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Thread: Sigma DP2 Quattro Shots

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    Senior Member Quentin_Bargate's Avatar
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    Sigma DP2 Quattro Shots

    A couple of years ago, I started a thread on the then new Sigma DP2 Merrill camera. I was very impressed by the image quality.

    Today, I took delivery of its successor, the DP2 Quattro, and, as with the DP2M, I decided to take a few casual shots over lunch to form a first view of the image quality, although this time, using less poat processing than with the Merrill shots.

    The following are links (shrunk to fit this forum) to full size jpeg conversions from raw (right click and magnify to see the originals), using Sigma Photo Pro 6.03.









    All are -1 sharpening, 1 point reduced NR, ISO 100, except for the bottle shot, which was IS0 200.

    My (possibly controversial) very preliminary conclusions so far are that this camera is a winner.

    The colors look good, the Merrill mono shadow issue is largely gone, but the sharpness and fine details remain.

    given the reservations expressed elsewhere, I am pleasantly surprised.

    More thoughts to follow.
    Last edited by Quentin_Bargate; 15th July 2014 at 08:11.
    Quentin Bargate
    Director of Bargate Murray, Law Firm of the Year 2012 - 2017, ”leading individual”, Chambers HNW guide, 2017, Photographer
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    Re: Sigma DP2 Quattro Shots

    A few more thoughts

    Like the Merrill, this is a low ISO camera. extra noise is apparent as early as ISO 200.

    It is also sensitive (again, like the Merrills) to camera shake. Some shots I took at 1/100 sec show low level camera shake, despite my best efforts to keep things still. Best bet is to shoot a 1/160 or faster, or use a tripod.
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    oh man, in the UK they sell oranges as apples from austria.^^

    Thanks for the pics, I am real curious about side by side shots with a merrill.
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    Re: Sigma DP2 Quattro Shots

    Hi Quentin,

    I don't think this is going to be that controversial. Colors are beautiful. I think that the 'loss in microcontrast' is mostly (not entirely) a 'perceived loss in microcontrast'. The camera is only going to get better with software improvements (and possible firmware improvements)---and it gets better in the operator's hands with some time to become familiar....

    The thing I hate about these cameras is how they expose weaknesses in my handholding capabilities! The jump from the SD15 to the DPM series was pretty dramatic...

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    Re: Sigma DP2 Quattro Shots

    Yes, the microcontrast is there, its just some of the grittiness has been reduced. It is a more truthful rendering, in my view.
    Quentin Bargate
    Director of Bargate Murray, Law Firm of the Year 2012 - 2017, ”leading individual”, Chambers HNW guide, 2017, Photographer

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    Re: Sigma DP2 Quattro Shots

    Quentin, how do you like the (wide) shape of the camera in your hands?
    Does it make you tremble more because it does not look like a one hand shooting camera, despite its weight.

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    Re: Sigma DP2 Quattro Shots

    Quentin

    I can't say what it is....?
    Files looks clean. Very clean. It reminds me somehow om how X-TRANS files looks. Not color wise, the pastel color look, but similar feel and look. Your recordings neither looks quite like Bayer files. They have their own look. Warmer and lusher.
    I am positive towards the Q's. I was all the time, but seeing the captures on DL turned me away.
    But I must say I miss a bit of soul here. The look has a touch of clinical 2 dimensional flat rendering no matter the resolution and perceived sharpness.
    That said, surely updates of both the SPP and FW in the future will change things a bit in one direction or another.

    Your post is most appreciated.
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    Re: Sigma DP2 Quattro Shots

    Michael

    Odd, but I quite like it. I don't use the camera one-handed. I have a theory it might be meant to appeal to mobile phone users (perish the though) because it felt a bit like that

    These particular shots were decoded from raw straight to sRGB jpegs in SPP 6.03.

    Early days....
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Quentin_Bargate View Post
    ...SPP 6.03...
    btw: does this work without problems?

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    Re: Sigma DP2 Quattro Shots

    Please test it against Merrill with pics including fine detail, eg leaves

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by foveon View Post
    btw: does this work without problems?
    I will, at the weekend. So far SP 6.03 has been OK, but slow.
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Quentin_Bargate View Post
    ..So far SP 6.03 has been OK, but slow.
    what a surprise^^
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    Re: Sigma DP2 Quattro Shots

    So what, I wondered, might an image saved using the "double size" option look like out of SPP 6.03? I.e. equivalent to almost 80mp, slightly sharpened in post.

    https://dl.dropboxusercontent.com/u/9806585/BigWall.jpg

    No special effort made here; possibly better results with more care. Better than I expected.
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Quentin - Based on your early sense of things, I'm getting more excited by the Quattro's capabilities! They are not currently available where I am, but I've already ordered the lens hood and remote release from Sigma! LOL I guess I'm "in"...

    I thought this might be an OK place to interject something into the Quattro discussion in general. I queried Really Right Stuff via email about whether they will be considering making an L-plate for the Quattro that will allow use of the Sigma remote release easily.... I had praised their Merrill L-plate and told them that I thought the Quattro might end up being a very popular landscape camera and a decent market for L-plates.

    Here's the response I received from them just now:

    "Hi Rand,

    I honestly don't know for sure if we plan to make custom plates for the Quattro - yours is the first inquiry I've seen for that camera. I'll certainly bring the camera up with Joe and the design team and make note of your interest.

    If you know of anyone else who would like to see custom plates made for this model, please make sure they let us know.

    Thanks!
    Jim Weise
    Customer Service
    Really Right Stuff, Inc."

    So, fellow potential Quattro purchasers - send RRS an email expressing your interest. Email to: [email protected]

    Best regards,
    Rand

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    Re: Sigma DP2 Quattro Shots

    Hi Quentin,

    Thanks for providing your initial observations on the new Quattro. I'm curious, though, on the Digilloyd review site Lloyd felt one of the casualties of the new sensor design was a lack of the famous Foveon 3D pop (possibly due to the lower levels having fewer photo sites than the top layer).

    What's your take?

    Peter
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    My job is to capture them.

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    Re: Sigma DP2 Quattro Shots

    I already tested the Quattro at double size out of SPP, vs. normal size enlarged with PhotoZoom Pro.

    PhotoZoom wins! Don't use double size, it's terrible.

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    Re: Sigma DP2 Quattro Shots

    I think the first photo of the peaches has a nice 3D rendering... on my screen, there is a pretty noticeable sense of depth inside the box and the fruit are (again, IMO) quite "round". I'll be excited to see how the camera does as people become more acquainted with the post processing.

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    Senior Member Tim's Avatar
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    Re: Sigma DP2 Quattro Shots

    My take on this is, these are fine images from Quentin - thank you for posting. The DP2Q yields a nice detailed image that would be enough IQ and detail for most of my needs and enlargement size (maybe yours as well?). I have a DP2M/3M already which, while has a different look is more than I currently need.

    So while yes i can agree it has a different look, most viewers (my audience) will be engaged with either image and probably would not be able to tell them apart. I'm happy with what my Merrills do. Having said this, I have seen a couple of richly detailed, smooth but sharp BW images from the Quattro that left me wondering if its BW is somewhat better than the Merrill.

    So its likely for me unless my DP2M dies or is lost I will just keep on with it. Should my Merrills go and Quattro is the only option, I'd still likely buy one.

    To add, like a few others I really do miss the original DP2 rendering. The "foveon pop" is gone. I keep my DP2 for the odd image. The DP2M occasionally manages this, the DP3M a bit more often, i think with the Quattro's sensor we won't see this much at all.

    What I would like is to see the DP2 sensor (or say a 8Mpixel sensor) in a Ricoh GR body or Nikon A body. But this is very unlikely to happen.

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    Re: Sigma DP2 Quattro Shots

    Below a screen shot of an image taken from the terrace of the House of Commons looking up the river Thames. You can read off the settings in SPP 6.03. The shot was slightly underexposed



    Below is a link to the processed image, with no further adjustment.

    https://dl.dropboxusercontent.com/u/..._July_2014.jpg
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by peterb View Post
    Hi Quentin,

    Thanks for providing your initial observations on the new Quattro. I'm curious, though, on the Digilloyd review site Lloyd felt one of the casualties of the new sensor design was a lack of the famous Foveon 3D pop (possibly due to the lower levels having fewer photo sites than the top layer).

    What's your take?

    Peter
    Peter

    Less pop, but still some crackle

    I mean that the micro contrast now looks more like any other camera, but the pixel level sharpness is still high.

    I have been playing around with the most recent Thames trial image, and decoded double size direct from SPP using the settings illustrated, with a tad more sharpening in Photoshop provides an image that looks very good at 80mp.

    This is bearing in mind the fact I am using SPP on my business laptop, where I don't have the more advanced processing options I have available on my main imaging PC, such as PhotoZoom Pro to upscale, Neat Image NR, or various sharpening tools. These conversions (and the conclusions I am drawing from them) are thus very much interim and probably capable of improvement.

    I'm not sure about the tree foliage or the slight blurring of the "Marriot" sign (in red, above the arch, centre-right) but then I have not completely wound down the NR in SPP. On the other hand, most of the remainder of the detail is exceptional and on a par with the Merrills.
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    First, I'd like to thank Quentin for starting the Merrill thread that I tripped across last year. I've since acquired the triumvirate and despite their almost limitless limitations vis-a-vis my other cameras (you all know the list -- laughable battery life, glacial processing speed, poor DR ...), I am so happy I bought them since when you feed them the light they crave they stand toe to toe with my D800E and produce outstanding images. One thing I have never satisfactorily dealt with, which I see in Quentin's Thames shot is the magenta/green patchiness in the dark tones (the river here). I always find it distracting. Does anyone have a suggestion for how to mitigate this foveon artifact without otherwise harming the image?
    Thanks,
    Richard

    p.s.: and no slight meant to the other posters of outstanding images on these threads, it's just that I happened across Quentin's posts first ;-)

    Quote Originally Posted by Quentin_Bargate View Post
    Peter

    Less pop, but still some crackle

    I mean that the micro contrast now looks more like any other camera, but the pixel level sharpness is still high.

    I have been playing around with the most recent Thames trial image, and decoded double size direct from SPP using the settings illustrated, with a tad more sharpening in Photoshop provides an image that looks very good at 80mp.

    This is bearing in mind the fact I am using SPP on my business laptop, where I don't have the more advanced processing options I have available on my main imaging PC, such as PhotoZoom Pro to upscale, Neat Image NR, or various sharpening tools. These conversions (and the conclusions I am drawing from them) are thus very much interim and probably capable of improvement.

    I'm not sure about the tree foliage or the slight blurring of the "Marriot" sign (in red, above the arch, centre-right) but then I have not completely wound down the NR in SPP. On the other hand, most of the remainder of the detail is exceptional and on a par with the Merrills.

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    Re: Sigma DP2 Quattro Shots

    https://dl.dropboxusercontent.com/u/..._July_2014.jpg

    Quite impressiv, watch the people inside the cabins of the wheel.

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    Re: Sigma DP2 Quattro Shots

    Thanks Quentin.

    I agree. Less Pop.

    Less micro contrast and "foveon" look.

    Which to my way of thinking is a step back.

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    Re: Sigma DP2 Quattro Shots

    Nice shot of the Thames, Quentin.

    I'm not seeing the per pixel sharpness that my DP2 Merrill provides and I'm also seeing a slight haze over the entire image as well as the red/green blotchiness in the water that Richard mentioned earlier.

    What most attracted me to the Merrill was the incredible per pixel sharpness... especially in distant objects. While the resolution appears good in the Quattro, I'm not seeing the clarity along the edges of details that I always see in my DP2M.

    It will be interesting to see how Sigma adjusts for this in future firmware revisions... but for the time being I won't be an early adopter of the Quattro.

    Lawrence

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    Re: Sigma DP2 Quattro Shots

    Lawrence, All

    I think the haze might simply be a lack of contrast. It was a slightly hazy early evening. I am far from anywhere near getting to grips with optimum processing settings. What is clear is they are likely to e very different from the Merrills.

    The green/purple blotchiness is an issue, present also in the Merrills.

    Clearly the DP2Q is a pretty hopeless high ISO camera. It is a fixed lens design, so it also lack versatility and it has no optical or even electronic viewfinder. These limitations it shares with the Merrills. The only reason to use this camera over the Merrills is if it has other qualities that compensate.

    When I look at the Q series, I am looking at a camera that I might use instead of not just my Sony A7R, but also my Hasselblad H5D where weight and size are at a premium. Optimistic? Absolutely, but I use a camera like the H5D on a tripod, or carefully hand held, and I think that if the DP2Q has been well designed, with decent software, the differences should not be screamingly obvious. The defects I have an issue with at the moment are those that affect the image even when used at base ISO, such as blotchiness or artefacts, if any.

    Over the weekend, I will try a quick non-scientific side by side shootout with the DP2M and Sony A7R just to see if the Q has a dog in the fight. I am going to suggest it just might..
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Thank you for these photos.

    It is true that one loses the distinct and contrasting of merrill made​​. Although I loved rendering merrill, I prefer rendering the best quattro. It seems more natural to me. I have the impression that this is the NPC who has made ​​the most realistic, compared to merrill, and bayer APSC and FF.
    With its definition, are very high level of detail, but more velvety rendering, colors, quattro seems to me the apn which is closest rendering MF.

    Too bad there was still sometimes drifts magantas and green colors, in some photos.

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    Re: Sigma DP2 Quattro Shots

    The mentioned haze I saw in all files around. Also the awesome Diglloyd files. It is there all the time... and Chambers calls it dust.
    Think it is a signature of the DPQ and eventual the SPP.

    Quentin, you do everybody a lot of favor posting your files. I prefer a skilled unbiased photographer to elaborate how he finds the IQ.

    Also a thank you from me having started the Merrill thread that holds so many magnificent images.

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by G43 View Post
    I prefer a skilled unbiased photographer to elaborate how he finds the IQ.
    Could maybe be misunderstood. I mean like you are...

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Quentin_Bargate View Post
    ....Over the weekend, I will try a quick non-scientific side by side shootout with the DP2M and Sony A7R.....
    And please, include shots of nature, trees and grass; IMO geometry is easy to interpolate for digital cameras, organic forms will show the differences, eg your Thames pic, all is tackle sharp exept the trees, there I dont see much rendering and detail.
    Have a busy weekend

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by foveon View Post
    And please, include shots of nature, trees and grass; IMO geometry is easy to interpolate for digital cameras, organic forms will show the differences, eg your Thames pic, all is tackle sharp exept the trees, there I dont see much rendering and detail.
    Have a busy weekend
    It will be done and dusted in half an hour or so, Foveon. I don't usually do this sort of comparative testing, preferring to rely on my own judgment. It will include grass and tress as those are the areas of potential weakness I also see.
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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Quentin_Bargate View Post
    Peter

    Less pop, but still some crackle

    I mean that the micro contrast now looks more like any other camera, but the pixel level sharpness is still high.

    I have been playing around with the most recent Thames trial image, and decoded double size direct from SPP using the settings illustrated, with a tad more sharpening in Photoshop provides an image that looks very good at 80mp.

    This is bearing in mind the fact I am using SPP on my business laptop, where I don't have the more advanced processing options I have available on my main imaging PC, such as PhotoZoom Pro to upscale, Neat Image NR, or various sharpening tools. These conversions (and the conclusions I am drawing from them) are thus very much interim and probably capable of improvement.

    I'm not sure about the tree foliage or the slight blurring of the "Marriot" sign (in red, above the arch, centre-right) but then I have not completely wound down the NR in SPP. On the other hand, most of the remainder of the detail is exceptional and on a par with the Merrills.
    Quentin,
    Thanks for posting your results with the Q. I think that files from this camera do need some additional processing help to bring out detail. I ran your Thames image through Topaz Adjust 5 using the "mild detail" setting only and it does seem to bring out more of the Merrill look. Looking forward to more of your tests with this interesting camera.

    Drop box image with Topaz adjust
    Carl
    Gallery

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    Re: Sigma DP2 Quattro Shots

    A crop interpolated 36-megapixel, lets see alot of end details in the leaves.
    ThamesJuly2014crop36 - HostingPics.net - Hbergement d'images gratuit

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by octagone View Post
    A crop interpolated 36-megapixel, lets see alot of end details in the leaves.
    ThamesJuly2014crop36 - HostingPics.net - Hbergement d'images gratuit
    this example is freakin crap. Sorry to say this but it is just crap.
    Kind regards - Hulyss - hulyssbowman.com

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    Re: Sigma DP2 Quattro Shots

    Is it possible for you, to load up the images as raw? Im interested in SDIM0010.jpg (the colorful one) and in the one of the river.

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    Re: Sigma DP2 Quattro Shots

    I have uploaded two raw files, one taken with the DP2M and one with the DP2Q.

    This is the scene, lots of foliage to mull over, as requested:



    And here are the two raw files


    Apologies, hopeless Dropbox bandwidth restrictions mean I have had to remoive these links


    Settings: both tripod mounted, AWB, 100ISO, F/8 @: 1/320 sec. Focus on stables. Sigma Photo Pro 6.04 for Windows.

    Make of it what you will, but my feelings are as follows

    The Quattro slightly out-resolves the Merrill. Foliage is well resolved by both, but distant foliage appears slightly crisper (higher contrast, not higher resolution) with the Merrill. Colour balance is more accurate and saturation lower by default with the Quattro, but this can of course be adjusted to suit taste.

    And that, ladies and gentlemen, is as much testing as I propose to do
    Last edited by Quentin_Bargate; 20th July 2014 at 04:00.
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    OK, Quentin, you're not off the hook that easily! :-) But thank you for the RAW files!

    Conclusions! If you owned neither camera, Merrill or Q, based on what you see which one would you buy - and why - if you could only buy one. (That last proviso is necessary because anyone who drives and Aston Martin can probably afford both! SMILE!)

    Rand

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    Re: Sigma DP2 Quattro Shots

    No idea, Rand.

    The Quattro is probably the better camera. Higher resolution, more "normal" looking files, but therefore less exciting. I remember the excitement when I first decoded a Merrill raw. I don't get that same excitement with the Quattro, but I do see a better balanced file with very high resolution.

    Importantly, both fit nicely in the glove compartment of the Aston
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Shapes and curves - from the garden with the DP2Q




    Last edited by Quentin_Bargate; 20th July 2014 at 02:29.
    Quentin Bargate
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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Quentin_Bargate View Post
    No idea, Rand.
    The Quattro is probably the better camera. Higher resolution, more "normal" looking files, but therefore less exciting. I remember the excitement when I first decoded a Merrill raw. I don't get that same excitement with the Quattro, but I do see a better balanced file with very high resolution.
    In Japanese this translate like that :

    Only the swords crafted by a great smith are inspirational.
    Kind regards - Hulyss - hulyssbowman.com

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    Senior Member Quentin_Bargate's Avatar
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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Hulyss Bowman View Post
    In Japanese this translate like that :

    Only the swords crafted by a great smith are inspirational.
    Exactly
    Quentin Bargate
    Director of Bargate Murray, Law Firm of the Year 2012 - 2017, ”leading individual”, Chambers HNW guide, 2017, Photographer

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    Member octagone's Avatar
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    Re: Sigma DP2 Quattro Shots

    Damage, the latest version of spp, does not work on my computer. He informed me that I did not have enough memory.

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    Quattro monochrome

    I had a Quattro last week for testing and one thing that I haven't seen discussed is the inability to use the blue channel only in SPP for high ISO monochrome shots. Bummer.
    DP2Q @ ISO 1600 100% crop


    DP2M @ ISO 1600 100% crop


    I just posted a bunch of other comparison shots here: Some thoughts on the Sigma DP2 Quattro (and comparison with Merrill) | out. living.
    Likes 2 Member(s) liked this post

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by Quentin_Bargate View Post
    No idea, Rand.

    The Quattro is probably the better camera. Higher resolution, more "normal" looking files, but therefore less exciting. I remember the excitement when I first decoded a Merrill raw. I don't get that same excitement with the Quattro, but I do see a better balanced file with very high resolution.

    Importantly, both fit nicely in the glove compartment of the Aston
    Quentin,

    Thank you... Based on your excellent judgment I'll be keeping the 2 and 3 Merrills. Whether to add a Q to the fleet becomes the question! Since I drive a lowly Toyota 4Runner I'll have to find space for it somewhere in the back.

    Please keep the images and impressions coming as you have time and inclination. As others have said, it was your amazing images and insight that had me pull the trigger on the Merrills and I found that your perception of, and treatment of, the files to match my experience almost exactly. Much appreciated.

    Wishing you all continued success.

    Rand

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    Senior Member Hulyss Bowman's Avatar
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    Re: Quattro monochrome

    Quote Originally Posted by brendans View Post
    I had a Quattro last week for testing and one thing that I haven't seen discussed is the inability to use the blue channel only in SPP for high ISO monochrome shots. Bummer.
    DP2Q @ ISO 1600 100% crop


    DP2M @ ISO 1600 100% crop


    I just posted a bunch of other comparison shots here: Some thoughts on the Sigma DP2 Quattro (and comparison with Merrill) | out. living.
    Yes I seen it and linked it over DPreview, for example.
    But as you will see, nobody will react. You can't say that Quattro is a lemon, this is a sin on DPreview fanazigma forum.
    I personally think that you are pretty spot on on your comparisons, that you give full size to compare, that the shoots are well made, and that prove that the Quattro, at leats for me, is just mhe

    For precise colors, there is better bayer gear.
    Kind regards - Hulyss - hulyssbowman.com

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    Contributing Editor ustein's Avatar
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    Re: Sigma DP2 Quattro Shots

    Quentin,


    you images don't show here (Dropbox blocks them)
    Uwe Steinmueller
    -------------------

    Editor&Owner of Digital Outback Photo
    http://www.outbackphoto.com

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    Re: Sigma DP2 Quattro Shots

    Quote Originally Posted by ustein View Post
    Quentin,


    you images don't show here (Dropbox blocks them)
    Thanks, Uwe. Apparently I am generating too much traffic and Dropbox as temporarily blocked access
    Last edited by Quentin_Bargate; 20th July 2014 at 02:48.
    Quentin Bargate
    Director of Bargate Murray, Law Firm of the Year 2012 - 2017, ”leading individual”, Chambers HNW guide, 2017, Photographer

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    Re: Sigma DP2 Quattro Shots

    Hi Rand

    Thanks, very kind

    Images now back. With no warning, Dropbox decided to prevent link sharing on my account due to bandwith usage. I have now removed the "temporary" ban. I guess that might have been the raw file links I posted, but who knows?
    Quentin Bargate
    Director of Bargate Murray, Law Firm of the Year 2012 - 2017, ”leading individual”, Chambers HNW guide, 2017, Photographer

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    Re: Quattro monochrome

    Quote Originally Posted by brendans View Post
    I substantially agree with your conclusions. Once the unique look and feel of the Merrill images is removed, is what's left sufficiently different to make the Quattro a better choice than it's more versatile competitors? I'm still undecided.
    Quentin Bargate
    Director of Bargate Murray, Law Firm of the Year 2012 - 2017, ”leading individual”, Chambers HNW guide, 2017, Photographer

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    Re: Quattro monochrome

    Quote Originally Posted by brendans View Post
    I had a Quattro last week for testing and one thing that I haven't seen discussed is the inability to use the blue channel only in SPP for high ISO monochrome shots. Bummer.

    I just posted a bunch of other comparison shots here: Some thoughts on the Sigma DP2 Quattro (and comparison with Merrill) | out. living.
    Exactly the same result DL concluded until now.
    Waiting for his outdoor series, but they will hardly show it any different than your findings.

    Thanks Brendan posting this.

    1-0 to the M's.

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    Re: Sigma DP2 Quattro Shots

    2-0 Merrills?

    The Online Photographer

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