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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6622
Location: United Kingdom
Expire: 2014-11-24
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 Posted: Mon Sep 20, 2010 5:59 pm Post subject: Pentax K-5 |
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ManualFocus-G wrote:
http://www.dpreview.com/news/1009/10092020pentaxk5preview.asp
16.3MP and ISO 51200 
Pentax are back in the game 
_________________
Graham - Moderator 
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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CarbonR
Joined: 31 Dec 2008
Posts: 1969
Location: Clermont-Ferrand, France
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| Posted: Mon Sep 20, 2010 6:05 pm Post subject: |
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CarbonR wrote:
16.3MPix on a APS-C sensor ? Yerk, awfully unsusable if you are used to stop down at more than f/5.6 
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Cameras : Canon 5D, Pentax K100D, Pentax 6x7, Spotmatic
Lenses : 15mm to 1000mm (24x36)
My websites : [FR & ENG]Takumar - the eyes of the Spotmatic : info about all Takumar lenses // Kogaku - My photo site
I am selling : Takumar lenses and rare Pentax bodies, pm me if you're interested in something [MFLenses feed-back]
Information on Takumar lenses with samples :
Wide angle : Takumar 15/3.5 15mm, Takumar 17/4 17mm, Takumar 18/11 18mm, Takumar 20/4.5 20mm, Takumar 24/3.5 24mm, Takumar 28/3.5 V1 28mm, Takumar 28/3.5 V2 28mm, Takumar 35/2 V1 35mm, Takumar 35/2 V2 35mm, Takumar 35/2.3 35mm, Takumar 35/3.5 35mm, Takumar 35/4 35mm
Standard : Takumar 50/1.4 V1 50mm, Takumar 50/1.4 V2 50mm, Takumar 50/3.5 50mm, Takumar 50/4 50mm, Takumar 55/2 55/1.8 55mm, Takumar 55/2.2 V1 55mm, Takumar 55/2.2 V2 55mm, Takumar 58/2 58mm, Takumar 58/2.4 58mm
Short tele : Takumar 83/1.9 83mm, Takumar 85/1.8 85/1.9 85mm, Takumar 85/1.8 85mm, Takumar 100/2 100mm, Takumar 100/3.5 100mm, Takumar 100/4 100mm, Takumar 105/2.8 V1 105mm, Takumar 105/2.8 V2 105mm, Takumar 120/2.8 120mm
Telephoto : Takumar 135/2.5 V1 135mm, Takumar 135/2.5 V2 135mm, Takumar 135/3.5 V1 135mm, Takumar 135/3.5 V2 135mm, Takumar 150/4 V1 150mm, Takumar 150/4 V2 150mm
Long tele : Takumar 200/3.5 200mm, Takumar 200/4 200mm, Takumar 200/5.6 200mm, Takumar 300/4 V1 300mm, Takumar 300/4 V2 300mm, Takumar 300/4 V3 300mm, Takumar 300/6.3 300mm, Takumar 400/5.6 400mm, Takumar 500/4.5 500mm, Takumar 500/5 500mm, Takumar 1000/8 V1 1000mm, Takumar 1000/8 V2 1000mm
Zoom : Zoom-Takumar 45~125/4 , Zoom-Takumar 70~150/4.5 , Zoom-Takumar 85~210/4.5 , Zoom-Takumar 135~600/6.7
Achromatic : Ultra-Achromatic-Takumar 85/4.5 , Ultra-Achromatic-Takumar 300/5.6 300mm |
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ManualFocus-G
Joined: 29 Dec 2008
Posts: 6622
Location: United Kingdom
Expire: 2014-11-24
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| Posted: Mon Sep 20, 2010 6:59 pm Post subject: |
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ManualFocus-G wrote:
| CarbonR wrote: |
| 16.3MPix on a APS-C sensor ? Yerk, awfully unsusable if you are used to stop down at more than f/5.6 |
Lucky we're all nuts enough to shoot these old lenses wide open then 
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Graham - Moderator
Shooter of choice: Fujifilm X-T20 with M42, PB and C/Y lenses
See my Flickr photos at http://www.flickr.com/photos/manualfocus-g |
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Anu
Joined: 14 Apr 2009
Posts: 879
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| Posted: Tue Sep 21, 2010 3:54 pm Post subject: |
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Anu wrote:
I wonder if the sensor in K5 is actually the new Aptina-sensor, and not the speculated Sony sensor - I quickly looked at the physical sensor sizes mentioned on DPR-pages (yes, the worst possible source, I know) and the new Nikon had different measurements compared to the new Pentax, indicating a possibility of differnet imaging devices.
About the ISO 50k - it is an extended ISO, meaning that for raw shooters it just loses highlights compared to the highest regular ISO, without any benefits. JPGers might find it useful though, especially if the curve used changes with the extended ISOs instead of using just rolling the bits in a quick and dirty way.
***EDIT***
Ah, the Aptina will only be available Q1 next year, so it's a Sony sensor after all (almost certainly). |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Wed Sep 29, 2010 12:00 pm Post subject: |
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Spotmatic wrote:
I really long for this camera! It seems that it outperforms my trusty K-7 in many aspects.
In the meantime I have seen some samples and it appears that the sensor is able to reach the noise levels of FF DSLR's. Interesting times are ahead indeed.
From the Dpreview.com forum (GordonBGood is a well-established member there with a lot of experience on the technical side of sensors):
| Quote: |
SpartanWarrior wrote:
Gordon how do you think the K5 will fair in noise and DR to say the 5D II? thanks;)
The K-5 will "blow the doors off" the Canon 5D Mark II as to low ISO Dynamic Range and will even surpass the Nikon D700 in this respect.
However, there is no replacement of a high electron count well capacity as to the Signal to Noise Ratio (SNR) in the brighter tones at higher ISO's, where although the K-5 may appear to surpass the performance of these 35 mm. full frame cameras, it will be done by means of Noise Reduction (NR). There is simply no replacement for being able to gather about twice the number of electrons per photosite for high ISO performance for the brighter tones. That said, the differences aren't all that great as twice the number of electrons only make a real difference in the brightest tones of about a half stop in extra usable high ISO without NR. In addition, the 5D M2 has yet a larger number of photosites, so there will be further benefits to its images when viewed at the same viewing/print size as those of the K-5.
Regards, GordonBGood
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Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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