HD Pentax-DA Fish-Eye 10-17mm f/3.5-4.5 ED

sungibr · 07-05-2019, 09:27 AM

Originally posted by Mistral75

It is removable since it has a dedicated spare part number: PH-RBA60.

hum.

Haven't noticed that.

**barondla** · 07-05-2019, 09:29 AM

Just bought a K-1. The original 10-17 gives a round image cropped by the goofy petal hood shape. Removing the hood should give a true circular fisheye effect at 10mm. That would be neat. Wish the original 10-17 had a removable hood.
thanks,
barondla

sungibr · 07-05-2019, 09:33 AM

Originally posted by biz-engineer

Still a DA lens. Do you think that lens would work on the K1 without much vignetting?

From my experience, most lens will vignette a bit. What I believe it's most important is how much a photographer will think it's acceptable.

People who have sawned and used the da10-17 said it's been quite usable, with accetable vigneting.

Also, vignette is the most easily corretable aberration in a lens.

**mlt** · 07-05-2019, 10:21 AM

It will be interesting to see the first tests of this new version on a K-1.

Mistral75 · 07-05-2019, 11:05 AM

Originally posted by sungibr

From my experience, most lens will vignette a bit. What I believe it's most important is how much a photographer will think it's acceptable.

People who have sawned and used the da10-17 said it's been quite usable, with accetable vigneting.

Also, vignette is the most easily corretable aberration in a lens.

Not always.

http://www.criseis.ruhr.de/bilder/pentax_10mm/zoom3.jpg

BarneyL · 07-05-2019, 11:19 AM

Originally posted by JPT

I have the existing DA 10-17 and, while I like it a lot, the PF is a very real issue with this lens. I’ve long thought this lens would benefit more than any other from getting the latest coatings.

Honest question - can better coatings improve lens performance regarding CA/purple fringing?

biz-engineer · 07-05-2019, 11:58 AM

Originally posted by Mistral75

They are indeed very smart at Ricoh Imaging's, Pentax products division: they have to cope with minuscule R&D budgets, therefore they chose to cancel the roadmapped Fish-Eye Zoom Lens and to revamp the DA Fish-Eye 10-17mm f/3.5-4.5 with a removable hood instead, so that people could use the revamped lens with a 24x36 camera.

A fish-eye lens was included in the FF lens roadmap in 2018, then it was still in the K mount general roadmap but removed from the FF roadmap of 2019. Fish-eye is a special lens, not sure how well it sells relative to rectilinear lenses.

Mistral75 · 07-05-2019, 12:25 PM

The Fish-Eye Zoom Lens was simultaneously removed from both roadmaps published on 28 February 2019 just before CP+.

**Larrymc** · 07-05-2019, 01:10 PM - **1 Like**

Originally posted by BarneyL

Honest question - can better coatings improve lens performance regarding CA/purple fringing?

Honest answer......Maybe.

**pentaxus** · 07-05-2019, 03:36 PM

Ron is right. If you have to make another production run it is easier to use the current coatings. A little cosmetic/function upgrade doesn't hurt either.

Paul the Sunman · 07-05-2019, 03:45 PM

This is a fun lens, even on the K1. It is FF-compatible from about 14.5 mm up, and with the hood removed might be good from 13 mm or so. It will be a circular fisheye at 10 mm.

Mistral75 · 07-05-2019, 04:32 PM

Originally posted by Paul the Sunman

This is a fun lens, even on the K1. It is FF-compatible from about 14.5 mm up, and with the hood removed might be good from 13 mm or so. It will be a circular fisheye at 10 mm.

Not completely circular at 10mm:

http://www.criseis.ruhr.de/bilder/pentax_10mm/zoom3.jpg

Dr_who · 07-05-2019, 04:39 PM

Originally posted by seventhdr

My guess it that they have tweaked the lens hood arrangement and the lens can now be used on full frame 35mm cameras. The new lens hood could then be used with APS-C cameras.

This would make it like the Tokina version of this lens where it is available in two flavours. With a built in hood for APS-C and without a hood for full frame.

Regards

Chris

I think if they were making it so it would be usable in full frame they would have done so and added a FA tag instead of a DA tag.

**Serkevan** · 07-05-2019, 05:21 PM

Not necessarily... The officially compatible DA telephotos haven't changed designation. The HD FA 35 F2 also hasn't changed to D-FA.

Trickortreat · 07-06-2019, 12:03 AM

I really wish they start updatint the mechanical part of DA lenses rather than coatings and cosmetics.
Rotating focusing ring during af shoul really be a thing of the past.

07-05-2019, 09:33 AM	#33
sungibr Senior Member Join Date: Jan 2011 Location: Sao Paulo Photos: Albums Posts: 149	Originally posted by biz-engineer Still a DA lens. Do you think that lens would work on the K1 without much vignetting? From my experience, most lens will vignette a bit. What I believe it's most important is how much a photographer will think it's acceptable. People who have sawned and used the da10-17 said it's been quite usable, with accetable vigneting. Also, vignette is the most easily corretable aberration in a lens. Last edited by sungibr; 07-05-2019 at 09:45 AM.

07-05-2019, 10:21 AM	#34
mlt Site Supporter Join Date: Dec 2007 Posts: 1,159	New version of 10-17 It will be interesting to see the first tests of this new version on a K-1.

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07-05-2019, 09:27 AM	#31
sungibr Senior Member Join Date: Jan 2011 Location: Sao Paulo Photos: Albums Posts: 149	Originally posted by Mistral75 It is removable since it has a dedicated spare part number: PH-RBA60. hum. Haven't noticed that.

07-05-2019, 09:29 AM	#32
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,714	Just bought a K-1. The original 10-17 gives a round image cropped by the goofy petal hood shape. Removing the hood should give a true circular fisheye effect at 10mm. That would be neat. Wish the original 10-17 had a removable hood. thanks, barondla

07-05-2019, 11:05 AM	#35
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527 Original Poster	Originally posted by sungibr From my experience, most lens will vignette a bit. What I believe it's most important is how much a photographer will think it's acceptable. People who have sawned and used the da10-17 said it's been quite usable, with accetable vigneting. Also, vignette is the most easily corretable aberration in a lens. Not always. http://www.criseis.ruhr.de/bilder/pentax_10mm/zoom3.jpg

07-05-2019, 11:19 AM	#36
BarneyL Pentaxian Join Date: Feb 2017 Posts: 899	Originally posted by JPT I have the existing DA 10-17 and, while I like it a lot, the PF is a very real issue with this lens. I’ve long thought this lens would benefit more than any other from getting the latest coatings. Honest question - can better coatings improve lens performance regarding CA/purple fringing?

07-05-2019, 11:58 AM	#37
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,231	Originally posted by Mistral75 They are indeed very smart at Ricoh Imaging's, Pentax products division: they have to cope with minuscule R&D budgets, therefore they chose to cancel the roadmapped Fish-Eye Zoom Lens and to revamp the DA Fish-Eye 10-17mm f/3.5-4.5 with a removable hood instead, so that people could use the revamped lens with a 24x36 camera. A fish-eye lens was included in the FF lens roadmap in 2018, then it was still in the K mount general roadmap but removed from the FF roadmap of 2019. Fish-eye is a special lens, not sure how well it sells relative to rectilinear lenses.

07-05-2019, 12:25 PM	#38
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527 Original Poster	The Fish-Eye Zoom Lens was simultaneously removed from both roadmaps published on 28 February 2019 just before CP+.

07-05-2019, 01:10 PM - 1 Like	#39
Larrymc Site Supporter Join Date: Jun 2014 Location: Mississippi, USA Posts: 5,251	Originally posted by BarneyL Honest question - can better coatings improve lens performance regarding CA/purple fringing? Honest answer......Maybe.

07-05-2019, 03:36 PM	#40
pentaxus Site Supporter Join Date: Jun 2010 Location: Central Coast, CA Posts: 1,313	Ron is right. If you have to make another production run it is easier to use the current coatings. A little cosmetic/function upgrade doesn't hurt either.

07-05-2019, 03:45 PM	#41
Paul the Sunman Pentaxian Join Date: Aug 2011 Location: Melbourne Photos: Gallery Posts: 4,843	This is a fun lens, even on the K1. It is FF-compatible from about 14.5 mm up, and with the hood removed might be good from 13 mm or so. It will be a circular fisheye at 10 mm.

07-05-2019, 04:32 PM	#42
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527 Original Poster	Originally posted by Paul the Sunman This is a fun lens, even on the K1. It is FF-compatible from about 14.5 mm up, and with the hood removed might be good from 13 mm or so. It will be a circular fisheye at 10 mm. Not completely circular at 10mm: http://www.criseis.ruhr.de/bilder/pentax_10mm/zoom3.jpg

07-05-2019, 04:39 PM	#43
Dr_who Veteran Member Join Date: Jun 2009 Location: Edmonton, Alberta, Canada Photos: Gallery \| Albums Posts: 777	Originally posted by seventhdr My guess it that they have tweaked the lens hood arrangement and the lens can now be used on full frame 35mm cameras. The new lens hood could then be used with APS-C cameras. This would make it like the Tokina version of this lens where it is available in two flavours. With a built in hood for APS-C and without a hood for full frame. Regards Chris I think if they were making it so it would be usable in full frame they would have done so and added a FA tag instead of a DA tag.

07-05-2019, 05:21 PM	#44
Serkevan Site Supporter Join Date: May 2019 Photos: Albums Posts: 5,976	Not necessarily... The officially compatible DA telephotos haven't changed designation. The HD FA 35 F2 also hasn't changed to D-FA.

07-06-2019, 12:03 AM	#45
Trickortreat Veteran Member Join Date: Dec 2013 Posts: 561	I really wish they start updatint the mechanical part of DA lenses rather than coatings and cosmetics. Rotating focusing ring during af shoul really be a thing of the past.