有个问题有关于BMD新4.6K传感器RAW录制的问题@拍电影 -
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有个问题有关于BMD新4.6K传感器RAW录制的问题
在BMD URSA4.6K以及URSA Mini4.6K的技术列表看到，这两个机器都可以记录4.6K、4K DCI 16：9、4.6K 2.4：1、3K 变形宽荧幕和2K DCI 16：9这几个分辨率的RAW和UHD和HD分辨率的ProRes
那么问题来了，记录这些RAW不同分辨率是在4.6K下根据像素不同所裁切记录，就想Red一样，记录多少，就用像素，
比如记录2K RAW，那么就是在4.6K传感器上只用到2K像素进行记录，还是在4.6K上超采样到2K分辨率进行记录
没去NAB，所以不知道，有谁知道么
理论上raw应该是裁切的。。。。。。mov就不好说了。
blue7 发表于
理论上raw应该是裁切的。。。。。。mov就不好说了。
MOV应该是使用UHD的分辨率下的超采样吧，而且ProRes还有窗口模式能提供至少160fps的升格，
RAW是直接读取传感器上的像素信息进行记录，所以就想到是不是跟Red一样进行裁切，这样的话，拍2K岂不是跟用S16一样，镜头的选择上就有麻烦了
我想做到4.6K的基准ISO是多少？低噪如何。
影约影士 发表于
我想做到4.6K的基准ISO是多少？低噪如何。
基准是800，ISO范围由200-1600，
低照度下可以看看4.6K官方的样片，里头有很多在低照度下的镜头，
还故意拍了很多背光和直接拍到了太阳的镜头，看来太阳黑点已经没有了，
所以对于原来4K的传感器，升级到4.6K还是挺值当的
六公分 发表于
基准是800，ISO范围由200-1600，
低照度下可以看看4.6K官方的样片，里头有很多在低照度下的镜头，
回复很详细，谢谢，补一句，4.6还依然是全局快门吗？
本帖最后由 六公分 于
00:16 编辑
影约影士 发表于
回复很详细，谢谢，补一句，4.6还依然是全局快门吗？
是，不过在支持全局快门的同时，还支持滚动快门模式，
不过在这两种不同模式下，动态范围和最高帧率有些不一样，
在全局快门下，动态范围大致是13.5档左右，URSA最高4.6K RAW下记录最高帧率有60fps，URSA Mini则为30fps
在滚动快门下，动态范围有15档，4.6K RAW能记录到120fps，Mini就为60fps
一般来说，不拍摄动作很激烈的镜头，使用滚动快门还是更多的
六公分 发表于
是，不过在支持全局快门的同时，还支持滚动快门模式，
不过在这两种不同模式下，动态范围和最高帧率有些 ...
谢谢您,知道的真详细，展会上了解到了的吗？
影约影士 发表于
谢谢您,知道的真详细，展会上了解到了的吗？
没去看展，
只是没事看看国外论坛，看看Youtube而已
六公分 发表于
没去看展，
只是没事看看国外论坛，看看Youtube而已
推荐一些youtube账户吧，经常翻墙后不知道干嘛。
好贴，值得回看
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3秒自动关闭窗口2015最新Blackmagic URSA 4.6K高性能数字电影传感器摄影机
14:25:44&&&来源：&&&点击：
Blackmagic Design最新推出Blackmagic URSA 4.6K,高性能4.6K数字电影传感器最新升级传感器以更高分辨率和15挡动态范围大幅提高画质！Bla...
Blackmagic Design最新推出Blackmagic URSA 4.6K,高性能4.6K数字电影传感器最新升级传感器以更高分辨率和15挡动态范围大幅提高画质！
Blackmagic URSA 4.6K
& & 2015年NAB展会：Blackmagic Design今日发布最新高性能4.6K传感器，该传感器可用于URSA高端数字电影摄影机。最新Super 35图像传感器具备4608 x 2592高分辨率，可实现120帧每秒的拍摄速度，其超宽15挡动态范围可与传统35mm胶片相媲美。
Blackmagic URSA 4.6K& 4608 x 2592高分辨率
& & Blackmagic URSA 4.6K将于2015年度NAB的SL219号Blackmagic Design展位上亮相。
& & 此款最新传感器将被用于最新两款Blackmagic URSA摄影机上。Blackmagic URSA 4.6K EF型号售价为$6,995，Blackmagic URSA 4.6K PL售价为$7,495。这两款4.6K版摄影机将于六月起限量销售，并将于七月底到八月份相继大批量面世。
& & 现有Blackmagic URSA用户可以$1,995的价格为EF镜头卡口型号升级到最新的4.6K传感器，或以$2,495的价格为PL镜头卡口型号升级到最新的4.6K传感器。本次&传感器组件升级&将面向用户发售，以便更换其URSA摄影机组件从而升级到新的高性能图像传感器。
& & 此外，现正发售的4K版Blackmagic URSA EF和PL摄影机型号将降价$1,000销售，以便让用户能以更经济的价格购置Blackmagic URSA。也就是说，Blackmagic URSA 4K和4.6K摄影机价格之间的差价和升级到4.6K传感器的价格是相同的。这样一来，用户可先以较低的成本购置4K摄影机，将来不用花费太多就可升级到4.6K图像传感器。Blackmagic URSA 4K EF型号最新售价为$4,995，而Blackmagic URSA 4K PL型号最新售价为$5,495。
& & 这款革命性的4.6K图像传感器可捕捉4608 x 2592的像素，具有超宽15挡动态范围，较很多传统胶片而言有着更高的分辨率和宽容度，有时甚至超越了人眼的动态范围。用户现在可以通过URSA捕捉到前所未有的亮部和暗部细节，从而缔造出最优美动人的电影质感画面。所有文件均可以12bit无损Cinema DNG RAW格式记录，从而最大程度地保留图像数据和质量，以便用于DaVinci Resolve等调色和创意特效软件。广播级质量文件还可以保存为占用最小存储空间且易于后期制作流程的Apple ProRes格式。
& & &我们在2014年推出了URSA，当时的目标就是设计一部可以满足用户所有需求的摄影机，但同时还要兼具前瞻性，以保证用户在将来能够升级到更高的分辨率和更高帧率的传感器，&Blackmagic Design首席执行官Grant Petty说道，&我们兑现了对于URSA革命性设计理念的承诺，并十分期待看到用户们使用这款最新的非凡传感器来进行拍摄。只要升级传感器，就如同重新购置了一部全新的Super 35数字电影摄影机！&
& & Blackmagic URSA是一款高端数字电影摄影机，它有着革新现场工作流程的颠覆性设计，适用于拍摄电影长片、商业宣传片、电视剧集、纪录片以及更多。URSA的设计符合工程学原理，无论是大型的摄制团队还是小规模单人拍摄都可使用。此外，这款摄影机还内置丰富配件，包括超大10英寸翻折式现场监视器、用户可更换的大尺寸Super 35图像传感器，以及支持RAW和ProRes格式的内部双卡录像机。由于传感器和镜头卡口能拆卸更换，待新传感器出现时，用户可为摄影机升级换代。
为摄影机安装海量配件
Blackmagic URSA 4.6K主要特性：
.高分辨率4.6K Super 35mm大尺寸传感器，画面细节完美展现。
.专业的全域快门，可确保平滑的镜头摇移和图像移动。
.高达15挡超宽动态范围，可捕捉更丰富影像细节，呈现电影级画质。
.兼容顶尖的PL或EF镜头。
.配备用户可升级设计，可自行更换传感器和镜头卡口组件。
.内置双卡录像机，使用CFast 2.0卡，保证高画质不间断记录。
.采用开放文件格式，可使用常用非编软件，兼容Apple ProRes和压缩CinemaDNG .12bit RAW等。无特殊文件格式。
.支持以最高Ultra HD的分辨率记录ProRes 4444 XQ、ProRes 4444、ProRes 422 .HQ、ProRes 422、ProRes 422 LT、ProRes 422 Proxy。
.配备所有标准接口，包括两个带幻象电源的XLR Mic/Line音频输入、用于监看.带图文叠加摄影机状态的12G-SDI输出、用于寻像器的独立XLR 4针电源输出接口、12G-SDI监看输入、耳机插孔、LANC遥控以及标准4针12V DC电源接口等。
.内置立体声麦克风用于录音。
.分设3个内置LCD监视器，可用于摄影机设置和元数据录入。超大10英寸翻折式显示屏可提供全分辨率HD监看，具有较宽可视角度，屏幕明亮清晰。
.可以23.98、24、25、29.97、30以及高达60fps的帧率拍摄Ultra HD和1080 HD分辨率视频。支持最高达120fps的4.6K采集。
.配有液体冷却系统，在将来传感器技术升级后还可应对更高帧率拍摄。
.支持三脚架快拆板，可安装V-Mount和Anton/Bauer电池扣板。
.内附完整版DaVinci Resolve调色软件，可用于调色和剪辑。
供货及价格
Blackmagic URSA 4.6K将于六月起限量发售，并将于七、八月份由Blackmagic Design全球各经销商全面发售。RED ONE :: the first 4K digital cinema camera from RED Digital Cinema
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14 Megapixel MYSTERIUM-X(R)
PIXEL&ARRAY
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MAX&IMAGE&AREA
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