Question about Sony Cyber-Shot DSC-S75 Digital Camera
Can anyone enlighten me as to the 14 bit A/D converter? Is that an internal bit depth or an external bit depth? In otherwords, will I get to work with all 14 bits/pixel in Photoshop, or is it just used inside the camera for processing, resulting in only the standard 8 bits/pixel available in Photoshop. Thanks for your help! I preparing to make my first digital camera purchase and want to make sure I fully understand everything first! -Sean
Posted by Anonymous on
To explain a little further on whether the 14-bit DXP makes a difference with the S75, it was described to me this way by a knowledgable individual: "Having a good ADC (analog to digital converter) means you can represent that larger dynamic range with finer "steps" than you would with a lower quality ADC. Typically high bit ADC's are matched with CCD's with good dynamic range. Remember, those 14 bits are at the end of the day downsampled to 8 bits to generate the JPEG/TIFF. "To answer your question a 10 bit ADC should be more than capable of doing the same job, you'd probably have to look VERY closely at a fine gradient to see any difference, and certainly downsampled to 8 bits there shouldn't be any difference." Here is a Sony chart, reproduced and enlarged to illustrate what was said above. Sony claims that their 14-bit DSP is going to produce a better image, but you will really see it in gradients and in shadowed areas. The steps should be finer, if that means anything.
Posted on Sep 11, 2005
All of your pics are output at 8 bits/pixel, so the 14 bits are related to internal processing. For your purposes in Photoshop, this won't really matter as you'll be dealing with either a JPEG or with a TIFF image, both of which are 8 bits/pixel. What is more important and that you want to makes sure of is that your images are well exposed, well saturated, well focused, and not overly sharpened.
Posted on Sep 11, 2005
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