Would This Cause Moire...

tabl10s · 10-16-2012, 08:45 AM

in the IIs?

Attached Images

Nass · 10-16-2012, 09:13 AM

Doubt it, I don't think the detail is there. The way I understand moire is that you have to have patterns at sensel like repetition before it becomes especially apparent. Maybe someone can correct me on this.

JinDesu · 10-16-2012, 09:19 AM

Originally posted by Nass

Doubt it, I don't think the detail is there. The way I understand moire is that you have to have patterns at sensel like repetition before it becomes especially apparent. Maybe someone can correct me on this.

Rope like that is made up of very fine fiber twisted over and over and over. Here is a 100% crop from my Sigma 50 1.4 at F2:

As you can see - if the twines are fine and in a constant pattern, it could result in moire under certain circumstances.

Now, whether or not the k-5II is susceptible to such patterns, that's another story.

derekkite · 10-16-2012, 10:24 AM

I was looking at the back of a duck the other day through a 90mm tamron lens and the interaction between the ees focus screen pattern as i panned created a moire effect. The feather pattern is fine and repeated. It will be interesting to see what the k5IIs produces.

Pablom · 10-16-2012, 11:17 AM

you guys think the K-5 IIs should come with a warning regarding rope photography?

Nass · 10-16-2012, 11:32 AM

Originally posted by Pablom

you guys think the K-5 IIs should come with a warning regarding rope photography?

Absolutely. Duck photography too.

**Ex Finn.** · 10-16-2012, 03:05 PM

Originally posted by Pablom

you guys think the K-5 IIs should come with a warning regarding rope photography?

I believe it does come with a "blanket" warning, from Pentax website: "where camera settings, lens selection and shooting conditions are controlled to prevent moiré".

regor · 10-17-2012, 01:03 PM

Not likely.

kh1234567890 · 10-20-2012, 01:54 PM

The pattern has to be regular, at the right spacing and preferably contrasty. You'll be OK as long as you don't shoot architecture. Or small print

- https://www.pentaxforums.com/forums/pentax-dslr-discussion/201734-k5iis-worth...ml#post2140464

RonHendriks1966 · 10-21-2012, 02:24 AM

Ihad some moire issues with fabrics doing some shooting for a webshop. Mostley tops with a very fine pattern and some glance in the fabric. That would give some problems, but not the rope.

10-16-2012, 08:45 AM	#1
tabl10s Veteran Member Join Date: Jun 2011 Location: Sacramento(formerly from B'Ham, England). Posts: 1,424	Would This Cause Moire... in the IIs? Attached Images

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10-16-2012, 09:13 AM	#2
Nass Veteran Member Join Date: Aug 2009 Location: The British Isles Photos: Gallery Posts: 2,402	Doubt it, I don't think the detail is there. The way I understand moire is that you have to have patterns at sensel like repetition before it becomes especially apparent. Maybe someone can correct me on this.

10-16-2012, 09:19 AM	#3
JinDesu Veteran Member Join Date: Jun 2011 Location: New York City Photos: Gallery Posts: 5,638	Originally posted by Nass Doubt it, I don't think the detail is there. The way I understand moire is that you have to have patterns at sensel like repetition before it becomes especially apparent. Maybe someone can correct me on this. Rope like that is made up of very fine fiber twisted over and over and over. Here is a 100% crop from my Sigma 50 1.4 at F2: As you can see - if the twines are fine and in a constant pattern, it could result in moire under certain circumstances. Now, whether or not the k-5II is susceptible to such patterns, that's another story.

10-16-2012, 10:24 AM	#4
derekkite Pentaxian Join Date: Sep 2011 Location: Nelson B.C. Posts: 3,782	I was looking at the back of a duck the other day through a 90mm tamron lens and the interaction between the ees focus screen pattern as i panned created a moire effect. The feather pattern is fine and repeated. It will be interesting to see what the k5IIs produces.

10-16-2012, 11:17 AM	#5
Pablom Veteran Member Join Date: Feb 2010 Location: Usa Posts: 1,940	you guys think the K-5 IIs should come with a warning regarding rope photography?

10-16-2012, 11:32 AM	#6
Nass Veteran Member Join Date: Aug 2009 Location: The British Isles Photos: Gallery Posts: 2,402	Originally posted by Pablom you guys think the K-5 IIs should come with a warning regarding rope photography? Absolutely. Duck photography too.

10-16-2012, 03:05 PM	#7
Ex Finn. Site Supporter Join Date: Nov 2007 Location: Southern Maryland. Espoo. Kouvola. Photos: Gallery \| Albums Posts: 7,975	Originally posted by Pablom you guys think the K-5 IIs should come with a warning regarding rope photography? I believe it does come with a "blanket" warning, from Pentax website: "where camera settings, lens selection and shooting conditions are controlled to prevent moiré".

10-17-2012, 01:03 PM	#8
regor Veteran Member Join Date: Jan 2009 Location: Victoria, BC Photos: Gallery \| Albums Posts: 356	Not likely.

10-20-2012, 01:54 PM	#9
kh1234567890 Veteran Member Join Date: Sep 2010 Location: Manchester, UK Photos: Gallery Posts: 2,653	The pattern has to be regular, at the right spacing and preferably contrasty. You'll be OK as long as you don't shoot architecture. Or small print - https://www.pentaxforums.com/forums/pentax-dslr-discussion/201734-k5iis-worth...ml#post2140464

10-21-2012, 02:24 AM	#10
RonHendriks1966 Banned Join Date: Jan 2009 Photos: Gallery Posts: 9,675	Ihad some moire issues with fabrics doing some shooting for a webshop. Mostley tops with a very fine pattern and some glance in the fabric. That would give some problems, but not the rope.