Fujifilm GFX Crop Factor and GF Lens 35mm Full Frame Equivalent Focal Lengths

The Fujifilm GFX mirrorless medium format system has gone from strength to strength in recent years. What was once a limited lens selection has now been filled out with focal lengths from 23mm all the way up to 250mm, with no gaps along the way. What’s more, there are now specialist lenses amongst the lineup, such as the GF 120mm macro and the stunning GF 80mm f/1.7. The launch of the original 50MP GFX 50S was something of a revolution in the industry. Never had there been a more affordable way to get into digital medium format photography. While Pentax …

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Did You Know That Canon Has Three Different Sizes of APS-C Sensor?

I thought I’d write a quick post about this because it caused me some confusion recently while I was creating some resources on calculating field of view and angle of view for camera lenses. The calculations for this require the dimensions of a camera’s sensor, and while working on the data list for Canon lenses I couldn’t figure out why my numbers weren’t quite matching some of those that I had come across on Canon’s own website. A little digging back through archives revealed to me that Canon actually uses three different sizes of APS-C sensor, although I wasn’t able …

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Common Digital Sensor Sizes and Crop Factors

I was recently writing about the Fujifilm GFX System sensor size and crop factor, and I thought I’d create this resource to compare the most common digital sensor sizes and resulting crop factors on the current market. Visual Digital Sensor Size Comparison On the left side of the diagram you’ll also see the crop factor of the sensor as compared to a full frame 35mm sensor. This is useful for calculating equivalent field of views for lenses on different sensor formats. For example, a 23mm lens on a medium format camera with a crop sensor (crop factor 0.79), would actually …

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Hasselblad X System Crop Factor and XCD Lens Full Frame Equivalent Focal Lengths

Medium-format mirrorless systems are a great way to get into photography with a sensor that’s larger than a full-frame 35mm sensor, so long as you can afford the higher price point. Whilst cameras like those of the Hasselblad X System, and the Fujifilm GFX Format are pricey, they are still less expensive than traditional “full-frame medium format” cameras which use even larger sensors. When moving from a full-frame (or perhaps APS-C) DSLR, one of the confusing things to understand can be the focal lengths of lenses for a medium format system. We are so used to seeing focal lengths in …

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How to Calculate a Camera’s Crop Factor

The term crop factor refers to the ratio of a specific sensor to a 35mm full frame sensor. This factor determines the equivalent field of view of a lens when used on a camera with a sensor that is either smaller or larger than our reference full frame sensor. Many people are familiar with the two common APS-C crop factors: 1.6x for Canon, and 1.5x for Nikon, Sony and everyone else. But how do we get to this number, and how do you calculate the crop factor for other sensor sizes? Crop Factor Calculation The important thing to know is that …

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