new HD D-FA lenses with green ring?

bdery · 02-17-2015, 11:25 AM

Originally posted by shaolen

whoa I didn't know that had a ring

It doesn't, sorry I wasn't clear. The lettering is mostly blue, though, which has never been seen before or after on a Pentax lens (or any other brand).

It looks good though.

**skunktail** · 02-17-2015, 02:03 PM

Originally posted by Kerrowdown

Originally posted by shaolen
I thought the HD lenses have red rings but these new ones have green ones

It's so folk don't confuse them with Canon...

Sorry, Kerrowdown, Canon have started using green rings too.
Canon Professional Network - Coloured Rings

although according to Canon,
"These use a diffractive optic to produce a lens that is significantly smaller and lighter than other lenses with a similar focal length"

which sounds like they want to be Pentax lenses, so who is copying who?

AquaDome · 02-17-2015, 11:29 PM

Difractive Optic means Freznel lens. You know, those things stuck on the back windows of RVs so the driver can see out the rear window through his rearview mirror.

deus ursus · 02-18-2015, 03:02 AM

Pentax' red ring looks better than Canon's red ring, IMHO. :-)

bdery · 02-18-2015, 05:47 AM

Originally posted by skunktail

Sorry, Kerrowdown, Canon have started using green rings too.

Ugh.

Originally posted by AquaDome

Difractive Optic means Freznel lens.

Not necessarily, though in that case it might. "Diffractive optics" essentially means "an optical component that's not a mirror" so strictly speaking it's nothing new. So it's a buzzword that obviously has some meaning, but the name itself does not tell us what's under the hood. If you have definitive info, I'd be interested to read it.

JimC1101 · 02-18-2015, 06:56 AM

Originally posted by jatrax

I believe they mentioned that going forward lenses would have green rings, the red is gone. Speculation is that they read the horrified expressions of displeasure at the red color on Pentax Forums and felt they had to change.

Star lenses will retain gold rings. It seems, if this is true, the only red rings will be on the DA Limiteds and the 16-85.

Yeah I don't like the HD red, looks like Canon to me, but if you look at the roadmap, they have the new 2015 or later lenses denoted in red. Does that mean they will be red ? Or HD ? or will they change it to the actual ring color once they are released.

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02-17-2015, 11:25 AM	#16
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,356	Originally posted by shaolen whoa I didn't know that had a ring It doesn't, sorry I wasn't clear. The lettering is mostly blue, though, which has never been seen before or after on a Pentax lens (or any other brand). It looks good though.

02-17-2015, 02:03 PM	#17
skunktail Site Supporter Join Date: Jan 2013 Location: Sydney, NSW Photos: Gallery \| Albums Posts: 287	Originally posted by Kerrowdown Originally posted by shaolen I thought the HD lenses have red rings but these new ones have green ones It's so folk don't confuse them with Canon... Sorry, Kerrowdown, Canon have started using green rings too. Canon Professional Network - Coloured Rings although according to Canon, "These use a diffractive optic to produce a lens that is significantly smaller and lighter than other lenses with a similar focal length" which sounds like they want to be Pentax lenses, so who is copying who?

02-17-2015, 11:29 PM	#18
AquaDome Veteran Member Join Date: Jan 2014 Location: New Carlisle, IN Photos: Gallery \| Albums Posts: 1,475	Difractive Optic means Freznel lens. You know, those things stuck on the back windows of RVs so the driver can see out the rear window through his rearview mirror.

02-18-2015, 03:02 AM	#19
deus ursus Pentaxian Join Date: Nov 2012 Location: Stårheim, Norway Posts: 658	Pentax' red ring looks better than Canon's red ring, IMHO. :-)

02-18-2015, 05:47 AM	#20
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,356	Originally posted by skunktail Sorry, Kerrowdown, Canon have started using green rings too. Ugh. Originally posted by AquaDome Difractive Optic means Freznel lens. Not necessarily, though in that case it might. "Diffractive optics" essentially means "an optical component that's not a mirror" so strictly speaking it's nothing new. So it's a buzzword that obviously has some meaning, but the name itself does not tell us what's under the hood. If you have definitive info, I'd be interested to read it.

02-18-2015, 06:56 AM	#21
JimC1101 Veteran Member Join Date: Aug 2010 Location: Fremont, Ca Photos: Albums Posts: 395	Originally posted by jatrax I believe they mentioned that going forward lenses would have green rings, the red is gone. Speculation is that they read the horrified expressions of displeasure at the red color on Pentax Forums and felt they had to change. Star lenses will retain gold rings. It seems, if this is true, the only red rings will be on the DA Limiteds and the 16-85. Yeah I don't like the HD red, looks like Canon to me, but if you look at the roadmap, they have the new 2015 or later lenses denoted in red. Does that mean they will be red ? Or HD ? or will they change it to the actual ring color once they are released.

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