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Thread: 645Z DXO Mark

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    Re: 645Z DXO Mark

    Amazon (dprevs), DX0, etc are all store fronts, promoting what they want to sell.

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    Re: 645Z DXO Mark

    While the 645z is a great camera, I'm not so sure DXO marks such as these are really that relevant beyond internet bragging rights. IMHO DXO opening back up to MF testing won't serve much purpose other than MF owners talking in forums justifying their purchase of system X or system Y, or 35mm photogs pointing out there's not much difference between a D850 (score of 100 I think) and MF (645z with score of 101). None of this discussion will be anything new.

    From the list of cameras in the screenshot of the DXO database in the PetaPixel article, I've owned the D800E, D810, A7RII, and 645z. The A7RII was my least favorite when it came to long exposures, but other than the differences in lens lineups between the systems, there wasn't anything I could do with one camera that I couldn't do with another. I made great images with each of those cameras, and if I put images together with each system side by side, I doubt anyone could tell the difference. This isn't a bad thing, and I'm happy to be a photographer in a world where there are so many great options out there.
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    Re: 645Z DXO Mark

    The 101 score,if it comes out at that (which will surprise me since DxO has made it clear that score was not 100% completed), will at least be a testament to the Sony 50MP chipset. First released in January 2014:

    https://luminous-landscape.com/iq250-back-announced/

    With the Phase One IQ250. Now less than 1 year old Fuji and Hasselblad systems both of which added to the capabilities of the sensor over Phase One, (ES, touchscreen, multiple AF points to mention a few).

    The 645z is still a great deal and has gotten even better lately. My only issue is the future of Ricoh, the parent company. But I am sure that for the 645z warranty/repair etc will be around for at least the next 5 to 10 years. Pentax IMO did the same thing with the K1, taking the same 36mp chipset and added a huge number of improvements. However they never addressed the white dot issue for raw even though it was fully known about (see Nikon D810 white dot recall), and instead only added a firmware fix for in camera jpgs. If you are an astro shooter, you fully know the reasons NOT to capture as jpg. Pentax has not added any new lenses for either the MF or 35mm line in over 1.5 years even though they have mentioned several new lenses "coming". And the 3rd parties like Sigma,Zeiss etc no longer make their most current lenses for the K mount, and there is no way to convert the mount without loss of infinity.

    I am in the process of selling off my K1 investment, keeping only the base body and 1 lens for Astro work. But it still is an impressive body, one that can be fully immersed in water, along with a WR Pentax lens which is something no other WR camera in the 35mm format can do as far as I know. Pentax, had a great idea with pixel shift, however they totally failed on the raw conversion. There is no mainstream software that can take a pixel shift image and really render it correctly. LR fails totally, and C1 never choose to make the conversion (I guess scared that for some reason it might compete with the MF sales, it can't be that hard as Iridient has had it for over a year now). Pentax should have pushed Adobe to work again on the conversion, but nothing has ever been updated. That only leaves Silkypix which I have tried, Vr 6,7 8 and just don't like the workflow. Pixel shift has huge, really huge possibilities (25% to 35% more captured resolution, vastly cleaner files at base ISO and up to 6000, and much more control on highlights, but the raw conversion just did not make it.

    Paul Caldwell
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    Re: 645Z DXO Mark

    Quote Originally Posted by Paul2660 View Post
    ............................. There is no mainstream software that can take a pixel shift image and really render it correctly. LR fails totally, and C1 never choose to make the conversion (I guess scared that for some reason it might compete with the MF sales, it can't be that hard as Iridient has had it for over a year now). Pentax should have pushed Adobe to work again on the conversion, but nothing has ever been updated. That only leaves Silkypix which I have tried, Vr 6,7 8 and just don't like the workflow. Pixel shift has huge, really huge possibilities (25% to 35% more captured resolution, vastly cleaner files at base ISO and up to 6000, and much more control on highlights, but the raw conversion just did not make it.

    Paul Caldwell
    Paul:

    I have a K-1 which I haven't used much, but have had success with Rawtherapee and PS. Others, with more experience than I, report good success.
    e.g,
    https://lonekheir.wordpress.com/2017...-therapee-5-1/

    https://www.youtube.com/watch?v=yS_emMnuufg

    Tom
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    Re: 645Z DXO Mark

    You bring up a great point, yes rawtherape does an excellent job on the raw and pixel shift files from the K1. However it won't export (at least I couldn't get it to) to dng format.

    Since I still want to use LR or C1 for the tweaking, as I just prefer the toolsets, and know them the best, I have looked for a way to get a democasic done, but outputed to dng like the Iridient transformer now does for X trans.

    Anyway, great point on rawtherape.

    Paul Caldwell

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    Re: 645Z DXO Mark

    Quote Originally Posted by Paul2660 View Post
    The 101 score,if it comes out at that (which will surprise me since DxO has made it clear that score was not 100% completed), will at least be a testament to the Sony 50MP chipset. First released in January 2014:

    https://luminous-landscape.com/iq250-back-announced/


    The 645z is still a great deal and has gotten even better lately. My only issue is the future of Ricoh, the parent company. But I am sure that for the 645z warranty/repair etc will be around for at least the next 5 to 10 years. Pentax IMO did the same thing with the K1, taking the same 36mp chipset and added a huge number of improvements. However they never addressed the white dot issue for raw even though it was fully known about (see Nikon D810 white dot recall), and instead only added a firmware fix for in camera jpgs. If you are an astro shooter, you fully know the reasons NOT to capture as jpg. Pentax has not added any new lenses for either the MF or 35mm line in over 1.5 years even though they have mentioned several new lenses "coming". And the 3rd parties like Sigma,Zeiss etc no longer make their most current lenses for the K mount, and there is no way to convert the mount without loss of infinity.

    Paul Caldwell
    I have both cameras 645Z and K1. They are fantastic tools with great output and there is very little I can't do with them for my kind of work. Very happy with them. I had to Leitax Zeiss lenses to get there with the K-1 though.The total silence on support and new lenses is a concern for me as well. There was supposed to be a very expensive new FA 50/1.4 for the K-1 this or last month. But still nothing.
    It is a bit frightening, a company where nothing happens.
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