[opendtv] Re: coverstory_8_11_14.pdf
- From: Craig Birkmaier <craig@xxxxxxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 21 Aug 2014 15:30:27 -0400
Happens every day. Here's a list of features shot in recent years using digital
acquisition.
http://en.m.wikipedia.org/wiki/List_of_films_shot_on_digital_video_prior_to_2015
Yup. Film grain filters are widely used in Photoshop, After Effects, and other
image processing apps.
Regards
Craig
> On Aug 21, 2014, at 1:53 PM, Cliff Benham <flyback1@xxxxxxxxxxx> wrote:
>
> So lets see how a digital image compares blown up to "Movie Theater Screen"
> Size.
>
> By the way, some movie makers choose to make grain more apparent to achieve a
> certain
> artistic look in a film.
>
> Cliff
>
>> On 8/21/2014 8:16 AM, Craig Birkmaier wrote:
>> Yup. It is why film has a grainy appearance when shot at low light levels or
>> blown up too much.
>>
>> Regards
>> Craig
>>
>>> On Aug 20, 2014, at 6:25 PM, Cliff Benham <flyback1@xxxxxxxxxxx> wrote:
>>>
>>> Remember, the distribution of grains of silver on a photographic film are
>>> *RANDOM*
>>> while those on an electronic sensor are *NOT*.
>>>
>>> This distinction makes quite a difference in image quality.
>>>
>>> Cliff
>>>
>>>> On 8/18/2014 9:30 AM, Craig Birkmaier wrote:
>>>> Well said Bert.
>>>>
>>>> Regards
>>>> Craig
>>>>
>>>>> On Aug 17, 2014, at 9:13 PM, "Manfredi, Albert E"
>>>>> <albert.e.manfredi@xxxxxxxxxx> wrote:
>>>>>
>>>>> Cliff Benham wrote:
>>>>>
>>>>>> Here is a quote from someone in Hollywood writing on the TIG website.
>>>>>>
>>>>>> "Commercially available HD images are all of 14 years old. When HD
>>>>>> is 100 years old like film is, considering how far things have come
>>>>>> in just 14 years, I expect that its capabilities will *far* surpass
>>>>>> what the very last of the neg could do.
>>>>>>
>>>>>> They just need to move away from single sensor Bayer filtered crap
>>>>>> where colors are made up out of math. And yes, I said Bayer
>>>>>> filtered crap."
>>>>>
>>>>> But, Cliff. In color film, colors are *also* made up out of math. The
>>>>> only significant difference is that film grain doesn't consist of a
>>>>> deterministic pattern or pixels, as digital sensors have.
>>>>>
>>>>>> And remember: Digital will never be as good as Analog because
>>>>>> digital always throws away part of the image. Always.
>>>>>
>>>>> As does analog. The problem is the same. You need to constrain channel
>>>>> bandwidth, for practical implementations. In analog, your tools are
>>>>> simpler and more crude, that's all. So you do things like limit the high
>>>>> frequency content more, limit the color saturation more, limit the frame
>>>>> rate more (e.g. with interlacing tricks), and that sort of thing.
>>>>> Resulting in that soft, unsaturated image that we were led to believe was
>>>>> the best TV could do.
>>>>>
>>>>> Digital only affords more sophisticated techniques. For example, with
>>>>> digital, not having to transmit over and over again a part of the scene
>>>>> that has not changed conserves bandwidth requirements. That bandwidth can
>>>>> instead be put to use in transmitting sharper edges than the analog
>>>>> system. And/or, more intense colors. And/or, a whole lot of extra program
>>>>> material.
>>>>>
>>>>> Bert
>>>>>
>>>>>
>>>>>
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