DVL-Digest 1071 - Postings: Index Broadcast fonts - (2) Loss of Pixels from radiation / Sony data Broadcast fonts - "Perry Mitchell" From: Vidiot >Does anyone have suggestions on fonts that look good on a TV screen? In the >past I found that "thick" fonts without serifs are the best. Is there a CD >collection that has broadcast-friendly fonts? Helvetica is such a font and you should already have it. Broadcast fonts - "Perry Mitchell" A couple of tricks if you are producing captions in Photoshop or similar: 1) Simply process a 1 pixel vertical motion blur filter on the finished text. This will remove any 'twitter' from too sharp edges and serifs 2) Select all the text, give it a generous blur, then select 'Levels' and throttle the black and white input levels to restore sharpness to an appropriate point. In the process, all the over sharp corners and serifs will get a nice 'rounding'. You need to find the actual values by inspection, and then make a note for future use. Perry Mitchell Loss of Pixels from radiation / Sony data - "Perry Mitchell" From: Bill Finch Sony's current "Network" magazine talks about the use of the HDW-700A HDCAM in space applications. They say that HD (1080i) TV cameras typically lose between 5 and 15 pixels per day from "space radiation". The cameras can correct for 500 missing pixels and after that the image degrades "sadly". Can anyone make a guess at how radiation in space compares with US and European airport X-Ray machines? X-Ray energy density is higher than space background but for shorter times. Also the energy level of certain space radiation species is higher per quantum than X-Rays. I have no idea of where to go from there. Does this all mean that typical DV cameras lose pixels in airport X-Ray machines? Has anyone experienced pixel loss that can be traced to X-Rays? I have a VX2000 that has been through about 35 X-ray cycles with no pixel loss yet. Am I missing something or just living on borrowed time? Should I try passing the camera around the X-Ray machine next time. My experience is that some inspectors will pass the camera and some will insist in the X-Ray treatment. Inquiring minds want to know. (diese posts stammen von der DV-L Mailingliste - THX to Adam Wilt and Perry Mitchell :-) [up] |
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