![]() ![]() Have you tried the digital fx diffusion? It seems closest to the black diffusion/fx you recommend, but I believe it doesn't have bokeh speckles. Now I would only want it if that effect were intended or there were no light sources in frame. I liked the much more subtle hdtv fx (digital diffusion fx combined with ultracon) for taking the edge off until I shot a window and the flare was too extreme for my taste. I love the non-hd classic soft, but haven't used the hd version. Based on the aliasing I'm seeing with this camera and the general and (for this project) undesirable "crispness" compared with the Alexa or even Dragon at least at a per-pixel level, I don't mind something that bites into the resolution a bit.ĭoes the classic soft wash out the image like an ultracon or is it a controlled flare? I should know this as I've used both, but not carefully. I want a slight diffusion filter for a shoot on the C200. ![]() I feel the same way about the F55, and to a lesser extent the Dragon. The highlights were the next clue, though, so maybe it does have to do with the dynamic range somehow, since the tonality might also be affected by the dual gain or whatever. Recently I A/B'd C300 and Alexa footage used for the same project and it was neither the resolution nor dynamic range that gave the C300 away, but a less "smooth" feeling overall. Thanks, David, I was hoping to get a reply from you!ĭoes the black diffusion/fx filter create speckles in the bokeh? That's one trade off I'd rather not deal with.Įven if the Alexa doesn't have a diffusion filter, it seems to have a soft glow to it by comparison, and that's not just in the highlight rolloff. Take a look at the Black Diffusion/FX filter (the 1/2 is the lightest). Most of the other diffusions have a more pronounced halation, and in fact, many are compound filters with an element to create a misty glow (such as the 1/8 Black Frost that is part of the Schneider Hollywood Black Magics, or the GlimmerGlass that is part of the Tiffen Black Satins.) A Schneider HD Classic Soft also softens with just a bit of a blurry glow to bright areas (the halation is less of a misty glow but is more due to that bright area being blurred and overlaid back on the sharp image). The Tiffen Black Diffusion/FX and the Schneider Radiant Softs are designed to soften with minimal halation, if that's what you want. Everyone has a different taste on which effect they want more of, hence why there are dozens of diffusion filters on the market. Some filters are "mistier" and are designed to cause some halation, which has some effect on lowering contrast (but contrast and black level can be adjusted, it's a digital image after all) and some are designed to soften detail with less of a misty look. If you want to use a mild filter for softening the image from a Red camera, that's fine, but there isn't specifically a filter that will emulate an Alexa look, and if there were something close, it would have to be incredibly subtle like a 1/8 Black Frost. Mostly what you are sensing is how the Alexa gracefully rolls-off overexposure information and color saturation into the clip point, which is more due to its extended dynamic range in the highlights. ![]() It does flare just a little around a bright point of light like a candle flame. The Alexa does not have a diffusion filter in the OLPF. Maybe the #1 strength seems closest to the Alexa? I have no idea whatsoever from this test. I'm tempted to try the digital diffusion fx1 or digital diffusion fx 2 because they lack the ultracontrast filter, but I suspect those strengths might be too strong? It's very difficult to get a read on the level of diffusion here. Maybe I'll get different strengths for different lenses. Of course it probably depends on the focal length and I have no idea how to put a filter behind the lens. I'm not sure if it's the right amount, or slightly too little diffusion. I've tried various diffusion filters none have achieved this perfectly.Ĭurrently the best I've used is the hdtvfx 1/2, however it flares quite strongly at times and the softening is not too pronounced. I've read that Arri likely puts a diffusion filter on their OLPF. There's not much loss in resolution, but it feels rounder and smoother. The smoothing is of higher frequency detail, not an overall softness or decrease in contrast or saturation. It's distinct and even with vintage lenses there's a different quality to the Alexa. I've shot and done post work extensively with all these cameras, it's not something I imagined based on clips online. In my experience, the Alexa has a certain smooth look to its imagery that I don't see with the Red or F5 or C300, for instance, and that I think is meant to emulate film's halation. I suspect this reads like a primitive and poorly-researched request, but I hope it's not. ![]()
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