Opticallimits

Full Version: DxO & NEX 7
You're currently viewing a stripped down version of our content. View the full version with proper formatting.
... and they like it at lot ...[url="http://www.dxomark.com/index.php/News/DxOMark-news/Sony-NEX-7-comparisons-and-review"]http://www.dxomark.c...sons-and-review[/url]

Guest

[quote name='Klaus' timestamp='1323504130' post='13570']

... and they like it at lot ...[url="http://www.dxomark.com/index.php/News/DxOMark-news/Sony-NEX-7-comparisons-and-review"]http://www.dxomark.c...sons-and-review[/url]

[/quote]

What strikes me a little odd is that the nex has an 80% lower High iso score but at the same time allegedly a greater dynamic range than the 5d Mark II. I always thought that dynamic range was restricted by noise (at least in dark tone areas). Not really sure what to make of this dxo stuff, although the sensor looks indeed very good from the samples I have seen so far. I wouldnt call it 5d territroy though. Once you lighten shadows a bit in the nex 7 images, you see quite a bit more noise than in 5d images. Nevertheless, for an aps-c sensor its really good.

dxo's claim that the NEX7 is better than 5d (81 vs.79 overall points) shoukd be taken with a huge grain of salt here.
[quote name='jenbenn' timestamp='1323507513' post='13574']

What strikes me a little odd is that the nex has an 80% lower High iso score but at the same time allegedly a greater dynamic range than the 5d Mark II. I always thought that dynamic range was restricted by noise (at least in dark tone areas). Not really sure what to make of this dxo stuff, although the sensor looks indeed very good from the samples I have seen so far. I wouldnt call it 5d territroy so. Once you lighten shadows a bit in the nex 7 images, you see quite a bit more noise than in 5d images. Nevertheless, for an aps-c sensor its really good.

dxo's claim that the NEX7 is better than 5d (81 vs.79 overall points) shoukd be taken with a huge grain of salt here.

[/quote]



I think the DxO normalization favors high megapixel sensors.

Guest

[quote name='Klaus' timestamp='1323507945' post='13575']

I think the DxO normalization favors high megapixel sensors.

[/quote]

Could be, I still find these point scores misleading for people who dont take the time to acquaint thenmselves with dxo testing scheme. ANyway.

HEre I have i nice real life review by a professional who used the 5d next t the NEX-7 on a job: http://petersills.wordpress.com/

In short: He liked it a lot, too. his critical points are more or less the same as Micheal Reichmanns from the luminous landscape. I think I will try it.
The DxO scores are ratings for the whole sensor, so all else being equal, bigger is usually better. I do not think they favour more or less MP sensors.



Note the maximum dynamic range is typically measured at low ISO. The High ISO score of course is a different measure. Also note on DxO's scale, 15 points is equivalent to about one stop, or 5 points for 1/3. A two point difference probably isn't significant to say the NEX7 is "better" than the 5D2, but you could say they're "about the same". BUT, of course they still differ depending if you want more dynamic range at low ISO, or better noise results at high ISO. So as always, approach "single value scores" with caution comparing devices.



The dynamic range seems to have been boosted quite a bit in recent times with sensors from Pentax, the Nikon and Sony, so as Canon haven't put out a new sensor in quite a while (putting aside the non-available 1D X) they're a bit behind the curve at the moment.



Side note, looking at more similar sized sensors, the NEX7 is exactly 15 points over the 7D. I hope Canon do at least catch up with the curve on their next sensor for potentially one stop worth advantage.

Guest

[quote name='jenbenn' timestamp='1323508363' post='13576']I think I will try it.[/quote]



Another experiment? I would try it too, but not at this price point.
[quote name='Sammy' timestamp='1323513228' post='13578']

Another experiment? I would try it too, but not at this price point.

[/quote]



Seems as if the GH-2 is currently phasing out. I reckon a GH-3 would be more within your traditional homeland, right ?

Guest

[quote name='Klaus' timestamp='1323515632' post='13580']

Seems as if the GH-2 is currently phasing out. I reckon a GH-3 would be more within your traditional homeland, right ?[/quote]



Well, yes, but I´m open for some experimenting too <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='Smile' />

Besides, I don´t like the GH-x style of bodies that much and hardly ever need video.

Guest

[quote name='Sammy' timestamp='1323513228' post='13578']

Another experiment? I would try it too, but not at this price point.

[/quote]

Well, as it will not become available this year, I will have to test it after my return from India. Point is, if it turns out to be good and if a high quality standard zoom becomes availbe, I may part with the canon stuff. At least the 50D will go and the 24-105. I may keep the 5d and the other lenses though.

Guest

[quote name='jenbenn' timestamp='1323521856' post='13584']I will have to test it after my return from India. Point is, if it turns out to be good and if a high quality standard zoom becomes availbe, I may part with the canon stuff.[/quote]



Where in India are you going to? As for the NEX-7, there are still concerns about the "TriNavi" UI (let´s just say it´s controversial), the speed and accuracy of the Sony implementation of CDAF, and, of course, the lack of lenses.