Kiwi Pentaxians

Class A · 11-07-2018, 01:57 AM

Originally posted by GUB

Do you get the same result if you set the same settings as I did?

With one browser, I get the same horizontal line in the magenta/pink area as you do, but not the differently coloured areas in the cyan/blue patch.

With another browser (Firefox), I don't get any artefacts at all.

Interestingly, the two different browsers render the noise differently as well. My first guess would have been different scaling approaches, but with these images, there shouldn't be any scaling involved. Perhaps there is (see below). My next guess would be a difference in colour management. The artefacts in the K-1 samples are very weird, though. I very much doubt they have anything to do with the camera.

If you right-click on the K-1 patches with artefacts and select "View Image" you'll probably see an artefact-free version of the patch. The resulting framing doesn't quite make sense to me, but the patches seem clean then.

**GUB** · 11-07-2018, 02:48 AM

Originally posted by Class A

With one browser, I get the same horizontal line in the magenta/pink area as you do, but not the differently coloured areas in the cyan/blue patch.

With another browser (Firefox), I don't get any artefacts at all.

Interestingly, the two different browsers render the noise differently as well. My first guess would have been different scaling approaches, but with these images, there shouldn't be any scaling involved. Perhaps there is (see below). My next guess would be a difference in colour management. The artefacts in the K-1 samples are very weird, though. I very much doubt they have anything to do with the camera.

If you right-click on the K-1 patches with artefacts and select "View Image" you'll probably see an artefact-free version of the patch. The resulting framing doesn't quite make sense to me, but the patches seem clean then.

Good not just me then. Save some screenshots too- could be an interesting archive if someone starts start querying. I can't see how it is a browser or colour space issue coz it doesn't show in the +2EV or less samples.

**zkarj** · 11-08-2018, 04:44 PM - **1 Like**

Originally posted by GUB

Good not just me then. Save some screenshots too- could be an interesting archive if someone starts start querying. I can't see how it is a browser or colour space issue coz it doesn't show in the +2EV or less samples.

The browser viewport size might have an influence. I've built sites that have had interesting bugs only at very specific size ranges. Try grabbing the corner of the browser and changing the size while observing the issue.

**GUB** · 11-08-2018, 09:52 PM

Originally posted by zkarj

The browser viewport size might have an influence. I've built sites that have had interesting bugs only at very specific size ranges. Try grabbing the corner of the browser and changing the size while observing the issue.

Naa good idea tho. tried chanzing the size of the window and also zoomed in and the artifact stayed there rock solid. I have played around with it a few times now and got it to appear on the d810, d850, k1 and k1mkii but never on the shiny new z7.

Class A · 11-09-2018, 02:13 AM

Originally posted by GUB

I have played around with it a few times now and got it to appear on the d810, d850, k1 and k1mkii but never on the shiny new z7.

The "mirrorless difference"!

**GUB** · 11-09-2018, 03:50 AM

Yeah. And given the way I use my K1 with the LCD viewfinder on LV I should be rushing off to get one. But what an uninspiring result in the Dynamic Range and Iso Invariance. I am sorry Richard but I suspect the Z7 is proof that good video has the potential to compromise still IQ.

richandfleur · 11-12-2018, 12:33 AM - **5 Likes**

6am in Wanganui on Sunday, as pipers played Battle's O'er to mark the 100th anniversary of the First World War ending.
They joined Armistice day commemorations with bagpipes being played at more than 2,000 locations worldwide.

**GUB** · 11-12-2018, 01:41 AM

Stunning Richard. The lights are not yellow so I presume you have desaturated it. A really fitting result. The Sargent Gallery and those steps are one of the few bits of vision in this city. Lets hope they don't ruin it in the upgrede.

richandfleur · 11-12-2018, 02:12 AM

Originally posted by GUB

Stunning Richard. The lights are not yellow so I presume you have desaturated it. A really fitting result. The Sargent Gallery and those steps are one of the few bits of vision in this city. Lets hope they don't ruin it in the upgrede.

Got caught up with the hall seismic upgrade work and safety fencing on the forecourt, so couldn’t get exactly square on.

Was a fitting location for the event for sure.

Transit · 11-18-2018, 12:00 PM

Great image Richard !

Kiwi645hauler · 11-22-2018, 03:03 PM

woohoo, just purchased a couple of 35mm FA pentax lenses, and got an MZ-50 body thrown in, although, i am on the hunt for a better body, something like an MZ-5n, MZ-3 or MZ-6 ... I had thought about an MZ-S, but they are starting to go for a $500+ again on ebay. IF any one of my fellow Kiwi Pentaxian's knows of or has one of those they are willing to part with, i could be interested...

richandfleur · 11-22-2018, 05:10 PM - **2 Likes**

A few more recent images:

Kiwizinho · 11-22-2018, 05:23 PM

Originally posted by richandfleur

A few more recent images:

What a novelty for a photography forum. Someone actually posting images...

Very nice. I guess I should do likewise.

Kiwi645hauler · 11-22-2018, 05:33 PM

Originally posted by Kiwizinho

What a novelty for a photography forum. Someone actually posting images...

Very nice. I guess I should do likewise.

I should do the same, but i need to do some re-sizing... my 645 scans are 20,000 pixels on the longest side

Kiwizinho · 11-22-2018, 07:00 PM

Blenheim doesn't just grow grapes. We have some rather nice native sun orchids on the hills behind the town too. Taken with my Sigma 17-70.

---------- Post added 11-23-18 at 03:02 PM ----------

Originally posted by Kiwi110Auto

I should do the same, but i need to do some re-sizing... my 645 scans are 20,000 pixels on the longest side

At full res I think you'd need something like Google Maps technology to break them up into tiles so they can load in chunks as you scroll around.

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11-07-2018, 01:57 AM	#15466
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251 Original Poster	Originally posted by GUB Do you get the same result if you set the same settings as I did? With one browser, I get the same horizontal line in the magenta/pink area as you do, but not the differently coloured areas in the cyan/blue patch. With another browser (Firefox), I don't get any artefacts at all. Interestingly, the two different browsers render the noise differently as well. My first guess would have been different scaling approaches, but with these images, there shouldn't be any scaling involved. Perhaps there is (see below). My next guess would be a difference in colour management. The artefacts in the K-1 samples are very weird, though. I very much doubt they have anything to do with the camera. If you right-click on the K-1 patches with artefacts and select "View Image" you'll probably see an artefact-free version of the patch. The resulting framing doesn't quite make sense to me, but the patches seem clean then.

11-07-2018, 02:48 AM	#15467
GUB Loyal Site Supporter Join Date: Aug 2012 Location: Wanganui Photos: Gallery \| Albums Posts: 5,760	Originally posted by Class A With one browser, I get the same horizontal line in the magenta/pink area as you do, but not the differently coloured areas in the cyan/blue patch. With another browser (Firefox), I don't get any artefacts at all. Interestingly, the two different browsers render the noise differently as well. My first guess would have been different scaling approaches, but with these images, there shouldn't be any scaling involved. Perhaps there is (see below). My next guess would be a difference in colour management. The artefacts in the K-1 samples are very weird, though. I very much doubt they have anything to do with the camera. If you right-click on the K-1 patches with artefacts and select "View Image" you'll probably see an artefact-free version of the patch. The resulting framing doesn't quite make sense to me, but the patches seem clean then. Good not just me then. Save some screenshots too- could be an interesting archive if someone starts start querying. I can't see how it is a browser or colour space issue coz it doesn't show in the +2EV or less samples.

11-08-2018, 04:44 PM - 1 Like	#15468
zkarj Site Supporter Join Date: Jan 2009 Location: Wellington Posts: 1,291	Originally posted by GUB Good not just me then. Save some screenshots too- could be an interesting archive if someone starts start querying. I can't see how it is a browser or colour space issue coz it doesn't show in the +2EV or less samples. The browser viewport size might have an influence. I've built sites that have had interesting bugs only at very specific size ranges. Try grabbing the corner of the browser and changing the size while observing the issue.

11-08-2018, 09:52 PM	#15469
GUB Loyal Site Supporter Join Date: Aug 2012 Location: Wanganui Photos: Gallery \| Albums Posts: 5,760	Originally posted by zkarj The browser viewport size might have an influence. I've built sites that have had interesting bugs only at very specific size ranges. Try grabbing the corner of the browser and changing the size while observing the issue. Naa good idea tho. tried chanzing the size of the window and also zoomed in and the artifact stayed there rock solid. I have played around with it a few times now and got it to appear on the d810, d850, k1 and k1mkii but never on the shiny new z7.

11-09-2018, 02:13 AM	#15470
Class A Pentaxian Join Date: Aug 2008 Location: Wellington, New Zealand Posts: 11,251 Original Poster	Originally posted by GUB I have played around with it a few times now and got it to appear on the d810, d850, k1 and k1mkii but never on the shiny new z7. The "mirrorless difference"!

11-09-2018, 03:50 AM	#15471
GUB Loyal Site Supporter Join Date: Aug 2012 Location: Wanganui Photos: Gallery \| Albums Posts: 5,760	Yeah. And given the way I use my K1 with the LCD viewfinder on LV I should be rushing off to get one. But what an uninspiring result in the Dynamic Range and Iso Invariance. I am sorry Richard but I suspect the Z7 is proof that good video has the potential to compromise still IQ.

11-12-2018, 12:33 AM - 5 Likes	#15472
richandfleur Pentaxian Join Date: Mar 2014 Location: Palmerston North, New Zealand Photos: Albums Posts: 1,788	6am in Wanganui on Sunday, as pipers played Battle's O'er to mark the 100th anniversary of the First World War ending. They joined Armistice day commemorations with bagpipes being played at more than 2,000 locations worldwide.

11-12-2018, 01:41 AM	#15473
GUB Loyal Site Supporter Join Date: Aug 2012 Location: Wanganui Photos: Gallery \| Albums Posts: 5,760	Stunning Richard. The lights are not yellow so I presume you have desaturated it. A really fitting result. The Sargent Gallery and those steps are one of the few bits of vision in this city. Lets hope they don't ruin it in the upgrede.

11-12-2018, 02:12 AM	#15474
richandfleur Pentaxian Join Date: Mar 2014 Location: Palmerston North, New Zealand Photos: Albums Posts: 1,788	Originally posted by GUB Stunning Richard. The lights are not yellow so I presume you have desaturated it. A really fitting result. The Sargent Gallery and those steps are one of the few bits of vision in this city. Lets hope they don't ruin it in the upgrede. Got caught up with the hall seismic upgrade work and safety fencing on the forecourt, so couldn’t get exactly square on. Was a fitting location for the event for sure.

11-18-2018, 12:00 PM	#15475
Transit Pentaxian Join Date: Aug 2007 Location: Whanganui NZ Photos: Gallery \| Albums Posts: 4,624	Great image Richard !

11-22-2018, 03:03 PM	#15476
Kiwi645hauler Veteran Member Join Date: Mar 2016 Location: Dunedin Posts: 394	woohoo, just purchased a couple of 35mm FA pentax lenses, and got an MZ-50 body thrown in, although, i am on the hunt for a better body, something like an MZ-5n, MZ-3 or MZ-6 ... I had thought about an MZ-S, but they are starting to go for a $500+ again on ebay. IF any one of my fellow Kiwi Pentaxian's knows of or has one of those they are willing to part with, i could be interested...

11-22-2018, 05:10 PM - 2 Likes	#15477
richandfleur Pentaxian Join Date: Mar 2014 Location: Palmerston North, New Zealand Photos: Albums Posts: 1,788	A few more recent images:

11-22-2018, 05:23 PM	#15478
Kiwizinho Pentaxian Join Date: Dec 2012 Location: Blenheim Photos: Gallery Posts: 1,295	Originally posted by richandfleur A few more recent images: What a novelty for a photography forum. Someone actually posting images... Very nice. I guess I should do likewise.

11-22-2018, 05:33 PM	#15479
Kiwi645hauler Veteran Member Join Date: Mar 2016 Location: Dunedin Posts: 394	Originally posted by Kiwizinho What a novelty for a photography forum. Someone actually posting images... Very nice. I guess I should do likewise. I should do the same, but i need to do some re-sizing... my 645 scans are 20,000 pixels on the longest side

11-22-2018, 07:00 PM	#15480
Kiwizinho Pentaxian Join Date: Dec 2012 Location: Blenheim Photos: Gallery Posts: 1,295	Blenheim doesn't just grow grapes. We have some rather nice native sun orchids on the hills behind the town too. Taken with my Sigma 17-70. ---------- Post added 11-23-18 at 03:02 PM ---------- Originally posted by Kiwi110Auto I should do the same, but i need to do some re-sizing... my 645 scans are 20,000 pixels on the longest side At full res I think you'd need something like Google Maps technology to break them up into tiles so they can load in chunks as you scroll around.