If the SD1 actually comes out early next year, and if it delivers on IQ and quality I'm buying one. I don't mind treating it like a medium format camera since I'm already used to that. It would sure be a cheaper alternative to a MF digital back, and perfectly fine for the size prints I want to produce.Who moves to Sigma ? Or already has ?
Herman read this review (prelim) the new Sigma SD1 DSLRMy conclusion: Sigma has the superior sensor, right.
Who moves to Sigma ? Or already has ?
Let's face it - the AA filter is no good. Software should be able to play that role now. Minimizing (Olympus E-PL1) or removing (Sigma, Leica M9) the AA has only positive benefits. Allow the detail to come through!The Fovian has advantages no doubt but I don't see myself ever going to one after all the Leica M9 uses a Bayer sensor ... and they should know
Software can't do what AA filters do - it's impossible to recreate anti-aliasing in post-production due to physics. Yes, there are AA filters in software packages, but it's not the same thing as a low-pass filter in front of the sensor.Let's face it - the AA filter is no good. Software should be able to play that role now. Minimizing (Olympus E-PL1) or removing (Sigma, Leica M9) the AA has only positive benefits. Allow the detail to come through!
That's exactly the case. I'm not an expert on the matter, but my understanding is that since RGB sensors in a Bayer Array are in an... array, they need to be combined to yield a single color pixel. This is more prone to moire than Foveon sensors, where the RGB sensors are on top of each other. Quick googling seems to confirm this - Foveon doesn't have color moire, but does suffer from luminance moire.Thanks Feppe. So that would imply there is more to Foveon that just a lack of AA filter. I wonder if the sensor design avoids moire issues. And I wonder what they do in the M9 - do the micro-lenses deal with moire?
It's not a high ISO camera, nor is it a fast focus camera, nor is it a fast frame rate camera. Think of it as a small medium format digital back. It's meant primarily for studio work, landscapes, not very fast-moving 'action' and people. Foveon sensors need a lot more light (they use up 3x the amount of light per area), so generally their ISO settings/range is quite low (up to 800, perhaps 1600 but probably noisy even at those settings). It remains to be seen how this new sensor design deals with higher ISO settings. If you shoot stills and generally stick below ISO 800 (like I do), often on a tripod, this is the camera for you.Thanks for the replies.
How does the Foveon sensor deal with high ISO settings?