![]() Here is my very basic, very non-scientific, explanation. Aside from being one of my favourite words in the world ( flange! *snort*) it’s quite important to grasp the basic idea. One more boring but necessary thing to understand about different brand lenses is flange distance. Passive adapting can be brilliant for macro. Suddenly I have this INSANE 180mm macro lens that’s just stupidly close to the subjects. I’ve passively adapted a Sony A mount Tamron 90mm f2.8 macro lens to my m43 gear. I have used passive adapting to my advantage in the past though. In fact, getting adapted lenses to cover the more conventional focal lengths - like 35mm or 50mm in full frame terms - is very hard because of the cropping business. If you have a 100mm portrait lens for instance, it will suddenly become a 200mm unwieldily mess when it’s passively adapted. This method can make your images less sharp, though not unusable by any means.īut it can also make otherwise normal lenses completely unusable in a different way. This method gives you that full 2x crop, which we’ve mentioned can be a pro and a con. You essentially buy a cheap metal ring that swaps the mount type from whatever brand lens you are using to micro four thirds. Here are the two (three?) ways you can mount other brand lenses onto your micro four thirds system. Meaning if there are any discrepancies in the glass, they’ll stand out a mile on the m43 system if you adapt the glass passively. See, the micro four thirds sensor is suuuuper pixel-dense compared to a full frame sensor. The downside is the image clarity may suffer. If you want to get a zoom lens on the cheap, you can use this to your advantage and effectively double any focal length you throw at your camera. This can be both a pro and a con, depending on what results you want. Does that make sense? It isn’t really important to know but that’s what’s going on when you adapt a full frame lens to a smaller sensor camera. It gives the illusion of zooming in, but it isn’t. If you see this rather slap-dash illustration I made, you’ll see that the micro four thirds sensor is only capable of seeing a small portion of the scene in the centre of the lens. The crop factor isn’t to be confused with zoom, though. What does that mean? Well, If you put a full frame 50mm lens onto a micro four thirds body, you’ll get a 2x crop factor, making the actual focal length 100mm. ![]() Without boring you to tears, the micro four thirds sensor is much smaller than a full frame sensor. This article contains Amazon and eBay affiliate links. So here’s a beginner’s guide to adapting lenses.Ĭrop Factor: what is it and why does it matter? But if this is something you haven’t tried before, it can be a bit daunting. One of the greatest things about the micro four thirds camera system is how easy it can be to adapt other brand lenses and even vintage lenses to the system.
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