DA★ 11-18mm coming soon !
I'm not sure I "get" the need for the wide aperture really ..... is it really necessary or effective to shoot at F2.8 at such wide angles? Surely the same images taken at F4.0 would be hardly any different.
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
The 12-24 is fairly old now, so is this a replacement? Presumably we can expect better, quieter DC autofocussing plus improved flare and distortion performance. Well, that's what I would be hoping for.
I'm not sure I "get" the need for the wide aperture really ..... is it really necessary or effective to shoot at F2.8 at such wide angles? Surely the same images taken at F4.0 would be hardly any different.
This exactly. I understand the need for an f/2.8 tele or standard zoom, but for wide angles it's not that significant. The bump in shutter speeds won't be all that great and there's the (very slightly) narrower DOF to work around if you're looking to use the wide aperture. If they released an f/4 or variable aperture version in addition to this (a limited design would be amazing) then I'd understand completely. But this seems as though it'll be rather expensive and catered for the pro crowd.
Imagine the possibilities though:11-18mm, 16-50mm, 50-135mm, with the 55mm too. You just can't go wrong there.
All the gear with no idea
However, no doubt this will be a very desirable item, especially if , as Id expect, its optical performance is class leading.
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Any of the EPZ wide angle lens reviews have a series of images shot specifically to show the effect of each aperture on depth of field and bokeh.
Best regards, John
My Guides to the Pentax Digital Camera Flash Lighting System : Download here from the PentaxForums Homepage Article .... link
Pentax K7 with BG-4 Grip / Samyang 14mm f2.8 ED AS IF UMC / DA18-55mm f3.5-5.6 AL WR / SMC A28mm f2.8 / D FA 28-105mm / SMC F35-70 f3.5-4.5 / SMC A50mm f1.7 / Tamron AF70-300mm f4-5.6 Di LD macro / SMC M75-150mm f4.0 / Tamron Adaptall (CT-135) 135mm f2.8 / Asahi Takumar-A 2X tele-converter / Pentax AF-540FGZ (I & II) Flashes / Cactus RF60/X Flashes & V6/V6II Transceiver
Regards
George
I've just read that the lens is not due for release until summer 2018. They don't rush into these things. I've heard folk say "Slow and steady wins the race"
By that time the Samyang 10.5-18.5mm f/2.3 will have been released

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Half Man... Half Pentax ... Half Cucumber
Pentax K-1 + K-5 and some other stuff
Algi
I think F2.8 may help with Astrophotography. (could be wrong here)
Regards
George
If they manage to avoid coma/CA issues then I think you're right. This lens might be a winner in that department.
All the gear with no idea
John K
PS Scratch that, the other post shows photos and it is a DA* 11-18mm.


Gareth
Welsh Photographer
My outfit: K1 gripped - K3ii - two Z-1P - Pentax D FA 24-70mm - Sigma 70-200mm OS HSM - Pentax modified DA* 60-250mm f4 - Irix 15mm Firefly - Pentax FA 35mm - FA 50mm - Sigma EX 20mm - FA 28-70mm f4 - Tamron SP 90mm macro - Pentax AF 540 FGZ II
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mille19
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Hopefully this means things could be moving on the K3 replacement front
DA* 11-18mm