HD Pentax-DA★ 11-18mm f/2.8

**pres589** · 10-30-2017, 03:46 PM

Rectilinear.

**Douglas_of_Sweden** · 10-30-2017, 04:45 PM

Originally posted by Cambo

It's too bad they are, or I would buy that. I wonder if this is a 'de-fished' 10-17? Time will tell. And does the tape on the focal scale window mean they have FINALLY implemented my 20+ year old idea of a wide zoom having a digital hyper-focal scale that reacts to the zoom focal length? I hope so, and if so, Ricoh, please send your royalty cheques to stave off the impending lawsuit to Cameron Hood...

Nice lens, Pentax; yay for APSC!

It's to bad my K3ii is SOO noisy at ISO 52,000...

Cheers,
Cameron

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.

**jpzk** · 10-30-2017, 06:40 PM

Originally posted by mellenby

will this fisheye or will it be a standard lens ?

Not a fisheye for sure.
Then again, has anyone ever seen a fisheye zoom lens? Just curious here.

**monochrome** · 10-30-2017, 07:06 PM

Originally posted by jpzk

Not a fisheye for sure.
Then again, has anyone ever seen a fisheye zoom lens? Just curious here.

Pentax F17-28/3.5-4.5 FISH EYE.

Weird sort of lens. Mine has a hitch in the zoom. Who would fix it?

Last edited by monochrome; 10-30-2017 at 07:12 PM.

bhairavp · 10-30-2017, 07:07 PM

Of course, the Pentax DA 10-17 for APSC and the older F17-28. Both are fisheye zooms.

**clackers** · 10-30-2017, 07:07 PM

Originally posted by jpzk

Not a fisheye for sure.
Then again, has anyone ever seen a fisheye zoom lens? Just curious here.

The current DA 10-17 is a fisheye, too.

surfar · 10-30-2017, 10:18 PM

All a bit Fishy?

ogl · 10-30-2017, 11:05 PM

Originally posted by eurostar

The question is WHY?, when you have the 15-30 that cover full frame.

heavy and very big

Zygonyx · 10-31-2017, 12:57 AM

Originally posted by sculptor666

i don't think any of the laowa lenses have an aperture lever or any contacts.

The 12mm has an apperture lever and an A position.

**clackers** · 10-31-2017, 04:18 AM

Originally posted by ogl

heavy and very big

Serious lens for a serious camera.

D1N0 · 10-31-2017, 04:27 AM

Originally posted by eurostar

The question is WHY?, when you have the 15-30 that cover full frame.

The question was, will it work on full frame? Why you would want to use it on full frame is another question.

ogl · 10-31-2017, 05:31 AM

Originally posted by clackers

Serious lens for a serious camera.

The users from Penta-club say that it's not easy-to-use during trips and any travel....TWO light wide-angle prime lenses could be better.

rasebe · 10-31-2017, 06:01 AM

Looks fantastic! I have been using a Sigma 12-24 FF and the images are fantastic. The downside is variable aperture. Although I would love to upscale to FF the image quality from my K3 using FF lenses are great. However that looks like the next purchase but well have to see.

**pres589** · 10-31-2017, 06:04 AM

Penta-club? What's that?

And I'm sorry but I can't see two primes in the bag being easier to deal with than a single zoom. Like, come on, seriously?

ogl · 10-31-2017, 07:24 AM

Originally posted by pres589

Penta-club? What's that?

And I'm sorry but I can't see two primes in the bag being easier to deal with than a single zoom. Like, come on, seriously?

It's Russian Pentax club.

Did you ever see FA20/2.8 or FA 28/2.8, for example? Or Voigtländer Lenses for M-mount?

DFA15-30
Diameter x length 98.5mm x 143.5mm
Weight approx.1040g
1 KG!!!!

You can"t use any common filters with DFA15-30. Do you know it?

For example,

FA20/2.8
70 x 43.5 mm and 255 g

FA31
65 x 69 mm and 345 g

or
FA 28/2.8
65 x 41 mm and 185 g

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10-30-2017, 03:46 PM	#406
pres589 Site Supporter Join Date: Jan 2014 Location: Wichita, KS Photos: Albums Posts: 4,529	Rectilinear.

10-30-2017, 04:45 PM	#407
Douglas_of_Sweden Site Supporter Join Date: Apr 2008 Location: Stockholm Photos: Gallery Posts: 3,374	Originally posted by Cambo It's too bad they are, or I would buy that. I wonder if this is a 'de-fished' 10-17? Time will tell. And does the tape on the focal scale window mean they have FINALLY implemented my 20+ year old idea of a wide zoom having a digital hyper-focal scale that reacts to the zoom focal length? I hope so, and if so, Ricoh, please send your royalty cheques to stave off the impending lawsuit to Cameron Hood... Nice lens, Pentax; yay for APSC! It's to bad my K3ii is SOO noisy at ISO 52,000... Cheers, Cameron 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.

10-30-2017, 06:40 PM	#408
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by mellenby will this fisheye or will it be a standard lens ? Not a fisheye for sure. Then again, has anyone ever seen a fisheye zoom lens? Just curious here.

10-30-2017, 07:06 PM	#409
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Originally posted by jpzk Not a fisheye for sure. Then again, has anyone ever seen a fisheye zoom lens? Just curious here. Pentax F17-28/3.5-4.5 FISH EYE. Weird sort of lens. Mine has a hitch in the zoom. Who would fix it? Last edited by monochrome; 10-30-2017 at 07:12 PM.

10-30-2017, 07:07 PM	#410
bhairavp Veteran Member Join Date: Jan 2010 Location: Mumbai, India Posts: 399	Of course, the Pentax DA 10-17 for APSC and the older F17-28. Both are fisheye zooms.

10-30-2017, 07:07 PM	#411
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by jpzk Not a fisheye for sure. Then again, has anyone ever seen a fisheye zoom lens? Just curious here. The current DA 10-17 is a fisheye, too.

10-30-2017, 10:18 PM	#412
surfar Pentaxian Join Date: Jan 2015 Location: mid nth coast,nsw Photos: Gallery Posts: 6,141	All a bit Fishy?

10-30-2017, 11:05 PM	#413
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by eurostar The question is WHY?, when you have the 15-30 that cover full frame. heavy and very big

10-31-2017, 12:57 AM	#414
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Originally posted by sculptor666 i don't think any of the laowa lenses have an aperture lever or any contacts. The 12mm has an apperture lever and an A position.

10-31-2017, 04:18 AM	#415
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by ogl heavy and very big Serious lens for a serious camera.

10-31-2017, 04:27 AM	#416
D1N0 Pentaxian Join Date: May 2012 Location: --- Photos: Gallery Posts: 6,802	Originally posted by eurostar The question is WHY?, when you have the 15-30 that cover full frame. The question was, will it work on full frame? Why you would want to use it on full frame is another question.

10-31-2017, 05:31 AM	#417
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by clackers Serious lens for a serious camera. The users from Penta-club say that it's not easy-to-use during trips and any travel....TWO light wide-angle prime lenses could be better.

10-31-2017, 06:01 AM	#418
rasebe New Member Join Date: Jan 2013 Location: Worcestershire, England Posts: 18	Looks fantastic! I have been using a Sigma 12-24 FF and the images are fantastic. The downside is variable aperture. Although I would love to upscale to FF the image quality from my K3 using FF lenses are great. However that looks like the next purchase but well have to see.

10-31-2017, 06:04 AM	#419
pres589 Site Supporter Join Date: Jan 2014 Location: Wichita, KS Photos: Albums Posts: 4,529	Penta-club? What's that? And I'm sorry but I can't see two primes in the bag being easier to deal with than a single zoom. Like, come on, seriously?

10-31-2017, 07:24 AM	#420
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	Originally posted by pres589 Penta-club? What's that? And I'm sorry but I can't see two primes in the bag being easier to deal with than a single zoom. Like, come on, seriously? It's Russian Pentax club. Did you ever see FA20/2.8 or FA 28/2.8, for example? Or Voigtländer Lenses for M-mount? DFA15-30 Diameter x length 98.5mm x 143.5mm Weight approx.1040g 1 KG!!!! You can"t use any common filters with DFA15-30. Do you know it? For example, FA20/2.8 70 x 43.5 mm and 255 g FA31 65 x 69 mm and 345 g or FA 28/2.8 65 x 41 mm and 185 g