BenCoughlan Posted January 15, 2015 Share Posted January 15, 2015 So I have a de-squeeze question when in resolve. I shot a few test clips 5kHD - Red epic. and I want to de squeeze them in resolve. ( I will set my correction node to timeline and adjust as a whole)Does anyone know what the parameters are that I need to set to get the correct de-squeeze? Is it better to stretch the height (i.e change the height parameter). Or, Stretch the width and then scale down using the zoom parameter?Images attached. Quote Link to comment Share on other sites More sharing options...
BenCoughlan Posted January 15, 2015 Author Share Posted January 15, 2015 Here is the image incase anyone cares. This was a guestimate desqueeze. 5k HDREDCODE - 5:1HELIOS 58mm - f.2 (WIDE OPEN)ND - SCHNEIDER IRND 0.9 Quote Link to comment Share on other sites More sharing options...
BenCoughlan Posted January 15, 2015 Author Share Posted January 15, 2015 Iscorama pre 36 by the way (1.5x on 5kHD so 16:9 frame size) Quote Link to comment Share on other sites More sharing options...
nahua Posted January 17, 2015 Share Posted January 17, 2015 I'll check my footage with my Isco 36. In actuality I think I used a 1.33x desqueeze which is weird. This is using GH4 16:9 4K. Quote Link to comment Share on other sites More sharing options...
BenCoughlan Posted January 17, 2015 Author Share Posted January 17, 2015 Surely that didn't give you the correct de-squeeze tho? Quote Link to comment Share on other sites More sharing options...
BenCoughlan Posted January 17, 2015 Author Share Posted January 17, 2015 Hi Guys.For those of you that are interested. If you change the clip attributes to DVCProHD pixel aspect ratio in resolve. You het a perfect desqueeze without having to scale or warp. Vey handy.Thanks to Chris Elkerterton for the heads up. nahua and Chris Elkerton 2 Quote Link to comment Share on other sites More sharing options...
nahua Posted January 18, 2015 Share Posted January 18, 2015 I think DVCProHD is 1.5x? Although your scale and zoom worked just as well too. Quote Link to comment Share on other sites More sharing options...
nahua Posted January 18, 2015 Share Posted January 18, 2015 If I remember the Iscorama (and most all anamorphics) aren't 1.5x throughout the range. In fact it's more like 1.4x. 2x anamorphics are more like 1.8x. I've tested different aspect ratios and give me your opinion on what's the best ratio. Presented is the original 4K unsqeezed, 1.33x, 1.4x and 1.5x.GH4 4K Original 16:91.33x ratio1.4x ratio1.5x ratio Quote Link to comment Share on other sites More sharing options...
nahua Posted January 18, 2015 Share Posted January 18, 2015 I prefer the 1.4x version. Thoughts? Cosimo murgolo 1 Quote Link to comment Share on other sites More sharing options...
Chris Elkerton Posted January 18, 2015 Share Posted January 18, 2015 I prefer the 1.4x version. Thoughts?I see your point. When shooting faces I sometimes 'under squeeze' a bit (sometimes too much). I guess it a subjective thing. I think sometimes we get a distorted view of our images because we have seen the original. Plus i think it depends on different factors, focal length, subject distance, talking lens. It can make your workflow tricky.If I saw the x1.5 version of your shot in something, I don't think it would leap out as 'wrong'. But maybe the x1.4 looks more natural.its a weird one, but it makes shooting anamorphic more fun. nahua 1 Quote Link to comment Share on other sites More sharing options...
BenCoughlan Posted January 18, 2015 Author Share Posted January 18, 2015 Its very hard to say without seeing the true / original image, but for sure the 1.4x looks better but she might have just had a round face! I grade a lot of music promos and its not uncommon for the Label to ask to give a 5-10% squeeze on the footage horizontally to make the artist look slimmer. Happens and awful lot, especially with female artist. nahua 1 Quote Link to comment Share on other sites More sharing options...
ken Posted January 18, 2015 Share Posted January 18, 2015 IMO, all because of the shooting distance. Too close (between anamorphic front and rear glasses too) will reduce the ratio, so that is why we need +0.5 diopter for close shooting.Here is the 3:1 sample took with ISCO integrated lens, which many people call it as 1.7x, 1.9x. But actually, really is 2x, IMO. Quote Link to comment Share on other sites More sharing options...
Rcorrell Posted January 19, 2015 Share Posted January 19, 2015 test test test... mine came out to be a 1.437x but works great when paired with 1920x1152. I process my timeline for 2754x1152 and you get a dead on 2.4.0. when de-squeezed. Quote Link to comment Share on other sites More sharing options...
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