DFA*50 1.4 coming

OoKU · 01-11-2018, 04:50 AM - **2 Likes**

?????????????K???????????HD PENTAX-D... - ????????? RICOH IMAGING | Facebook

---------- Post added 01-11-18 at 05:08 AM ----------

**BigMackCam** · 01-11-2018, 05:32 AM

Lovely out-of-focus highlights!

Having said that, does anyone else notice they're not perfectly circular? The edge of the lower left quarter of each highlight seems non-circular. Could simply be on the prototype, I suppose. Anyway, very minor... Overall, it looks great!

blende8 · 01-11-2018, 05:51 AM

Originally posted by BigMackCam

Lovely out-of-focus highlights!

Having said that, does anyone else notice they're not perfectly circular? The edge of the lower left quarter of each highlight seems non-circular.

The article says, it is taken with f2, so possibly we are seeing something of the aperture here?

Winder · 01-11-2018, 06:23 AM

Originally posted by BigMackCam

Lovely out-of-focus highlights!

Having said that, does anyone else notice they're not perfectly circular? The edge of the lower left quarter of each highlight seems non-circular. Could simply be on the prototype, I suppose. Anyway, very minor... Overall, it looks great!

9 blade aperture

awscreo · 01-11-2018, 06:24 AM - **1 Like**

No cat eye bokeh balls though, fairly round across the frame, pretty impressive!

**BigMackCam** · 01-11-2018, 06:27 AM

Originally posted by Winder

9 blade aperture

Gotcha. I wonder why they didn't go for rounded blades (or maybe they did?)... Not that it really matters. Looks very good indeed

JPT · 01-11-2018, 06:51 AM

Looks like the bokeh is fantastic and consistent. Uh-oh. Starting to want it now. The accompanying text repeats that it's planned to be available in spring, by the way. Sounds like it's still on schedule.

Winder · 01-11-2018, 07:03 AM

Originally posted by BigMackCam

Gotcha. I wonder why they didn't go for rounded blades (or maybe they did?)... Not that it really matters. Looks very good indeed

The final version might have rounded blades. More important is that you don't see any Longitudinal chromatic aberration. I hope we see more tests shots soon... Screw that I want to see the lens soon.

**BigMackCam** · 01-11-2018, 07:04 AM

Originally posted by Winder

More important is that you don't see any Longitudinal chromatic aberration.

Agreed

MMVIII · 01-11-2018, 09:57 AM

Right, now this seems to become the one classic 85 1.8 short tele lens for lovely bokeh and all this stuff to be even desireable for me as a KP shooter with no intention to go larger. Thank you Ricoh, I thought of going the more cost sensitive way with this decision and you might ruin it.

ogl · 01-11-2018, 10:33 AM

12 blades are better than 9

MMVIII · 01-11-2018, 10:56 AM

Originally posted by ogl

12 blades are better than 9

How can I understand that? Do you mean the image is okayish but could be better with a 12 blade design, or do you mean the imgage shows that the design is a fail, or you suggest they should go back to the drawing board and bring a better design? Uhoh!

Na Horuk · 01-11-2018, 11:01 AM

Originally posted by BigMackCam

Having said that, does anyone else notice they're not perfectly circular?

Probably due to distortion, coma and the shape of aperture blades. If that is f2, its actually pretty good in the centre, very few lenses have such nice circles slightly stopped down, especially in FF edges. My old M 50mm f1.7 has harsh star-hexagons between f2 and f3 and my other old normal lenses can be quite distorted in edges (even on APSC).
And we don't know if the lens that took that photo is the same as we will be getting on the shelves. It might still have experimental aperture blades or some elements might not be fully tweaked.
This sample photos is very encouraging.

robjmitchell · 01-11-2018, 11:25 AM

How good is 3D pop on the chain. This lens is looking like a non schizophrenic version of my beloved 43ltd.

awscreo · 01-11-2018, 11:30 AM

Heh, vibe suddenly became quite positive with few sample images released

it will be so hard to persuade my wife that I need this is my life, but I'll give it my best

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01-11-2018, 04:50 AM - 2 Likes	#2461
OoKU Pentaxian Join Date: Dec 2015 Posts: 740 Original Poster	?????????????K???????????HD PENTAX-D... - ????????? RICOH IMAGING \| Facebook ---------- Post added 01-11-18 at 05:08 AM ----------

01-11-2018, 05:32 AM	#2462
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,681	Lovely out-of-focus highlights! Having said that, does anyone else notice they're not perfectly circular? The edge of the lower left quarter of each highlight seems non-circular. Could simply be on the prototype, I suppose. Anyway, very minor... Overall, it looks great!

01-11-2018, 05:51 AM	#2463
blende8 Veteran Member Join Date: Feb 2007 Location: Bremen, Germany Photos: Albums Posts: 1,521	Originally posted by BigMackCam Lovely out-of-focus highlights! Having said that, does anyone else notice they're not perfectly circular? The edge of the lower left quarter of each highlight seems non-circular. The article says, it is taken with f2, so possibly we are seeing something of the aperture here?

01-11-2018, 06:23 AM	#2464
Winder Veteran Member Join Date: Apr 2010 Location: Tennessee Posts: 6,617	Originally posted by BigMackCam Lovely out-of-focus highlights! Having said that, does anyone else notice they're not perfectly circular? The edge of the lower left quarter of each highlight seems non-circular. Could simply be on the prototype, I suppose. Anyway, very minor... Overall, it looks great! 9 blade aperture

01-11-2018, 06:24 AM - 1 Like	#2465
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	No cat eye bokeh balls though, fairly round across the frame, pretty impressive!

01-11-2018, 06:27 AM	#2466
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,681	Originally posted by Winder 9 blade aperture Gotcha. I wonder why they didn't go for rounded blades (or maybe they did?)... Not that it really matters. Looks very good indeed

01-11-2018, 06:51 AM	#2467
JPT Pentaxian Join Date: Jan 2012 Location: Tokyo Photos: Gallery Posts: 2,821	Looks like the bokeh is fantastic and consistent. Uh-oh. Starting to want it now. The accompanying text repeats that it's planned to be available in spring, by the way. Sounds like it's still on schedule.

01-11-2018, 07:03 AM	#2468
Winder Veteran Member Join Date: Apr 2010 Location: Tennessee Posts: 6,617	Originally posted by BigMackCam Gotcha. I wonder why they didn't go for rounded blades (or maybe they did?)... Not that it really matters. Looks very good indeed The final version might have rounded blades. More important is that you don't see any Longitudinal chromatic aberration. I hope we see more tests shots soon... Screw that I want to see the lens soon.

01-11-2018, 07:04 AM	#2469
BigMackCam Digitiser of Film Join Date: Mar 2010 Location: North East of England Posts: 20,681	Originally posted by Winder More important is that you don't see any Longitudinal chromatic aberration. Agreed

01-11-2018, 09:57 AM	#2470
MMVIII Pentaxian Join Date: Mar 2008 Location: EU Posts: 1,121	Right, now this seems to become the one classic 85 1.8 short tele lens for lovely bokeh and all this stuff to be even desireable for me as a KP shooter with no intention to go larger. Thank you Ricoh, I thought of going the more cost sensitive way with this decision and you might ruin it.

01-11-2018, 10:33 AM	#2471
ogl Banned Join Date: Dec 2007 Location: Sankt Peterburg Photos: Gallery \| Albums Posts: 8,382	12 blades are better than 9

01-11-2018, 10:56 AM	#2472
MMVIII Pentaxian Join Date: Mar 2008 Location: EU Posts: 1,121	Originally posted by ogl 12 blades are better than 9 How can I understand that? Do you mean the image is okayish but could be better with a 12 blade design, or do you mean the imgage shows that the design is a fail, or you suggest they should go back to the drawing board and bring a better design? Uhoh!

01-11-2018, 11:01 AM	#2473
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	Originally posted by BigMackCam Having said that, does anyone else notice they're not perfectly circular? Probably due to distortion, coma and the shape of aperture blades. If that is f2, its actually pretty good in the centre, very few lenses have such nice circles slightly stopped down, especially in FF edges. My old M 50mm f1.7 has harsh star-hexagons between f2 and f3 and my other old normal lenses can be quite distorted in edges (even on APSC). And we don't know if the lens that took that photo is the same as we will be getting on the shelves. It might still have experimental aperture blades or some elements might not be fully tweaked. This sample photos is very encouraging.

01-11-2018, 11:25 AM	#2474
robjmitchell Veteran Member Join Date: Oct 2007 Location: Melbourne Aus Posts: 1,776	How good is 3D pop on the chain. This lens is looking like a non schizophrenic version of my beloved 43ltd.

01-11-2018, 11:30 AM	#2475
awscreo Veteran Member Join Date: May 2016 Photos: Gallery \| Albums Posts: 2,722	Heh, vibe suddenly became quite positive with few sample images released it will be so hard to persuade my wife that I need this is my life, but I'll give it my best