-2017, 04:45 PM  
HD Pentax-DA★ 11-18mm f/2.8
Posted By Douglas_of_Sweden
Replies: 474
Views: 39,071
There is no such thing as "de-fishing" a fish eye. The DA fish-eye zoom is a completely different beast. It's not rectlinear and it is much slower. You can't turn it into a rectlinear f2.8 zoom with some simple "de-fish-eye" process. The lens designs will be different from the first array.
Forum: Pentax SLR Lens Discussion 10-11-2017, 05:50 PM  
What's the best Pentax prime?
Posted By Douglas_of_Sweden
Replies: 171
Views: 7,614
No, no....that's the wrong answer! You buy them all!
Forum: General Talk 10-11-2017, 12:23 PM  
Your latest acquisition
Posted By Douglas_of_Sweden
Replies: 10,955
Views: 746,695
Don't you see? There is only one 35mm Pentax with strap lugs like that! One could argue that if I sell the adapter I'll go plus/minus zero and I will have that awfull Tokina preset tele for free...and one fully working Pentax LX!
Forum: General Talk 10-11-2017, 11:25 AM  
Your latest acquisition
Posted By Douglas_of_Sweden
Replies: 10,955
Views: 746,695
Someone heard that you could make money selling old manual glass (it's a Tele-Tokina 300/5.5 in m42 mount) to dudes using them on digital cameras. Film cameras on the other hand is worthless, so he threw in the old film camera that was stuck to the lens for free. In that way he didn't had to figure out how to remove it. Mighty clever of him!

Now that camera looked familiar...



The original m42-K-mount adapter that, unknown to the seller, kept the lens mounted to that camera itself would have been enough to motivate what I payed. The camera turned out to just need a little cleaning. Even the light seels and the mirror bumber was OK and didn't need replacement. First film goes through it tomorrow.
Forum: Pentax SLR Lens Discussion 10-11-2017, 09:35 AM  
What's the best Pentax prime?
Posted By Douglas_of_Sweden
Replies: 171
Views: 7,614
And unlike the 200mm macros and the 135/1.8 the F/FA/DFA 50mm macro is common and inexpensive. And it belongs on the top 10 list. Underpriced. Everyone should get one!
Forum: Pentax SLR Lens Discussion 10-10-2017, 02:05 PM  
What's the best Pentax prime?
Posted By Douglas_of_Sweden
Replies: 171
Views: 7,614
The problem with lens reviews like the one on Pentax Forum is that most users only have experience of a small number of lenses. And people tend to like their gear, sometimes with passion. This causes a lot of 7th, 8ths and 9ths given to very average lenses that should have been given a 4, 5 or 6. So there is a lot of inflation in that rating system.

I have a little bit over 100 Pentax/Takumar prime lenses. Among those the best lense in my oppinion is the SMC Pentax A*135mm f1.8. The problem with its Pentax rating is that it is very rare, and therefore there are few reviews, so one very negative review is able to take down its average rating (it gets eleven 10ths, one 9th and one 3rd! That 3 value takes down the average from 9.92 to 9.38. In my oppinion, Adam should remove that review!). That review is either by someone who had a broken lens or did not undestand how razor thin the DOF is at 135mm f1.8 and hence failed to focus. His rating is enough to bring down the lense from the absolute top of average lens ratings. That is another weakness of that sort of rating system. Exceptional, but very rare lenses, becomes voulnerable to outlayer ratings. But I have this lens, and among its many fantastic properties, it is sharper wide open than any of the FA*-lenses, the A*85, FA*300, or any of the 35, 50 or 100mm macro lenses of Pentax that I have compared it with.

It is possible that the both A* and FA* 200mm macros might beat the A*135. But I don't have those lenses....still on the shopping list.

Neither do I have the 400 or 300/2.8s on your list. But the F*300/4.5 is optically the same as the FA*300/4.5, which I have, and that's also a very good lense that might belong in the top 10. The same applies to the DA35ltd macro, one of the best APS-C designs of Pentax. The K30/2.8 is a very nice lense, but it don't belong in the top 10. It has for some reason a very exclusive reputation, which elevates it above its actual (already good) quality.

A poll like tha one Adam made that elevated the FA77ltd, is in its nature partly a popularity competition. Lenses like the 200mm macros and the A*135 are too rare to show up there. It requires a lens that is both very goid (but not necessarily the best) and which sold well. That description fits the FA77ltd.

Fotnote: The FA77ltd, which didn't make it into the top 10 average ratings, uses the same optical design as the A*85, which made it into the top 10. They just tweaked focal length and speed slightly, which isn't a big loss, since the A*85/1.4 is soft wide open.

---------- Post added 10-10-17 at 11:50 PM ----------




7.7! :eek: Well, there you have it. PFs lens reviews suffers as badly from inflation as I suffer from LBA. :fedup: All these users who give their kit zoom 8 or 9 in rating... And equally bad: everyone who gives a 9 or 10 to the first full metall manual focus lens they hold, even if it's an average good mass produced 28, 50 or 135mm from the 70s. That's what gives us review ratings that appears to contradict themselves.
Forum: Pentax News and Rumors 05-02-2017, 07:22 PM  
For each Pentaxian buying K-1 another Nikon/Canon shooter jumped ship to Pentax
Posted By Douglas_of_Sweden
Replies: 996
Views: 65,232
Pentax forum haven't changed. Here is an interview that reveal that K-1 sell very well to old and new users. In addition we get a promiss of more medium format lenses. What's the forums respons? Whinings about the limited video functions. It would be OK if it was part of the thread, but it ends up dominating it!

Bonus: Evidence of Pentax long commitment to video...
Forum: Troubleshooting and Beginner Help 11-15-2016, 06:46 PM  
Macro lens and rear converter questions
Posted By Douglas_of_Sweden
Replies: 8
Views: 673
The problem with the HD DA 1.4x is that it is for APS-C. From what I understand it vignets on FF, which makes it meaningless for me.
Audiobomber... you must have a bad copy of the A 2x. Perhaps someone dropped it and missallinged the lens elements. Mine is superb. Together with the A* 135/1.8 it gives a 270/3.6 with minimal quality loss. Takes very serious pixel peeping to see any degradation. The A* 85/1.4 gives a similarly nice 170/2.8. Bad luck that you got a lemon.
Forum: Troubleshooting and Beginner Help 11-12-2016, 08:03 AM  
Macro lens and rear converter questions
Posted By Douglas_of_Sweden
Replies: 8
Views: 673
You can use any reae converter with K mount behind any lens with K mount. How well it works fepends on the optical quality of both lens and converter. Optically the SMC Pentax-A 1.4x and 2x are superior. Bot they lack autofocus. They are full frame though. The new HD Pentax 1.4x is one of few that give autofocus both with screwdrive and in-lense motors. And the only to help the camera to register the right focal length (which influene SR). It is however not full frame, so dependent on your lens and if you use a Pentax K-1 it may vignete if you shoot on FF.

For macro work, the trick with adding a converter behind a (macro lens) is that it brings you closer to the subject, without increasing the minima focus distance. It always remains the same. But you loose optical resolution. If the converter is bad...mediocre, you might get better results just by shooting without the converter and crop the image. You also loose speed (max apperture opening).

For 1:1 true macro lenses like Pentax 50mm and 100mm macro lenses, a converter bring you beyond 1:1. That is you reproduce objects on the sensor larger than real life. There are formulas for this. If I remember correctly, a 2x converter behind a 50mm f2.8 1:1 macro gives you a 100mm f5.6 2:1 "micro" lens.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 11-07-2016, 05:18 PM  
Nikon cutting 10% of its work force
Posted By Douglas_of_Sweden
Replies: 17
Views: 1,056
Oh...Nikon is dooomed!
Forum: Pentax Film SLR Discussion 11-07-2016, 04:57 PM  
Gear P0rn - post it if you got it.
Posted By Douglas_of_Sweden
Replies: 5,257
Views: 566,995
The bellows and slide copier is new. The rest I've had a couple of years. Plan is to mount the K-1 on the bellows and use pixel-shift to scan my 6x7, 6x6 and 4.5x6 slides and negatives to digital.
Forum: Pentax Film SLR Discussion 11-07-2016, 03:03 PM  
Gear P0rn - post it if you got it.
Posted By Douglas_of_Sweden
Replies: 5,257
Views: 566,995
Forum: Pentax Medium Format 11-07-2016, 02:49 PM  
using the K-1 with pixelshift to "scan" medium format negatives/sludes, anyone??
Posted By Douglas_of_Sweden
Replies: 14
Views: 1,827


It's the SMC macro-Takumar 135mm f4 in the picture. We will see what works best eventually to transfer 6x7cm neagatives/slides to a 24x36mm sensor instead of another 6x7cm neagative. A shorter focal length might be better.

The small device in front of the bellows is a Pentax67-K mount adapter.
Forum: Pentax SLR Lens Discussion 11-04-2016, 05:20 AM  
FAJ 18-35 F4-5.6 --- vs --- DA 18-55 F3.5-5.6
Posted By Douglas_of_Sweden
Replies: 19
Views: 1,175
DOF only depends on focal length, apperture and sensor size. If these are equal, two different lenses have the same DOF.
What may differ is the character of the OOF areas, so called bokeh.
Forum: Welcomes and Introductions 11-04-2016, 05:09 AM  
Hello Fellow Pentaxians!
Posted By Douglas_of_Sweden
Replies: 9
Views: 464
I've used the K-3 (and K-5 and K-7) quite a lot for stage shooting, often at low light.
Some of my favorite lenses when wanting to reach up on the stage and isolate an artist in a shot are the DA70ltd as well as the DA*50-135. But there is one used lens I must recommend: the FA135/2.8. Sharp, also at f2.8, and very fast autofocus. It is often too long for portraits (on an APS-C sensor) and too short for sports, but for stage shooting it's often perfect. Pentax should make a DFA version of this lens.
Forum: Pentax SLR Lens Discussion 10-28-2016, 11:01 PM  
Lens advice: help me become a fellow Pentaxian
Posted By Douglas_of_Sweden
Replies: 44
Views: 2,839
OK...you consider screw drive too noicy. You consider buying manual focus.

I'm not against manual focus...have some myself. But you do know you can turn of the autofocus, right?
So you can buy for example the DA50/1.8 (which is extremely much lens for the money) and focus manually when you want to be in stealth mode.

What's more...no I don't think the DA18-135 is enough for birds, except ostriches, turkeys etc. Any version of the DA55-300 will get you much closer to that. That is a very good lens for a consumer zoom in that range. Then you are likely to find out that 300mm isn't enough for a lot of birding either.
Forum: Pentax SLR Lens Discussion 10-28-2016, 10:39 PM  
SMC Pentax-A 1:1.4 50mm lens marked "DEMO" -- Rare???
Posted By Douglas_of_Sweden
Replies: 18
Views: 1,273
Everything is not what it seams. The A50/1.4 is just metal, glass and a bit of rubber. So are most of the A serie except a few late consumer zooms.
Forum: Pentax Film SLR Discussion 10-28-2016, 06:01 PM  
Gear P0rn - post it if you got it.
Posted By Douglas_of_Sweden
Replies: 5,257
Views: 566,995
How to get started on a Pentax 6x7 set up:

1) Buy a pair of dumbbells. Say 5kg each at least.
2) Alterate training arm strength with looking for a Pentax 67 with random lens (or body only). Have patience and you will be able to get a working copy for <150 Euro. Your arms not strong enough anyway.
3) Meanwhile also buy any 120mm film you get hold of...especially all the expired inexpensive film sold by people that appears to be wise enough to have kept it cold and dark. Fill your own freezer.
4) Now you got that Pentax 6x7 you dreamt about.
5) If it didn't come with a lens you need to complement it with one of course. If you have no specific preferences, the 55mm, 105mm and 200mm is a good start, and among the least expensive.
6) As soon you get the first lens, get started shooting! Now you realise you need to use the dumbbells more...
7) If it didn't come with a meetering prism, its time to get one now. Patience again. Can go cheaply.
8) The wood grip! You must get one. It looks cool, and maybe you can cut down on the dumbbells...?
9) And the waist level finder. And more lenses.
10) Now you discovered how expensive it is to develop 120mm in a lab. You better buy your own development tank etc.
11) Saving on development you can now buy more film....but it becomes a feed back circle. Soon you shoot film all days, and develope it all night. It's now you realise how hard it is for your arms to agitate the development tank... Back to the dumbbells!
12) And then more lenses, macro tubes, a sturdier tripod... By the way...a dedicated film freezer maybe. The familly complains the one in the kitchen have no room for food...
13) By the time you get hold of the 500mm and the gigantic 6x7 auto bellows you realise you need another room for your gear...
14) ...and a big fight with your wife ends with a peace settlement. It includes building a new house with a photo studio/darkroom for you and a room for the wifes 2m wide loom and massive amounts of textile material (or I'm sure she has some other hobby...if not, offer a spa room with bubble pool etc.).
15) Building a new house you realise how great it now is that you have such strong arms. Everyone is happy!
Forum: Pentax News and Rumors 10-28-2016, 04:33 AM  
Irix 11mm f/4 full frame in K mount
Posted By Douglas_of_Sweden
Replies: 91
Views: 18,477
On the contrary I think we will see Samyang lenses with autofocus within 5 years. And then some Chinese autofocus lenses...
Forum: Pentax K-1 10-28-2016, 04:24 AM  
Best Portrait lens for my K-1
Posted By Douglas_of_Sweden
Replies: 79
Views: 7,892
What work for portraits is very personal and dependent on the situation. But you've already indicated that you feel your 50mm and 100mm to be wrong for you. So lets focus on the range classically considered portraits lenses.

The A*85/1.4 and its sibling the 77/1.8ltd (they share nearly the same lens design) are great lenses. But they are also very sharp lenses. In that sense they aren't traditional portrait lenses, and your ladies might find them too unfriendly.

In that regard the FA*85/1.4 does much better. Without being soft it gives a smoother skin texture.

Then there is the K85/1.8 and its sibling the SMC-Takumar 85/1.8. A very nice portrait lens that also give you a smootheer skin texture.

The M85/2 and its sibling the Super Takunar 85/1.9 are also traditional portrait lenses in that sense. It is one of these lenses that appears to do better on digital than on film for some obscure reason.

Now if you really wish to hide signa of age etc you shouldn't forget Pentax both soft portrait lenses:
K85/2.2. soft
FA85/2.8 soft
The K85 soft gives better controle over the softness, but the F85 soft has autofocus...
Both allow you to let whatever the subject wish to hide dissapear in romantic bliss. The prices is actually quite low, probably because people think they can achieve the same in post processing. But I have enjoyed mine.

Had you not ruled out 100mm as too long I'd also suggested the K105/2.8, which is also a nice portrait lens which hide some aspects of reality.
Forum: Pentax Medium Format 10-28-2016, 03:48 AM  
using the K-1 with pixelshift to "scan" medium format negatives/sludes, anyone??
Posted By Douglas_of_Sweden
Replies: 14
Views: 1,827
Have patience!

The 67 auto bellows and slide copier just arrived from Japan. They are incredibly large!
I mean, I knew they would be...but it is another thing to see it in reality!

I've got a problem with the power source for the LED lamps I ordered for this, otherwise I've got all parts now. Due to work load and some travel it'll take me 1-2 weeks before I can put this together and test it. But when I get there I promisse a picture of the set up. And eventually of some scanned photos.
Forum: Pentax DSLR Discussion 10-22-2016, 12:05 AM  
UWA options for K-1
Posted By Douglas_of_Sweden
Replies: 36
Views: 2,281
The problem is that all used Pentax full frame lenses went up in price steeply from when Ricoh announced that there would actually be a FF camera. So did the FAJ and the 20-35mm.
I don't know the Tokina personally...but have noted that there are several Tokinas in this focal range, with quite different reputation. I considered them as well as some Sigmas in the same range about a year ago, but ended up with the FAJ very cheaply and after much patience the FA 20-35mm.
I'm happy with both.
The Tokinas are probably better built than the FAJ, but not better than the FA, which is built in the same style as my FA28, FA35, FA50/1.4, FA50 macro, FA135...meaning metal in combination with strong black plastic. But the FA20-35 is as you noticed relatively rare. I think it was a rather late design of the film era so not that many were sold before the APS-C era came and made 20-35mm less a usefull range.
One thing to remember is that 17mm is much wider than 19mm. The millimiters really matter in the ultrawide range.
Forum: Pentax DSLR Discussion 10-19-2016, 05:42 PM  
UWA options for K-1
Posted By Douglas_of_Sweden
Replies: 36
Views: 2,281
The once I have are

Super Takumar 20mm f4.5

SMC Pentax 18mm f3.5

SMC Pentax-M 20mm f4

Cosina MC 20mm f3.8 (with A contacts)

SMC Penrax-F 17-28mm f3.5-4.5 fisheye

SMC Penrax-FA 20-35mm f4 AL GC

SMC Pentax-FAJ 18-35mm f4-5.6

Sigma 20mm f1.8 EX AL

I haven't tried the Takumar much on the K-1. But the others I can say something about.

The K 18/3.5 is a fantastic lens that still.holds up on digital full frame. Of course wide open the center is sharper than the corners, but close down 2 steps and it us sharp all over.

The M 20/4 is not as good as the 18mm, but much more compact. Corners does OK closed down.

The Cosina was my low budget solution to not being able to afford the A20/2.8 about 1990. It is surpricingly good for the money and also well built (full metal, unlike the Cosina A24 and 28mm). I think it is the same sold as Vivitar 21/3.8 with A-contact. I don't know if the Cosina 20mm without A contacs is the same optics.

The 17-28mm FE is a lens everyone should get to the K-1 and just as fun and usefull on full frame as the DA10-17 FE is on the cropped cameras. But it is a fisheye, so perhaps not what you want now.

FA 20-35mm f4 is a very attractive wide angle lens that I like for street shooting on the K-1. Closed to f8 it is hard to separate shots from the FA*24mm and FA35mm. Some light vignetting at 20mm.

FAJ 18-35mm. Not as good as the FA20-35mm (but of course a bit wider). Very plastic. Inexpensive. But for the money a good lens. Some vignetting at 18-20mm.

The Sigma 20/1.8 is a really good lens. I've used it a lot for labdscape on the K-1 and is very happy with the results. Only drawback is that it is big and heavy.

The Cosina 20mm or FAJ17-28mm might serve as inexpensive preliminary solution while you save up for the new 15-30mm?
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