At the root of many forum debates comes the inevitable confusion and pointless bickering over what a certain sensor size means for your images and how they are “cropped.” Don’t worry, we’re not going there. Though crop factor is here to stay amongst digital cameras, so it’s best we get to grips with it.
Now, I’d definitely recommend reading one of our articles on Crop Factor, like this one here:
From here you’ll have a very good understanding about different sensor sizes in digital cameras and more importantly, what they mean. Anyway, amongst all the digital sensor noise from the crowds, there will inevitably come a point where you need to calculate the full-frame equivalent focal length and/or f-stop.
mmCalc – The Crop Sensor Calculator
The Crop Sensor Calculator
Welcome to the mmCalc Crop Factor Calculator. A very handy online tool to quickly convert equivalent focal lengths and f-stops to their Full Frame counterpart (36 x 24mm – the largest sized sensor found in a DSLR).
You could be using an APS-C Crop Sensor camera (23.6 x 15.8mm Sensor) applying a crop factor of 1.5x to 1.7x (Nikon 1.5x and Canon 1.6x) or something smaller still like a Four Thirds camera (17.3 x 13mm Sensor), in which case you’ll have a 2x Crop Factor to consider as the sensors are one-quarter the size of a full frame sensor.
With that brief explanation out the way, you could find the tool really very handy indeed – this isn’t to say it’s something you’ll be continually referring to, but the mmCal tool a great easy-to-use calculator and contains a well-explained description of your calculation so you understand the information being presented to you.
At the end of the day, you’re going to at the very least learn more about camera sensors, their sizes and why these conversions even take place anyhow.
Crop Sensor Calculator and Further Resources
Further Learning
It could well be a good idea to ensure you’re covered when it comes to knowing how your DSLR works and learning some Essential Photography Skills. That’s where this easy step by step guide for beginners is a great place to start.
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