原文：I'll start this review by making it clear that if your goal is to get the best projector for the price, either for home use or anywhere there is ambient lighting, then you can do better. But if you want something that is ultra-portable and still very good in a dark room, this projector is great.I ha
ve used both the Smartbeam and Celluon Picopro. If you use these projectors in their intended application, you will be happy. The best environment is a DARK room. Pitch black. Bedroom at night. Any light coming in will degrade the image. A phone screen, a nightlight, fireplace going...those will all wash out the image. That's not a fault of the projectors per se, just a limitation for projectors this small. However, in a dark room I'm using this to project to an 8 foot screen and the brightness is perfectly fine. Once your eyes adjust you will probably be happy. I'm using a bed sheet as a projection screen which loses some light due to bleed through. If you have a proper screen it will be even brighter. But again, if you're after a BRIGHT image and not ultra-portability, you can do better for the price. Despite the higher lumen rating on the Smartbeam, the Celluon and Sony are about the same brightness if not brighter, and with better contrast. The image quality is excellent, you will marvel at how something so tiny can make such a high quality image.Both the Sony and Celluon use the same optical engine, so I will start by comparing the laser scanning tech of the Sony/Celluon vs. the Smartbeam (LCOS).The Smartbeam is a good projector, but has a few dings against it. The image is good contrast and resolution, but less of both than the Sony/Celluon. The vertical offset is nice, something neither the Sony/Celluon have. Vertical offset means that if you put the projector on a table, the image is uniformly shifted up so that the bottom of the image is still above the table surface. This is built into the optical system and not adjustable. With the Sony/Celluon, the table will cut off half the image.However, the Smartbeam has no adjustments of any kind so you really need to get a third party mount/tripod in order to put the image in the right place. The LCOS technology also suffers a little from light bleed. When the projector is on, there is a faint amount of light that bleeds through to the blacks and a bit around the image due to the optical engine. The Sony/Celluon do not have this problem. Think of an LCD vs an OLED screen, same sort of thing. On the other hand, the Smartbeam suffers less from the rainbow effect since it is not scanning a laser across the screen like the Sony/Celluon. I can notice this if I move the projector quickly, wave my hand in front of it, etc... But that isn't how I use the projector. I don't notice it when watching anything and scanning my eyes across the screen. But - some people are very sensitive to this so YMMV.The Celluon projector is quite nice, and comes with an included stand which is a big plus. However, vs. the Smartbeam the image has some minor registration problems. Lines that should be crisp and black (I watch a lot of Archer) are tinted and fuzzy due to the lasers not quite lining up correctly. There is no adjustment for this with the Celluon.Enter the Sony. Not only does it come in a fantastically sleek, aluminum package, but it has a breadth of menu adjustments. You can flip the image horizontally and vertically, adjust keystoning horizontally and vertically (up to 30 degrees either way), adjust the laser registration to eliminate the fuzziness I spoke of above, and more. It's an excellent interface. The Smartbeam/Celluon have no menu system whatsoever. The quality Sony has been known for in (most) of their products comes through here. The USB charging port for your phone or what have you, and full sized HDMI port (vs. microHDMI on the other two) are very welcome. One less adapter. Although I suppose the cable is a little bulkier if you are after ultra portability. Up to you to decide.The Sony also has no tripod mount so you'd need a 3rd party mount, but the keystone adjustments more than make up for this in most situations. Even with a tripod it can be hard to get a straight image without keystone adjustments. That feature alone makes the Sony a winner, considering it has the same optical engine as the Celluon with even better image quality. And it is slightly smaller than the PicoPro.All of these projectors are very similar, but the Sony takes the cake. I will be returning the Smartbeam and Celluon in favor of the Sony. Consider the Sony to be the same projector as the Celluon, for the same price, with better image quality, tons of adjustment options, and a sleeker, better looking package.Highly recommended.
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译文： 我要开始为这个产品写评论了，明确指出，如果你是为了在这个价格上得到最好的投影机，那无论是在家里使用或是在其他任何需要投影仪的地方，你都可以得到更好的效果。但是如果你想要一个超便携的投影仪，在黑暗的房间里也能有很好的效果的话，这台投影机是非常棒的。
我已经用过了Smartbeam和塞路恩的投影仪。如果您用这些投影机里的预置应用的话，您将会感到很高兴的。最好的使用环境就是在一个黑暗的房间里。或者是沥青黑色。在晚上的卧室里用。任何光线都会降低图像质量。手机屏幕，夜灯，壁炉......这些都将淡化图像质量。这不是投影机本身的问题，只是投影机光线的一个限制。然而，在一个黑暗的房间里，我使用这个投影到8英尺左右的屏幕，亮度非常合适。一旦你的眼睛适应了，你可能会很高兴的。我用床单来作为投影屏幕，由于上面沾有血而弱化了一些光线。如果你有一个合适的屏幕的话，它应该会更亮。但是，如果你的投影仪光线很亮，而不是超便携的，在这个价格上，你可能可以买到更好的投影仪。尽管Smartbeam的亮度更高，但塞路恩和索尼的亮度如果没有更高的话，对比度也会更好的。图像质量非常好，您会惊叹于如此之小的东西都可以有如此高质量的图像。
索尼和塞路恩都使用了相同的光学引擎，所以我将首先比较索尼、塞路恩和Smartbeam（LCOS）的激光扫描技术。
Smartbeam是一个很好的投影仪，但有一些它不兼容的东西。图像的对比度和分辨率都很好，但比起索尼/ 塞路恩都要低一些。但是光线的垂直偏移很好，索尼和塞路恩都没有的。光线的垂直偏移量表示如果将投影机放在桌面上的话，则图像就会均匀向上移动，以使图像的最下边缘都在桌面上方。这是建立在光学系统上的，是不可调整的。就像索尼和塞路恩一样，桌子将阻挡一半的图像。
然而，Smartbeam没有任何可以调整的地方，所以你真的得买一个第三方设备或者三脚架，以便可以将图像放在正确的位置上。 LCOS技术也因光线流失会受到一些限制。当投影机开启时，由于光学引擎的作用，会有微弱的光线渗透到黑色区域和图像周围。索尼和塞路恩没有出现这个问题。LCD和OLED屏幕，也是一样的。另一方面，由于不像索尼和塞路恩那样在屏幕上有扫描的激光，所以Smartbeam受到彩虹效应的影响较小。我可以注意到，如果我快速的移动投影仪，在投影仪的前面挥手等都没有影响，但是我不会这样做。在观看任何东西、或在屏幕上扫视时，我都没有注意到有出现什么东西，。但是 - 有些人对YMMV的效果非常敏感。
塞路恩投影仪相当不错，还附带了一个很棒的支架。但是，与Smartbeam相比，图像显示也有一些小问题。由于激光器没有完全正确的排列，所以本来应该是清脆和黑色的线条（我注意了很多）变成了有色的和模糊的。但是塞路恩不能做出任何调整。
说说索尼吧。它不仅有一个非常光滑的铝制包装，它还有一个很广的菜单调整范围。您可以水平和垂直翻转图像，水平和垂直调整梯形（任意方向上最多30度），调整激光配准以消除上面提到的模糊性等等。这个界面很好。 Smartbeam和塞路恩没有任何菜单系统。索尼在其大部分产品中为大众所熟知的产品品质都来自这个地方。您的手机的USB充电端口或有其他什么接口，和全尺寸的HDMI端口（与其他两个microHDMI相比）是非常受欢迎的。尽管少一个适配器。虽然我认为不管它是不是超便携的，那个电缆都有点笨重。不过买不买是由你决定的。
索尼也没有三脚架安装，所以你也需要第三方的支持，但在大多数情况下，梯形失真调整可以弥补这一点。就算使用三脚架，如果不进行梯形失真调整的话，也很难获得平直的图像。索尼的这一特点使索尼成为了赢家，因为它拥有与塞路恩相同的光学引擎，并且具有更好的图像质量。而且还比PicoPro略小。
所有这些投影机都非常相似，但索尼拿走了市场份额的大头。我将把索尼的Smartbeam和塞路恩退回去。考虑到索尼与塞路恩的投影仪是相似的，价格相同，图像质量也更好，调节选项数量更多，而且外观更美观。
所以强烈推荐给你们。
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