K-r successor: K30

eddie1960 · 03-21-2012, 12:06 PM

Originally posted by gazonk

Hmm, I actually think most quality Pentax lenses peak at f/5.6.

I quickly glanced through photozone.de tests of my most used lenses:

DA35 Ltd: Best at 5.6
DA70 Ltd: Best at 4-5.6
DA16-45: Best at 5.6, but very close to that at 4
DA55-300: Best at 8

(In addition, the FA31 and the DA35/2.5 peak at 4)

then we should be good for 50MP minimum before it's a major issue (for people using low end lenses they won't notice the difference anyway

)

bobell69 · 03-21-2012, 12:20 PM - **1 Like**

I'd like mine in black, black, black, black, black, black and with a black battery door. Thanks.

Clavius · 03-21-2012, 12:21 PM

Originally posted by bobell69

I'd like mine in black, black, black, black, black, black and with a black battery door. Thanks.

+1

With a blacklight top LCD backlight? Wow, that would be cool.

**jpzk** · 03-21-2012, 05:06 PM

Originally posted by JanG

Just a remark concerning the name: If the name should be K-z the cam surely has to be renamed for the German speaking markets and Israel as KZ is the all too well known modern abbreviation for the German word Konzentrationslager (concentration camp). The Nazis themselves used the more stringent abbreviation KL. And would anybody from the USA or where ever visit Israel with the letters KZ or KL on the cam? (Better you don't.) - I very much hope for Pentax that the cam is not called K-z!

Just another remark on top of yours, Jan:

I have a Zeiss T*planar 85/4 ZK (bold/underline added)
and it is therefore possible that they have also thought of making sure the lens would not be a "KZ" lens !

Cheers.

magkelly · 03-21-2012, 05:12 PM

Originally posted by falconeye

Did I mention that the viral marketing campaigns by Pentax start to become annoying?

Better its annoying than nonexistent. If more colors leads to more sales then I am all for it. Sheeze, some of you all make me laugh. Pentax can't ever win with you guys. If they don't advertize you gripe. If they do advertize you gripe. If they only offer 3 colors people always seem to want more but if they do oh it's just too tacky of them. Me, I'm just happy to see an ad or two for Pentax no matter how many freakin colors they make. Viral marketing, multiple colors=bigger sales guys, THINK ABOUT IT.

**monochrome** · 03-21-2012, 06:06 PM

Originally posted by magkelly

Better its annoying than nonexistent. If more colors leads to more sales then I am all for it. Sheeze, some of you all make me laugh. Pentax can't ever win with you guys. If they don't advertize you gripe. If they do advertize you gripe. If they only offer 3 colors people always seem to want more but if they do oh it's just too tacky of them. Me, I'm just happy to see an ad or two for Pentax no matter how many freakin colors they make. Viral marketing, multiple colors=bigger sales guys, THINK ABOUT IT.

K-01=bigger sales guys, THINK ABOUT IT.

bobmaxja · 03-21-2012, 06:32 PM

K-S is next letter after K-R

falconeye · 03-21-2012, 07:14 PM

Originally posted by RXrenesis8

16....3.....12
11....6.....25
8.....12....50

This table oversimplifies a bit.

The easiest rule of thumb is that the resolution limit is at N/3 micron pixel sizes where N is the F-stop. So, for a 5 micron pixel sensor (K-5, D800), the limit would be hit at F/15. I.e., you need a diffraction limited lens at F/15 or better. This is quite a bit more optimistic than the table above.

However, you see a significant impact up to N/1.5 micron pixel sizes. Where micro contrast is weakened (by 50% or more) but not destroyed. That's a region to be avoided but not the limit. For 5 micron pixels, it means to better stay below F/8.

The very best SLR lenses peak at F/2.8 in the center, but F/4 is considered excellent too. Many lenses peak at F/8 in the corners though. The lesser lenses peak at F/8 even in the center.

But this entire discussion is meaningless. APSC SLRs have other problems which will prevent to exploit the full lens resolutions. Like defocus blur and shake. E.g., consider the 1/f shutter rule, meaning that a 50mm lens causes 30 microns blur (the coc) at 1/50s. So, if you want to eliminate shake with 3 microns pixels, you need 1/500s shutter speeds. Of course, an SR helps, but will it freeze your subject? So, what you need then is more light. APSC has resolution limits which aren't defined by the lens.

bossa · 03-21-2012, 08:44 PM

I have come across photographs of the new top secret Pentax production facility. Notice the multiple product lines in all their colourful glory.

Warpig · 03-21-2012, 09:31 PM

Originally posted by bobmaxja

K-S is next letter after K-R

Yeah, but they've been very random: K-m, K-x, K-r, K-....

Anyway, I couldn't care less for the name. They almost always came with a surprise. When everyone was expecting the MZ-D, they came with the *ist D. After the K10D, then the K20D, the obvious was to expect a K30D, but, voilà!, they remove de "D" and add a single number. Resuming the later flagship models, we got 2 similar names (K10D, K20D). Then 2 more similar names (K7, K5, now lowering numbers). So, I doubt the next flagship will be a K-3. If I'm wrong, I'll buy you a round of beers

obsidiana · 03-21-2012, 10:30 PM

K-r came after K-x, so, would we expect a "regressive" letter?
xwvutsr
with that logic, it might be K-l?
I don't think so

magkelly · 03-21-2012, 11:14 PM

Originally posted by monochrome

K-01=bigger sales guys, THINK ABOUT IT.

Uh, I don't know. As much as I hope it sells for Pentax's sake I'm really trying hard NOT to think about that ugly thing.....

magkelly · 03-21-2012, 11:15 PM

Originally posted by bossa

I have come across photographs of the new top secret Pentax production facility. Notice the multiple product lines in all their colourful glory.

Oh my gosh is that a Barney keychain? How droll....

bossa · 03-22-2012, 01:08 AM

Originally posted by magkelly

Oh my gosh is that a Barney keychain? How droll....

It's the new Pentax "disguised by" line of products that look like anything you want and come in every colour of the rainbow.

Guakala · 03-22-2012, 05:52 PM

I'm still waiting on the K300D

03-21-2012, 07:14 PM	#143
falconeye Veteran Member Join Date: Jan 2008 Location: Munich, Alps, Germany Photos: Gallery Posts: 6,871	Originally posted by RXrenesis8 16....3.....12 11....6.....25 8.....12....50 This table oversimplifies a bit. The easiest rule of thumb is that the resolution limit is at N/3 micron pixel sizes where N is the F-stop. So, for a 5 micron pixel sensor (K-5, D800), the limit would be hit at F/15. I.e., you need a diffraction limited lens at F/15 or better. This is quite a bit more optimistic than the table above. However, you see a significant impact up to N/1.5 micron pixel sizes. Where micro contrast is weakened (by 50% or more) but not destroyed. That's a region to be avoided but not the limit. For 5 micron pixels, it means to better stay below F/8. The very best SLR lenses peak at F/2.8 in the center, but F/4 is considered excellent too. Many lenses peak at F/8 in the corners though. The lesser lenses peak at F/8 even in the center. But this entire discussion is meaningless. APSC SLRs have other problems which will prevent to exploit the full lens resolutions. Like defocus blur and shake. E.g., consider the 1/f shutter rule, meaning that a 50mm lens causes 30 microns blur (the coc) at 1/50s. So, if you want to eliminate shake with 3 microns pixels, you need 1/500s shutter speeds. Of course, an SR helps, but will it freeze your subject? So, what you need then is more light. APSC has resolution limits which aren't defined by the lens. Last edited by falconeye; 03-21-2012 at 07:24 PM.

03-21-2012, 08:44 PM	#144
bossa Veteran Member Join Date: Jul 2011 Location: Adelaide Posts: 4,546	Top Secret Pentax pic's. I have come across photographs of the new top secret Pentax production facility. Notice the multiple product lines in all their colourful glory. Last edited by bossa; 03-21-2012 at 09:04 PM.

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03-21-2012, 12:06 PM	#136
eddie1960 Veteran Member Join Date: Aug 2010 Location: Toronto Photos: Gallery \| Albums Posts: 13,666	Originally posted by gazonk Hmm, I actually think most quality Pentax lenses peak at f/5.6. I quickly glanced through photozone.de tests of my most used lenses: DA35 Ltd: Best at 5.6 DA70 Ltd: Best at 4-5.6 DA16-45: Best at 5.6, but very close to that at 4 DA55-300: Best at 8 (In addition, the FA31 and the DA35/2.5 peak at 4) then we should be good for 50MP minimum before it's a major issue (for people using low end lenses they won't notice the difference anyway )

03-21-2012, 12:20 PM - 1 Like	#137
bobell69 Veteran Member Join Date: Sep 2007 Location: Courtenay BC Photos: Gallery \| Albums Posts: 498	I'd like mine in black, black, black, black, black, black and with a black battery door. Thanks.

03-21-2012, 12:21 PM	#138
Clavius Veteran Member Join Date: Feb 2011 Location: De Klundert Photos: Gallery Posts: 4,150	Originally posted by bobell69 I'd like mine in black, black, black, black, black, black and with a black battery door. Thanks. +1 With a blacklight top LCD backlight? Wow, that would be cool.

03-21-2012, 05:06 PM	#139
jpzk Site Supporter Join Date: Jan 2009 Location: Québec Photos: Gallery \| Albums Posts: 8,251	Originally posted by JanG Just a remark concerning the name: If the name should be K-z the cam surely has to be renamed for the German speaking markets and Israel as KZ is the all too well known modern abbreviation for the German word Konzentrationslager (concentration camp). The Nazis themselves used the more stringent abbreviation KL. And would anybody from the USA or where ever visit Israel with the letters KZ or KL on the cam? (Better you don't.) - I very much hope for Pentax that the cam is not called K-z! Just another remark on top of yours, Jan: I have a Zeiss T*planar 85/4 ZK (bold/underline added) and it is therefore possible that they have also thought of making sure the lens would not be a "KZ" lens ! Cheers.

03-21-2012, 05:12 PM	#140
magkelly Veteran Member Join Date: May 2010 Photos: Gallery Posts: 5,901	Originally posted by falconeye Did I mention that the viral marketing campaigns by Pentax start to become annoying? Better its annoying than nonexistent. If more colors leads to more sales then I am all for it. Sheeze, some of you all make me laugh. Pentax can't ever win with you guys. If they don't advertize you gripe. If they do advertize you gripe. If they only offer 3 colors people always seem to want more but if they do oh it's just too tacky of them. Me, I'm just happy to see an ad or two for Pentax no matter how many freakin colors they make. Viral marketing, multiple colors=bigger sales guys, THINK ABOUT IT.

03-21-2012, 06:06 PM	#141
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Originally posted by magkelly Better its annoying than nonexistent. If more colors leads to more sales then I am all for it. Sheeze, some of you all make me laugh. Pentax can't ever win with you guys. If they don't advertize you gripe. If they do advertize you gripe. If they only offer 3 colors people always seem to want more but if they do oh it's just too tacky of them. Me, I'm just happy to see an ad or two for Pentax no matter how many freakin colors they make. Viral marketing, multiple colors=bigger sales guys, THINK ABOUT IT. K-01=bigger sales guys, THINK ABOUT IT.

03-21-2012, 06:32 PM	#142
bobmaxja Veteran Member Join Date: Mar 2010 Location: Laval, Quebec Canada Posts: 2,171	K-S is next letter after K-R

03-21-2012, 09:31 PM	#145
Warpig Forum Member Join Date: Sep 2010 Location: Temuco, Chile Posts: 53	Originally posted by bobmaxja K-S is next letter after K-R Yeah, but they've been very random: K-m, K-x, K-r, K-.... Anyway, I couldn't care less for the name. They almost always came with a surprise. When everyone was expecting the MZ-D, they came with the *ist D. After the K10D, then the K20D, the obvious was to expect a K30D, but, voilà!, they remove de "D" and add a single number. Resuming the later flagship models, we got 2 similar names (K10D, K20D). Then 2 more similar names (K7, K5, now lowering numbers). So, I doubt the next flagship will be a K-3. If I'm wrong, I'll buy you a round of beers

03-21-2012, 10:30 PM	#146
obsidiana New Member Join Date: Nov 2010 Location: Mexico City Photos: Gallery Posts: 3	K-r came after K-x, so, would we expect a "regressive" letter? xwvutsr with that logic, it might be K-l? I don't think so

03-21-2012, 11:14 PM	#147
magkelly Veteran Member Join Date: May 2010 Photos: Gallery Posts: 5,901	Originally posted by monochrome K-01=bigger sales guys, THINK ABOUT IT. Uh, I don't know. As much as I hope it sells for Pentax's sake I'm really trying hard NOT to think about that ugly thing.....

03-21-2012, 11:15 PM	#148
magkelly Veteran Member Join Date: May 2010 Photos: Gallery Posts: 5,901	Originally posted by bossa I have come across photographs of the new top secret Pentax production facility. Notice the multiple product lines in all their colourful glory. Oh my gosh is that a Barney keychain? How droll....

03-22-2012, 01:08 AM	#149
bossa Veteran Member Join Date: Jul 2011 Location: Adelaide Posts: 4,546	Originally posted by magkelly Oh my gosh is that a Barney keychain? How droll.... It's the new Pentax "disguised by" line of products that look like anything you want and come in every colour of the rainbow.

03-22-2012, 05:52 PM	#150
Guakala Senior Member Join Date: Dec 2009 Location: Boston, MA Posts: 158	I'm still waiting on the K300D