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Forum: Pentax SLR Lens Discussion 03-06-2020, 02:14 AM  
FA 50 1.4 vs FA 50 1.7 primes
Posted By timo
Replies: 26
Views: 1,408
Yes, that seems pretty convincing, I admit. As it happens the AF 50 I kept was the FA1.7. So that's all right. But I also kept both the Ms - 1.4 and 1.7. (And I have the 2.0 - ok stopped down, and amazingly light). My K 1.2 was stolen on a train in Belgium many years ago. Not sure how that would compare.
Forum: Pentax SLR Lens Discussion 03-05-2020, 11:46 AM  
FA 50 1.4 vs FA 50 1.7 primes
Posted By timo
Replies: 26
Views: 1,408
I have had both. Wide open the the f/1.7 does show more contrast than the f/1.4, but I was never convinced there was much difference in actual resolution. Stopped down to f/2.0 or certainly f/2.8 I couldn't tell the difference. Except that, when doing a direct comparison, I felt that the f/1.4 was very very very slightly sharper at the extreme edges stopped down, but really nothing in it.
Forum: Pentax SLR Lens Discussion 10-27-2019, 02:55 AM  
The lens everyone seems to love but you never liked
Posted By timo
Replies: 63
Views: 3,205
I had a DA 55-300 (metal mount) when it first came out. It was not a good lens, decentered in various different directions according to focal length setting. It went all the way back to Tokyo to be sorted, and came back even worse. Later I got a cheap second-hand deal on the plastic-mount version, which is actually much better, ironically. But it has never really gained my affections.
Forum: Pentax Q 10-10-2019, 04:32 AM  
Q + M lens vs conventional telephoto zoom for M4/3
Posted By timo
Replies: 7
Views: 723
Somewhere I have a couple of those viewfinders that you put on the hot shoe. Can't remember what FOV the frames indicate. As you say they would only be useful for general aiming but it might be fun to try. I have 28, 50 and 100mm lenses that it would be worth having a go with.

OK, off to eBay I guess.

---------- Post added 10-10-2019 at 07:35 PM ----------



I have an M50/4 macro - that could be interesting.
Forum: Pentax Q 10-10-2019, 02:06 AM  
Q + M lens vs conventional telephoto zoom for M4/3
Posted By timo
Replies: 7
Views: 723
Good morning all

As my back is ageing, weight becomes a dominant factor in choosing gear, which is why I have partly migrated to M4/3 for travel use. But I still have a shedload of old Pentax DSLR bodies (any offers?) and lenses, including M lenses in good condition (dry box).

As an alternative to carrying a fairly substantial M4/3 telephoto zoom, would it make sense to get a Q body and put an M or K 28, M50 or M100 or M150 on the front? The body will weigh very little. The crop factor really cranks up the effective focal length.

The downside, I suppose, would be no EVF, and no stabilisation.
.
How does the Q image quality compare with the average phone these days? I bet it's better than my iPhone 6S.
Forum: Monthly Photo Contests 04-09-2019, 11:35 PM  
Awaiting the rain
Posted By timo
Replies: 26
Views: 634
Thank God, no rocks in the foreground
Forum: Monthly Photo Contests 04-09-2019, 11:33 PM  
hi
Posted By timo
Replies: 50
Views: 1,384
Thank God no bloody rocks in the immediate foreground
Forum: Monthly Photo Contests 04-09-2019, 11:32 PM  
Kluane Icefields
Posted By timo
Replies: 4
Views: 206
I would like to nominate this photo
Forum: Monthly Photo Contests 04-09-2019, 11:31 PM  
Pocklington Canal at Cottingwith
Posted By timo
Replies: 13
Views: 489
I would like to nominate this photo
Forum: Monthly Photo Contests 04-09-2019, 11:29 PM  
Mono color
Posted By timo
Replies: 22
Views: 406
I would like to nominate this photo
Forum: Monthly Photo Contests 04-09-2019, 11:27 PM  
Sky and Ice
Posted By timo
Replies: 14
Views: 321
Mind you, hard to go wrong in this situation!
Forum: Monthly Photo Contests 04-09-2019, 11:24 PM  
Landscape in Color - Southern Alberta Sunrise
Posted By timo
Replies: 17
Views: 580
I would like to nominate this photo
Forum: Pentax SLR Lens Discussion 03-15-2018, 02:07 AM  
HD DA 21mm Ltd Lens Not Sharp Enough, or Just My Focusing Error?
Posted By timo
Replies: 19
Views: 2,535
By f/11-16 you may be running into softness through diffraction. Also, for what it's worth, when I first got my DA21, it did front focus dreadfully. It was fixed finally by Pentax - this was years ago before micro-focus adjustment was available on the cameras.
Forum: Pentax SLR Lens Discussion 12-12-2016, 05:27 AM  
what has been your most "disappointing" lens?
Posted By timo
Replies: 178
Views: 15,728
DA55-300 x 2
The first one (metal mount) was clearly, visibly, obviously defective. It was sent back to Pentax in Tokyo and came back worse. It was re-sent back, and declared to be 'within spec'. Well, if it was within spec, Pentax thoroughly deserved all the uncertainties that surrounded its fate at the time.
The second one I got as an act of misguided faith, with the plastic mount, is better, but noticeably decentred at various focal lengths.

So I gave up, and get much better results with my M manuals, notably 100/2.8, 150/3.6, and even the much despised 200/4. So to hell with the 55-300s, both of them.

Actually the worst lens I EVER had was the cheapo Sigma 18-50, available a decade or so ago. That really was a stinker, although hailed at the time as a worthy alternative to the mediocre FAJ 18-35 that Pentax were offering as a kit lens for the *istD. Oddly the Sigma 50-200 that went with it was quite good, albeit a bit heavy.

---------- Post added 12-12-2016 at 08:31 PM ----------



I don't think the 1.4 is as bad wide open as some say - the key is to get the focus right. The 1.7 has a bit more contrast wide open, but the difference is not night-and-day. Once stopped down a bit, I find the 1.4 superior, certainly at the edges.

This is all quibbling. They are both excellent for what one would use them for - and I use the M 50 1.7 regularly with an adaptor on my M4/3 GX7. Very nice.
Forum: Pentax SLR Lens Discussion 10-19-2016, 02:05 AM  
100 2.8 vs. 135 2.8
Posted By timo
Replies: 12
Views: 1,271
And there's the K 105/2.8, a very nice lens.
Forum: Lens Clubs 11-22-2015, 11:57 PM  
The K-Club!
Posted By timo
Replies: 3,666
Views: 601,651
It's ages since I last contributed anything to the forum, so it's time I did something about it. Here's couple a with the K SMC 105 f/2,8. I really like this lens, although it is quite dreamy wide open, and liable to produce serious fringing on very high contrast edges unless stopped down. (On the first of these shots I had to neutralise a pretty obvious fringe along the top of the upper flower. Now I notice that the lower flower could have done with the same treatment.) Close it down to f.5.6 or more and it's very sharp. The bokeh is nicer than I remember - it has been sitting in my dry cabinet for a couple of years, sadly neglected. My acquisition of a Panny GX7, with an adaptor, live view and focus peaking has re-energised my interest in these old lenses. Now I get easier focus and aperture priority automatic exposure.

Incidentally this is the actual lens that's illustrated in the lens database, the one on the left.





Tim
Forum: Lens Clubs 09-25-2015, 01:37 AM  
The M Club!
Posted By timo
Replies: 8,341
Views: 1,237,083
Nice. A touch of JMW Turner here.
Forum: Pentax SLR Lens Discussion 03-06-2015, 11:09 PM  
50mm comparison - f1.7 vs f1.4
Posted By timo
Replies: 22
Views: 4,917
I have had a variety of M and FA 50s over the years, and my impression has been that the 1.4 is just as sharp as the 1.7 at equivalent wide settings, but has lower contrast wide open; and that stopped down the corners of the 1.4 are very slightly better. But the differences are tiny, and I am not going to waste more of my life doing more comparisons! I'm sure some of the comments on the 1.4's alleged softness wide open are down to the difficulty of getting the focus spot-on with such a shallow DOF.
Forum: Pentax SLR Lens Discussion 01-13-2015, 03:06 AM  
One prime lens for street photography, including nighttime
Posted By timo
Replies: 99
Views: 25,432
Nothing wrong with a dead thread. They have as much useful information as living ones.
Forum: Lens Clubs 12-31-2014, 08:17 PM  
The M Club!
Posted By timo
Replies: 8,341
Views: 1,237,083
Refreshing to see a 'new' perspective on Istanbul. Superb shot - and nice to see the M150 get some appreciation. I think it's a very good lens.
Forum: Lens Clubs 12-03-2014, 03:42 AM  
The DA Limited Club
Posted By timo
Replies: 5,495
Views: 1,067,042
The DA21, St Paul's Cathedral, London, and a nice day.

Tim
Forum: Pentax Forums Giveaways 10-23-2014, 02:22 AM  
Poll: Lens Tournament: DA 21mm F3.2 vs K 28mm F3.5
Posted By timo
Replies: 26
Views: 5,708
I have both and I have never been able to see any significant difference between them. So the M version wins in practice because it's less of a pain to carry around.
Forum: Pentax SLR Lens Discussion 10-15-2014, 12:29 AM  
HD DA15 Limited sharpness
Posted By timo
Replies: 17
Views: 10,615
I often find wide-angle lenses rather unreliable in focusing - my DA15 is unpredictable in sharpness terms, and I suspect focusing must be the reason (despite the huge depth of focus field you should get with that lens).
Forum: Pentax SLR Lens Discussion 10-09-2014, 08:32 PM  
Is this normal sharpness for the SMC 40mm Limited?
Posted By timo
Replies: 24
Views: 3,841
The complete shots are too small to tell here; the third one (the detail) is not focused on this bit of the image. The bubbly things are just out-of-focus highlights - this lens is not a great bokeh-creator. Can't really tell if the lens is at fault from these samples. I have a DA40, and while I find the focal length a bit strange, it performs very solidly.
Forum: Pentax SLR Lens Discussion 10-09-2014, 08:27 PM  
Traveling to Europe. Lens ideas?
Posted By timo
Replies: 65
Views: 6,993
Well that's one answer! But I don't wear progressives - had them a long time ago, but the 'in focus' zones never seemed to match up for the two eyes. Lousy supplier maybe.

Tim

(still unconvinced!)
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