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02-02-2019, 01:07 PM   #31
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Looking real cute on the K-3II...

02-02-2019, 01:42 PM   #32
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QuoteOriginally posted by Sandy Hancock Quote
I might be putting my DFA15-30 on the market soon.

This is smaller, lighter, takes filters, it's warmable, and it's a *real* Pentax
You can buy dedicated dew heaters that work on camera lenses and telescopes for awhile now. I'm not sure how much the grove helps but it certainly is interesting. I would have thought adding a feature like that would make more sense on a ultra wide prime with as much astigmatism and coma dealt with than in a zoom. But I guess we'll see what else shows up on the road map with that feature.
02-02-2019, 06:38 PM   #33
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QuoteOriginally posted by Mountain Vision Quote
Here are some comparison images with the 12-24 and mounted on the KP and K-3II.
Very interesting look and size comparison. I can see one on my KP right now. It really is the same old story. It is not necessarily a matter of either/or between the new lens and the DA 12-24mm f/4, which is still as much a very fine performer as it ever was. If one does not need the f/2.8, and does not need having WR, the DA 12-24mm will be just fine. But in my case, I do have f/2.8 zoom lenses in the range of 17-135mm plus 200mm. I have them because I sometimes do need that f/2.8 aperture. Even though my KP performs remarkably well at higher ISO settings, there is still an advantage in shooting a low light scene hand-held at half the ISO setting, or to get higher shutter speeds for action. And the new lens appears to deliver even slightly better performance wide open at f/2.8 compared to the DA 12-24mm wide open at f/4.

In keeping with what I have experienced in this regard, getting this new lens makes sense if I wish to do the same in scenes using wider angles than the f/2.8 lenses I now have. In more well-lit scenes, my DA 20-40mm f/2.8-4 Limited or my DA 18-135mm will serve very well. I don't need to haul about my Sigma 17-50mm f/2.8 or Sigma 24-60mm f/2.8, or my DA* 50-135mm when I'll be shooting at apertures of around f/5.6-11, with no need for sharp edge performance beyond 70mm . Same with this new lens. Unless I'll need WR or for low light, I would still keep my DA 12-24mm for many other uses.

---------- Post added 02-02-19 at 06:52 PM ----------

QuoteOriginally posted by Sandy Hancock Quote
I might be putting my DFA15-30 on the market soon.

This is smaller, lighter, takes filters, it's warmable, and it's a *real* Pentax
If I had a K-1 and DFA 15-30mm lens, and a KP, I would be entertaining the same consideration.

That said, UncleVanya has another thread- "What crop lens is most like the FA 31 on Full Frame?" The answer is- ain't none close. So here lies the greatest advantage for the K-1. APS-C lens design cannot practically match the FOV, aperture, and smaller size of this lens or the FA 43mm f/1.9 on a FF body. A 20mm lens of f/1.8 or a 28mm lens of f/1.9 would result in a huge, heavy, extremely costly product. For me, it is in these lenses, and the FA 35mm f/2, and perhaps an ultra wide fast prime, where a FF body especially beckons.

Last edited by mikesbike; 02-02-2019 at 06:57 PM.
02-03-2019, 12:31 AM   #34
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QuoteOriginally posted by mikesbike Quote
So here lies the greatest advantage for the K-1. APS-C lens design cannot practically match the FOV, aperture, and smaller size of this lens or the FA 43mm f/1.9 on a FF body. A 20mm lens of f/1.8 or a 28mm lens of f/1.9 would result in a huge, heavy, extremely costly product. For me, it is in these lenses, and the FA 35mm f/2, and perhaps an ultra wide fast prime, where a FF body especially beckons.
Choice of lenses matters here. I would contemplate the same as Sandy if my go-to system was still APS-C. My daughter will hopefully grow into her collection of DA Ltd lenses but for now she is happy with the 18-135. The form factor of these fine lenses is excellent. The 15-30 does make things quite unwieldy on the K-1, so I have umm'd and ahh'd over getting it. Thankfully, I have the luxury of starting off with an FA 20/2.8, which has since had to go for CLA treatment. In the meantime, I went for a Rokinon 14/2.8, which I must say has spoilt me for ultra wide angle photography without the need to go for an almost 2kg lens in the 15-30. Also having the 31 Ltd means I have every benefit of the 15-30, but only without the WR feature of the behemoth. It also means that landscape photography on the K-1 doesn't have to cost a great deal of finances.

02-03-2019, 02:13 AM - 1 Like   #35
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This looks like a very nice lens! Now I just need my semester to be over so I can get back to working to try to afford one in a few years time! In regards to aperture, my view is that it's better to have a wider aperture than not. You can always stop down, but you can't stop further up. My wide angle zoom is a Sigma 10-20 f3.5. It's a nice lens but I love having weather sealing which the Sigma doesn't have. If Pentax does revamp the 16-50, I'd definitely look into that one as well when it's announced.
02-03-2019, 11:20 AM   #36
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QuoteOriginally posted by superdave Quote
Well, let's compare the samples on the pentax website: 15-30 on K-1 VS 11-18 on KP.
Which is which??
02-03-2019, 11:41 AM   #37
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QuoteOriginally posted by jpzk Quote
Which is which??
Exactly, at 100 ISO, FF is not so different than APS-C, except there is a little more pixels.
(FF is on the left).

02-04-2019, 01:42 AM   #38
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QuoteOriginally posted by Rondec Quote
I have a couple of thoughts here. First of all, Pentax is focused on filling out the full frame line up. That will include DFA *35 and 85, along with a prosumer 70-300, 20-ish mm prime, and fisheye zoom and maybe some other stuff. That is enough work for them without re-doing old lenses. Second, there is probably a decent amount of stock floating around right now and Ricoh would risk being unable to move it if they gave an indication that they were coming out with updated 16-50 and 50-135 lenses.

The 11-18 is a clear indication though, that Pentax is planning to continue high end APS-C and will continue to release top end lenses for it. It was the one lens that was missing more than any others from the line up -- the ultra wide, weather sealed, f2.8 optic.

If I were going to guess, I would say that pentax will update both the 16-50 and 50-135, but that that update will happen a couple of years from now, say, 2021 at the earliest.
Good point Rondec
02-04-2019, 01:56 PM   #39
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The DA* lens that really needs updating is the DA* 60-250mm f/4 with its non-convertable sometimes faulty SDM, to a DC motor. It could also come with an easy-switch design for APS-C to FF, which we know it can do.
02-04-2019, 02:46 PM   #40
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QuoteOriginally posted by mikesbike Quote
The DA* lens that really needs updating is the DA* 60-250mm f/4 with its non-convertable sometimes faulty SDM, to a DC motor. It could also come with an easy-switch design for APS-C to FF, which we know it can do.
Future 70-200 f/4 is just around the corner and will probably be better than the 10 year old 60-250mm. It's a useful focal for FF and for APS-C too.

The top priority is 16-50mm (to pair with 11-18 as a landscape lens), it is not to the level of the others DA* and there is nothing really stellar in that focal range.
DA* 50-135mm is good enough, just need a faster motor.
DA* 200mm I don't know??
DA* 55mm is a little week but there is DFA* 50mm now.
DA* 300mm is my own second priority, it need a faster and way more precise motor. It has really good IQ when you can get your subject in perfect focus but that's way too random, especially with the TC1.4X.
02-04-2019, 06:03 PM   #41
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That 11-18 just got placed on my wish-list at B&H.
02-04-2019, 07:08 PM   #42
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QuoteOriginally posted by Ex Finn. Quote
That 11-18 just got placed on my wish-list at B&H.
There is a large gap between "wishes" and "intents".
02-04-2019, 07:23 PM   #43
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QuoteOriginally posted by Paul the Sunman Quote
There is a large gap between "wishes" and "intents".
Well, yes.
The 16-50 flares so bad that I do not really want to place a pre order...
Will wait for some actual user feedback but the FL would be great in confined quarters with my KP.
Been using the 12-24 for several years but it is not weather resistant and does suffer from some PF.
02-04-2019, 07:53 PM   #44
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QuoteOriginally posted by Ex Finn. Quote
Well, yes.
The 16-50 flares so bad that I do not really want to place a pre order...
Will wait for some actual user feedback but the FL would be great in confined quarters with my KP.
Been using the 12-24 for several years but it is not weather resistant and does suffer from some PF.
The 12-24 is a decent, really a fine lens, but it's one of the oldest in the lineup. The fact it was never updated to WR always bugged me, I thought that was a huge hole in the system.

I have a feeling the 11-18 is going to be a very good lens. Both in testing and in actual use. I'll be pairing mine with the 16-85mm.

02-04-2019, 08:03 PM   #45
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QuoteOriginally posted by Mountain Vision Quote
The 12-24 is a decent, really a fine lens, but it's one of the oldest in the lineup. The fact it was never updated to WR always bugged me, I thought that was a huge hole in the system.

I have a feeling the 11-18 is going to be a very good lens. Both in testing and in actual use. I'll be pairing mine with the 16-85mm.
Right there with you. I really want that 11-18 to work out and go with my 20-40 ltd.
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