Aky je rozdiel medzi Capture NX2 a Photoshopom?

jake 2009-01-14 21:21:08+01

Presiel som na Full Frame a tym aj technicka uroven fotiek a spracovanie vyzaduje program. Nakolko som pouzival Canon Profesional - teraz som zmenil znacku na Nikon D700. S tym software nemam skusenosti. Co vziat? Zameranie: samozrejme uprava RAW, HDR-fotografia a fotomontaz. CO treba inac k fotomontazi?

reagovať

fatality 2012-06-20 12:58:58+02

príspevok od: duroslav

SI si istý, že máš vo foťáku bezstratovú kompresiu? Nižšie rady používajú práveže stratovú kompresiu RAW súborov. Akurát viem o tom, že pre D5100 existuje nejaký patch, ktorým pridá do foťáku možnosť bezstratovej kompresie RAW-u. Takže ak máš originál firmware od Nikonu, tak máš stratovú kompresiu.

mas pravdu..nasiel som to:

Raw (NEF) shooters need to be aware that there is also a difference between the D5100 and D7000 in the data that's produced. For some people it could be meaningful. The D7000 can record with lossless compression, the D5100 only records with visually lossless compression (Nikon's skip-tonal-values-in-the-highlights method). For most images that's not going to be a big deal. Many of us have been trying to show a realistic example of where visually lossless compression clearly produces a worse result and haven't really been able to do so. That's not to say that there isn't a difference and it's not meaningful. It's only to say that it's near impossible to show something (especially once we run it through JPEG to show it on the Web) that everyone would agree looks different that occurs on a regular basis. After all, the compression is visually lossless.

That said, if you're constantly tweaking highlight values, especially trying to pull out micro contrast in the highlights, the D5100 is going to be worse at that than the D7000. It's an extremely subtle thing visually, but when you start trying to move data that is posterized (missing values), there's a crudity to the results that you don't get when you have all the original data to work with.

Shadows are the same on both cameras shooting raw. That's a good thing, as the D7000 (and now the D5100) has almost the best shadow detail in 14-bit raw files of any of the Nikon DSLRs. Not best. Almost the best. That's still pretty darned good. And yes, the D5100 is surprisingly recording 14-bit raw, not 12-bit. That does help keep the shadow detail clean and useful.

takze je to matematicky stratova kompresia..vizualne vo vacsine pripadov nie..

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fatality 2012-06-20 13:06:58+02

príspevok od: RoboK

Síce nemám D5100, ale myslím že na D5100 sa dá nastaviť len komprimovaný RAW. Pozrel som si špecifikácie na nikon.com a tam je uvádzaný RAW compressed nie losseless compressed. Takže je to pravdepodobne v poriadku .

mal si asi pravdu uz vo svojom prvom prispevku,a mas aj teraz,ano je komprimovany s matematickou stratou..nemala by byt vsak vizualna..takze jedine ako si mozem checknut ten nx2 je,ze by mi niekto poslal nekomprimovany raw z trebars D7000..snad sa najde nejaka dobra dusa