<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">The way I see it:<div>Math is the same, but color spaces are different, so we come up with different results. Math is done on different inputs.</div><div><div>Most of my co-workers hate me when they open my After Effects projects because I always change AE's defaults to do blending in linear space. Their "screen mode tricks" don't work in my projects :-)</div><div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Bartek Skorupa</div><div><br></div><div><a href="http://www.bartekskorupa.com">www.bartekskorupa.com</a></div></div></span></span></span>
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<br><div><div>On 7 cze 2014, at 06:17, Troy Sobotka <<a href="mailto:troy.sobotka@gmail.com">troy.sobotka@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><p dir="ltr"><br>
On Jun 6, 2014 5:23 PM, "Sean Kennedy" <<a href="mailto:mack_dadd2@hotmail.com">mack_dadd2@hotmail.com</a>> wrote:<br>
> I've always thought that blending modes were a defined calculations, so they'd be the same everywhere (Blender, photoshop, after effects, nuke, everything...). </p><p dir="ltr">They are not.</p><p dir="ltr">By default, Photoshop sets a unity at 1.0 and assumes all display referred blend modes.</p><p dir="ltr">Nuke by default assumes scene referred blend modes, with no unity point. This can cause a little confusion to PS folks, especially where max() is used instead of 1.0, and leads to irregularities less than <1.0 for display referred imagery.</p><p dir="ltr">Nuke offers a “video space” toggle to use the display referred equivalents.</p><p dir="ltr">Blender should, also being scene referred, use scene referred blend modes, with an optional toggle to use the display referred form.</p><p dir="ltr">All scene referred and HDR compositing is bogged up using the defaults.</p><p dir="ltr">With respect,<br>
TJS</p>
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