有很多方法要做ayx大小没有买专门的macro lens。
我们之前有过extension tubes, but there is another option that uses the same principle.
在这里，我们将向您展示如何为极端宏观摄影使用宏观波纹管。ayx大小
[读者支持专家的照片。Expertphotography上的产品链接是推荐链接。如果你使用其中一个并买东西我们会赚一点钱。需要更多信息？看看如何在这里工作。]
What Is a Macro Bellows?
波纹管是相机和镜头之间的灵活的延伸机制，就像手风琴一样。
Back in the old days, photographers used them for focusing.
在当今的相机设置中，通过移动特定镜头元件来实现聚焦，而不是通过移动整个镜头来实现。
波纹管可以帮助聚焦更接近，使受试者带到寿命尺寸和超越。它通常用于宏观摄影。ayx大小
与延长管相比，波纹管的优缺点
You might recognise that extension tubes work similarly. You place them between the camera and the lens, and by increasing the distance, they increase magnification.
那么为什么选择一个人？
宏观波纹管的优点
A macro bellows is灵活的。延伸管具有固定长度。例如，我的鞋子管是12mm，25mm和36mm。当然，你可以组合它们，但这涉及拆卸和重新组装设置。
波纹管在其范围内平滑可控。它允许通过转动旋钮轻轻聚焦。
波纹管是长。与延长管的70mm-ISH总限平相比，我使用的波纹管延伸至150毫米。
波纹管也直接安装在一个三脚架，这意味着我可以将波纹管锁定到三脚架板上。我还可以在任何一端添加其他齿轮。如果我想切换相机，或包括管子，我不必从三脚架上删除整件事。
In this setup, I attached the lens to the front mount of the bellows and added extra tubes between the bellows and the camera.
宏观波纹管VS延长管的缺点
It’s not all roses, though.
First, I struggled to find a bellows that transmits electronic signals, even though it’s not physically impossible (it could be done with a separate cord).
This means that not only will the lens lackautofocus。更重要的是，它也缺乏光圈控制。
要在电子控制镜头上设置所需的光圈，您必须按下DOF.取出镜头时相机上的预览按钮。光圈锁定在其设定位置，直到您将镜头重新连接到相机机身。这个过程是细致的，不切实际。
因此，我建议使用Bellows完全手动镜头。在下面的第二个图像上，我附上了一个葡萄酒Takumar 50mm f/1.4lens to the bellows. I stopped it down to f/11 though, to get acceptably锐利结果。
其次,他们是唯一可行的较轻的齿轮。You’d have to pay a very hefty price for a bellows that can steadily hold the setup I attached to it below.
The weight of a Canon 100mm macro lens is too much, and so is the weight of the5D MKIII.另一方面。你可以看到它略微弯曲：
我发现使用Takumar镜头具有更加可行的镜头1300D相机;这个套件只能衡量重量的一半。
如何用波纹管计算极端关闭放大倍数
You can use the same math as with extension tubes to calculate the magnification of your setup.
You can calculate with this formula:
New Magnification = nM
原始放大镜头= m
Total Extension = T (in mm)
Focal Length of Lens = F (in mm)
nm = m + t / f
I’m using the 50mm Takumar prime and the bellows extended to its maximum of 150mm. Let’s see the calculation:
nm = 0.15 + 150/50
nM = 3.15
所以，我有一个3.15倍的放大率与这个简单廉价的设置。这是一片叶子从非常接近的方式。
这是波纹管延伸到40毫米。
齿轮推荐
对于佳能EF Mount，我推荐Fotodiox Bellows.。它的建立比大多数竞争更好，而是根本不把重型设备贴在一起。
如果您想使用加权装备，请考虑为您的三脚架获得长板。它将有助于稳定波纹管。
这个is primarily for Arca-type tripod heads, but you can screw it onto any other head, too. It helped me keeping the 5D MkIII and the 100mm macro lens steady.
Conclusion
Although it has limitations, a bellows is a powerful tool to create extreme macro images.
If you have good-quality old lenses, it might be the perfect opportunity to revive them.
Never hesitate to experiment, macro photography is an excellent field to explore!
