DxO finally published the 645z review....

**interested_observer** · 11-14-2017, 07:13 PM

Pentax 645Z: A great choice for medium-format shooters - DxOMark

MarkJerling · 11-14-2017, 09:14 PM

Well that's very much a case of "Better late than never"!

leekil · 11-14-2017, 09:27 PM

**kiwi_jono** · 11-14-2017, 09:28 PM

Yes its good that they have finally released the review!

The DXO measurements are just part of the the story, of course, but the K-1 graphs actually stack up pretty well against the 645Z (but the extra resolution obviously gives the Z an advantage).

**Digitalis** · 11-14-2017, 09:56 PM - **2 Likes**

Apparently DxO doesn't do Medium format camera reviews, they said it was against their policy to publish medium format reviews.

All this proves is exactly how shady things are at DxO - and gives me even more reasons to distrust them.

paulster · 11-14-2017, 11:30 PM - **1 Like**

Yeah, it's remarkable that they'd written the review back in the day, but decided not the cover MF and therefore suppress the results for no good reason until they managed to surpass it with something from one of the brands they've espoused previously.

In my opinion I think they are full of crap and are beholden to their sponsors.

biz-engineer · 11-15-2017, 12:17 AM - **1 Like**

Originally posted by Digitalis

All this proves is exactly how shady things are at DxO - and gives me even more reasons to distrust them.

Hassy soaked the Sony sensors in oak barrels for a few years, Pentax used the sensors right after the fermentation process was finished. That explains why Hassy gets the better score.
If you are a red wine amateur, you'll understand what I mean. As a matter of fact, DXO is located in France, the country of red wine. Doesn't it make sense?

6BQ5 · 11-15-2017, 12:45 AM - **1 Like**

I bet the DXO team thought we would simply forget and the "noise" would die down on its own. Then they published the Hassy review and the noise amplified while their credibility sank. Phooey on them. They waited for something to come along that would beat the 645Z before publishing this thin review.

dafbp · 11-15-2017, 01:15 AM - **1 Like**

It's telling that the Pentax came out around 2 years earlier (and you can find several tests at around that time), yet they only publish the review around 2 1/2 years after launch, for a camera that shook the status quo.

**Rondec** · 11-15-2017, 03:58 AM

Originally posted by biz-engineer

Hassy soaked the Sony sensors in oak barrels for a few years, Pentax used the sensors right after the fermentation process was finished. That explains why Hassy gets the better score.
If you are a red wine amateur, you'll understand what I mean. As a matter of fact, DXO is located in France, the country of red wine. Doesn't it make sense?

The difference in scores (101 versus 102) and the break down of those scores (DR 14.7 versus 14.8, sports iso 4489 versus 4505, color depth 26.0 versus 26.2) have to be within the error range of their testing or even sample variation. If you measured three 645zs, you probably would get slightly different scores but to me, these are testing the same even if the absolute numbers give a very slight edge to the Hasselblad.

**BarryE** · 11-15-2017, 04:04 AM - **1 Like**

Can't help reading this as:

Hasselblad, which is expensive like the Pentax, performs very well, but so it should with the price and sensor size. But, hey look at this Nikon. It's less than half the price. Is FF, with all it's 'advantages' and the difference in performance is basically the same as the two medium formats. Time to dust off the Pentax review now we can promote a Nikon. Personally, I wish DXoMark would just be honest with their motivations ...

**Digitalis** · 11-15-2017, 05:50 AM - **1 Like**

Originally posted by biz-engineer

If you are a red wine amateur, you'll understand what I mean. As a matter of fact, DXO is located in France, the country of red wine.

IMO the only good drink that comes from France is Cognac. I grew up in the Barossa valley, one of the best wine growing areas in Australia - and I hate wine.

**clickclick** · 11-15-2017, 08:10 AM

This really does play into the conspiracy theory mindset - hey, we just reviewed a camera that blows all our sponsor's competition out of the water - better not publish the results until one of those sponsors comes out with something "better". Back to if it walks like a duck, talks like a duck, looks like a duck....

leekil · 11-15-2017, 10:09 AM

Originally posted by kiwi_jono

The DXO measurements are just part of the the story, of course, but the K-1 graphs actually stack up pretty well against the 645Z (but the extra resolution obviously gives the Z an advantage).

They mentioned something like this in the review, commenting on how the Nikon 850 was pretty close to the 645Z, due to the sensor advances in the intervening 3 years since the 645Z came out.

Zav · 11-15-2017, 12:26 PM - **1 Like**

Originally posted by Digitalis

IMO the only good drink that comes from France is Cognac. I grew up in the Barossa valley, one of the best wine growing areas in Australia - and I hate wine.

You don't know Orangina! :-)

11-14-2017, 07:13 PM	#1
interested_observer Loyal Site Supporter Join Date: Jun 2009 Location: Tumbleweed, Arizona Photos: Gallery \| Albums Posts: 5,707	DxO finally published the 645z review.... Pentax 645Z: A great choice for medium-format shooters - DxOMark

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
DXO RAW converter (Otherwise known as DXO Optics 10)	pleitzxcan	Pentax K-1 & K-1 II	13	09-21-2016 10:01 PM
DXO Optics (Now DXO 11) Raw Converter Mea Culpa	pleitzxcan	Pentax K-1 & K-1 II	6	06-05-2016 05:45 PM
DxO are discounting DxO Optics Pro again	rawr	Digital Processing, Software, and Printing	4	11-09-2011 01:00 PM
DXO are discounting DXO Optics Pro again until 14 June	rawr	Digital Processing, Software, and Printing	17	06-25-2011 07:52 AM
DXO are giving 30% off DXO Optics Pro until Dec 25	rawr	Digital Processing, Software, and Printing	13	11-11-2010 01:22 PM

11-14-2017, 09:14 PM	#2
MarkJerling Moderator Site Supporter Join Date: May 2012 Location: Wairarapa, New Zealand Photos: Gallery \| Albums Posts: 20,406	Well that's very much a case of "Better late than never"!

11-14-2017, 09:27 PM	#3
leekil Pentaxian Join Date: May 2016 Photos: Albums Posts: 2,003

11-14-2017, 09:28 PM	#4
kiwi_jono Loyal Site Supporter Join Date: Dec 2009 Location: Christchurch, New Zealand Photos: Gallery \| Albums Posts: 2,437	Yes its good that they have finally released the review! The DXO measurements are just part of the the story, of course, but the K-1 graphs actually stack up pretty well against the 645Z (but the extra resolution obviously gives the Z an advantage).

11-14-2017, 09:56 PM - 2 Likes	#5
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Apparently DxO doesn't do Medium format camera reviews, they said it was against their policy to publish medium format reviews. All this proves is exactly how shady things are at DxO - and gives me even more reasons to distrust them.

11-14-2017, 11:30 PM - 1 Like	#6
paulster Senior Member Join Date: Apr 2016 Location: Los Angeles Posts: 159	Yeah, it's remarkable that they'd written the review back in the day, but decided not the cover MF and therefore suppress the results for no good reason until they managed to surpass it with something from one of the brands they've espoused previously. In my opinion I think they are full of crap and are beholden to their sponsors.

11-15-2017, 12:17 AM - 1 Like	#7
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,231	Originally posted by Digitalis All this proves is exactly how shady things are at DxO - and gives me even more reasons to distrust them. Hassy soaked the Sony sensors in oak barrels for a few years, Pentax used the sensors right after the fermentation process was finished. That explains why Hassy gets the better score. If you are a red wine amateur, you'll understand what I mean. As a matter of fact, DXO is located in France, the country of red wine. Doesn't it make sense?

11-15-2017, 12:45 AM - 1 Like	#8
6BQ5 Veteran Member Join Date: Jun 2013 Location: Nevada, USA Photos: Albums Posts: 3,348	I bet the DXO team thought we would simply forget and the "noise" would die down on its own. Then they published the Hassy review and the noise amplified while their credibility sank. Phooey on them. They waited for something to come along that would beat the 645Z before publishing this thin review.

11-15-2017, 01:15 AM - 1 Like	#9
dafbp Senior Member Join Date: Jan 2015 Posts: 233	It's telling that the Pentax came out around 2 years earlier (and you can find several tests at around that time), yet they only publish the review around 2 1/2 years after launch, for a camera that shook the status quo.

11-15-2017, 03:58 AM	#10
Rondec Loyal Site Supporter Join Date: Mar 2009 Location: Gladys, Virginia Photos: Gallery Posts: 27,652	Originally posted by biz-engineer Hassy soaked the Sony sensors in oak barrels for a few years, Pentax used the sensors right after the fermentation process was finished. That explains why Hassy gets the better score. If you are a red wine amateur, you'll understand what I mean. As a matter of fact, DXO is located in France, the country of red wine. Doesn't it make sense? The difference in scores (101 versus 102) and the break down of those scores (DR 14.7 versus 14.8, sports iso 4489 versus 4505, color depth 26.0 versus 26.2) have to be within the error range of their testing or even sample variation. If you measured three 645zs, you probably would get slightly different scores but to me, these are testing the same even if the absolute numbers give a very slight edge to the Hasselblad.

11-15-2017, 04:04 AM - 1 Like	#11
BarryE Site Supporter Join Date: Jan 2013 Location: Hampshire, UK Posts: 1,653	Can't help reading this as: Hasselblad, which is expensive like the Pentax, performs very well, but so it should with the price and sensor size. But, hey look at this Nikon. It's less than half the price. Is FF, with all it's 'advantages' and the difference in performance is basically the same as the two medium formats. Time to dust off the Pentax review now we can promote a Nikon. Personally, I wish DXoMark would just be honest with their motivations ...

11-15-2017, 05:50 AM - 1 Like	#12
Digitalis Site Supporter Join Date: Mar 2009 Location: Melbourne, Victoria Photos: Gallery Posts: 11,694	Originally posted by biz-engineer If you are a red wine amateur, you'll understand what I mean. As a matter of fact, DXO is located in France, the country of red wine. IMO the only good drink that comes from France is Cognac. I grew up in the Barossa valley, one of the best wine growing areas in Australia - and I hate wine.

11-15-2017, 08:10 AM	#13
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,903	This really does play into the conspiracy theory mindset - hey, we just reviewed a camera that blows all our sponsor's competition out of the water - better not publish the results until one of those sponsors comes out with something "better". Back to if it walks like a duck, talks like a duck, looks like a duck....

11-15-2017, 10:09 AM	#14
leekil Pentaxian Join Date: May 2016 Photos: Albums Posts: 2,003	Originally posted by kiwi_jono The DXO measurements are just part of the the story, of course, but the K-1 graphs actually stack up pretty well against the 645Z (but the extra resolution obviously gives the Z an advantage). They mentioned something like this in the review, commenting on how the Nikon 850 was pretty close to the 645Z, due to the sensor advances in the intervening 3 years since the 645Z came out.

11-15-2017, 12:26 PM - 1 Like	#15
Zav Pentaxian Join Date: Feb 2009 Photos: Gallery Posts: 1,371	Originally posted by Digitalis IMO the only good drink that comes from France is Cognac. I grew up in the Barossa valley, one of the best wine growing areas in Australia - and I hate wine. You don't know Orangina! :-)