PIX 2015

New Dp2 Quattro (beta) samples~~~~ Locked

Started Jun 17, 2014 | Discussions thread
Shop cameras & lenses ▾
This thread is locked.
Senior MemberPosts: 2,223Gear list
Re: I uploaded the samples to my Onedrive cloud
In reply to michaeli, Jun 17, 2014

Thank you for providing those samples!

I'm happy to see far better examples now, than the ones Sigma provided so far.


Those examples seem to be OOC JPG and in this regard they are in my opinion in the expected ball park (which means: very good for APS-C OOC JPG)...

...except of the ISO 200 leaf (SDIM0016.jpg)...

...it is already soft (probably due to noise reduction, if there is no focus error)...

...and we have to remember that this is ISO 100 (D800) equivalent:




remember that the following critic in regard of the OOC JPG pictures,

is critic on a high level - no need to throw stones or smth....


The grass, which is in focus in picture SDIM0072 shows jaggies, maybe due to sharpening...

The railing in picture SDIM0320 shows not only jaggies, but also the doubling of this artifact:

At the bottom of the building it seems to be a double railing (the horizontal structure / handrails) with jaggies...

...which becomes thinner and thinner from floor to floor, until it is a single railing with jaggies...

...however, this is due to the perspective, that makes the double railing (handrails) look like a single railing (handrail) - at higher floors.


The vertical structure within the railing, where normaly the most obvious demosaicing artefacts (with Bayer pattern sensors) appear, or funny structure inventions from the classical Foveon - is rendered pleasently.


All in all, it is like it was expected:

In regard of artifacts not perfect, but the best approach so far...


However, noise, which was not expected as a problem, seems to be a problem...

...even at (D800) ISO 100 equivalent (SDIM0016.jpg)...


Like I already mentioned here:


The unexpected high noise floor, may be a software problem and / or a sensor problem (weighting of the layers / layer thickness and / or the influence of the wiring of the top layer in regard to the lower layers)...

...however, both problems can be solved in future with a Quattro-s sensor and SPP 7 or smth...

...at the moment, it still seems to be a base ISO (50 / 100) camera for special purposes...

...which is not bad, but not as good as I hoped it would be - so far.

michaeli wrote:

I uploaded the samples to my Onedrive cloud, hope it doesn't break the law:







-- hide signature --

Envy is the highest form of recognition.
Stop to run, start to think.
Think twice - that doubles the fun!
Your world is as big, as Your mind.
Avoid to have only one point of view!
U see?

 Usee's gear list:Usee's gear list
Samsung NX1 Samsung NX 12-24mm F4-5.6 ED Samsung NX 45mm F1.8 2D/3D Samsung 16-50mm F3.5-5.6 power zoom Samsung 50-150mm F2.8 S
Post (hide subjects)Posted by
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
(unknown member)
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow