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Author Topic: Comparing Apples to Grapefruit IQ180/D800E Crops  (Read 23384 times)
marcmccalmont
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« Reply #60 on: May 28, 2012, 05:55:16 PM »
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Both same FOV, f5.6
3D effect
Marc
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Marc McCalmont
marcmccalmont
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« Reply #61 on: May 28, 2012, 06:28:50 PM »
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Color, C1 daylight, PS color balanced on 18% grey
Marc
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Marc McCalmont
marcmccalmont
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« Reply #62 on: May 28, 2012, 11:45:24 PM »
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Flowers @ f8
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Marc McCalmont
KevinA
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« Reply #63 on: May 29, 2012, 01:49:52 PM »
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The 180 is better in lots of ways but its closer than the price difference should allow. The background on the 180 has gone stripy, the Nikon shot does not look like it should be like that in the out of focus areas. For that one reason on this subject shot as it is I would pick the Nikon as nicer on the eye. The 180 has more colour depth and a bit more resolution.

Kevin.
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Kevin.
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« Reply #64 on: May 29, 2012, 01:57:21 PM »
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Te difference looks quite big on the colour charts, "B" (I presume the 180) looks a lot nicer, "A" looks washed out in comparison.

Kevin.
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Kevin.
ErikKaffehr
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« Reply #65 on: May 30, 2012, 01:45:14 AM »
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Hi,

I spent some time looking at the flower crops. The two crops are very close, and I would have difficulty to say which I prefer. The IQ180 seems to be a bit crisper on the yellow petals (?). Anyway very close indeed!

Regardig the DR it is quite obvious that Marc has extracted quite a bit more shadow detail in the D800E image. The IQ seems to have some clipping in the sky, so I assume that exposure was quite optimal.

I would also suggest that the test images are very well chosen and executed. A great lot of thanks to Marc for sharing his experience, and supporting it with substantial images.

Best regards
Erik


Flowers @ f8
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opgr
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« Reply #66 on: May 30, 2012, 03:09:10 AM »
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Any chance you could make the RAW files available?

There is a slight but obvious focus difference between the shots. In the IQ shot, the red flower petals sticking forward turn soft. However, the amount of detail difference in the flower center is quite apparent, and the IQ shots seems to render a deeper colorsaturation curve and better separation of color. I wonder whether the latter is merely attributable to a different color profile, or whether it is a bitdepth issue.

Oddly enough, it looks as if the D800 reproduces better texture, but that may be due to the focus difference.
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Oscar Rysdyk
theimagingfactory
marcmccalmont
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« Reply #67 on: May 30, 2012, 03:22:44 AM »
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It's really hard to focus the technical lenses up close focusing differences are due to the D800's good live view and the IQ180's poor liveview
Marc
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Marc McCalmont
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« Reply #68 on: May 30, 2012, 03:25:57 AM »
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Last time I tried to make raws available through yousendit it didn't work maybe file size? But if you have a way for me to share the raws sure
Marc
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Marc McCalmont
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« Reply #69 on: May 30, 2012, 04:05:25 AM »
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Last time I tried to make raws available through yousendit it didn't work maybe file size? But if you have a way for me to share the raws sure
Marc

Have you tried DropBox?

You don't have to install anything, they also allow uploading via your browser.
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Oscar Rysdyk
theimagingfactory
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« Reply #70 on: May 30, 2012, 04:45:16 AM »
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It's really hard to focus the technical lenses up close focusing differences are due to the D800's good live view and the IQ180's poor liveview
Marc

Okay, got that.

It's interesting because where the IQ image is sharp, it is significantly sharper than the D800 image, but that is probably a lens issue. (Combined with larger sensels vs D800 etc). I do seem to detect some colorfringing in the IQ image. Don't know whether this is lens or sensor.

Purely on the tonal rendition in these images alone, it is clear that these are not in the same league. Perhaps not a 10x price difference league, but certainly, and quite visibly also not in the "massage the D800 image into IQ image in post" difference.

(I believe it was mentioned before, but the price difference may also include on-site dealer support, replacement backs etc, in which case it is obviously not relevant for iq comparison).





 
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Oscar Rysdyk
theimagingfactory
torger
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« Reply #71 on: May 30, 2012, 08:01:41 AM »
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Looking at the color checkers it seems like at least one of the cameras is producing not-so-accurate colors, color rendering is quite different for many of the colors. The more saturated look of the D800 makes me believe it is less accurate, but it is hard to know without having the reference color checker.
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marcmccalmont
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« Reply #72 on: May 30, 2012, 06:11:34 PM »
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Have you tried DropBox?

You don't have to install anything, they also allow uploading via your browser.
Great dropbox public links to a few raw files!
https://dl.dropbox.com/u/82427039/CF000678.IIQ
https://dl.dropbox.com/u/82427039/CF000690.IIQ
https://dl.dropbox.com/u/82427039/DSC_0557.NEF
https://dl.dropbox.com/u/82427039/DSC_0579.NEF
Marc
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Marc McCalmont
marcmccalmont
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« Reply #73 on: May 30, 2012, 06:30:34 PM »
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Converted these with Camera Raw
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Marc McCalmont
Ray
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« Reply #74 on: May 30, 2012, 06:50:55 PM »
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That's better, Marc. Your previous crops both had severely clipped shadows. One can now see more clearly that the D800E shot is cleaner in the darkest parts of the foliage, although the differences could be more dramatic if one were to choose a different scene with a larger area of dark shade containing more detail.

Thanks for taking the trouble to post these.
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ErikKaffehr
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« Reply #75 on: May 30, 2012, 10:27:34 PM »
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Hi,

Just tested with LR4.1. DR image just pressing "auto". Shadows on D800E image much cleaner at the pixel level.

Would you also be kind to post the "color checker images"?

Best regards
Erik




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marcmccalmont
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« Reply #76 on: May 30, 2012, 10:38:24 PM »
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Hi,

Just tested with LR4.1. DR image just pressing "auto". Shadows on D800E image much cleaner at the pixel level.

Would you also be kind to post the "color checker images"?

Best regards
Erik




I just started a 5 day trip when I return I'll post them
Marc
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Marc McCalmont
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« Reply #77 on: May 30, 2012, 10:55:10 PM »
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Thank you so much for your hard work on this. Amazing how close they are to each other overall, considering price.
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marcmccalmont
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« Reply #78 on: May 31, 2012, 02:48:17 AM »
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Thank you so much for your hard work on this. Amazing how close they are to each other overall, considering price.

Your welcome it's a nice way to get familiar with a new camera and figure out how to get the most out of it.
Marc
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Marc McCalmont
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« Reply #79 on: June 04, 2012, 01:04:05 PM »
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it is time to adjust the gravitational coefficient
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-------
richard
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