How Much Exposure Error Can Be Made With The Fuji X-T2 And The Olympus E-M1 Mark II And Still Have A Usable Image?

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How Much Exposure Error Can Be Made With The Fuji X-T2 And The Olympus E-M1 Mark II And Still Have A Usable Image?

Unread postby bakubo » Fri Apr 21, 2017 2:19 am

This photographer uses the Fuji X-T2 and Olympus E-M1 II. I stumbled across his blog recently. From what I have read in some of his articles he prefers the user experience with separate, traditional mechanical control knobs of the Fuji, but uses the Olympus for situations where it's performance and characteristics are needed. Anyway, he did a 3 part article about exposure latitude comparing the 2 cameras here:

How Much Exposure Error Can Be Made With The Fuji X-T2 And The Olympus E-M1 Mark II And Still Have A Usable Image? Part I of III

http://www.thewanderinglensman.com/2017/02/how-much-exposure-error-can-be-made.html

How Much Exposure Error Can Be Made With The Fuji X-T2 And The Olympus E-M1 Mark II And Still Have A Usable Image? Part II of III

http://www.thewanderinglensman.com/2017/03/how-much-exposure-error-can-be-made_1.html

How Much Exposure Error Can Be Made With The Fuji X-T2 And The Olympus E-M1 Mark II And Still Have A Usable Image? Part III of III; Wrapup And Summary

http://www.thewanderinglensman.com/2017/03/how-much-exposure-error-can-be-made.html

I was a bit surprised to find that the Olympus M4/3 camera's sensor out performed the Fuji's APS-C sized sensor when it comes to exposure latitude. This is not a comment on the subjective, such as the "look" of any particular image, color, sharpness, detail or otherwise, just that the E-M1 Mark II has greater latitude in bringing images back from the precipice than does the Fuji.

Fuji's 24mp sensor is larger and the size of the individual pixels is 3.9 microns while Olympus' 20mp M4/3 sensor has pixels which measure 3.3 microns. Fuji's sensor is 368 mm² while Olympus produces sensors which are 243 mm². That is a difference of 66% in Fui's favor. Additionally, Fuji has an advantage of 18.1% in pixel size. Fuji's advantages should result in better light gathering abilities, noise and overall image quality. But maybe an 18% difference in pixel size and a 66% difference in sensor sizes are statistically insignificant. I just don't know. In all respects it seems the Fuji should perform better. You would think?

I found the Fuji X-Trans III Pro sensor has a (subjective to my judgment) latitude of 2 1/3 stops overexposure and 4 1/3 stops underexposure. That isn't shabby by any measure.

I found the Olympus TruPic VIII sensor has (again in my subjective judgment) a latitude of 3 1/3 stops overexpsoure and 4 2/3 stops underexposure. That is simply amazing to me.

I found that I could pull out the same quality of image on the Olympus even with a 1 1/3 stops more overall exposure error than the Fuji.

This leads me to conclude the new Olympus sensor and processor has a significantly higher dynamic range—1.33 stops more—than the Fuji X-Trans III sensor. Again, I"m a bit surprised by this. Also, don't forget, image quality is a very subjective thing and even though the Olympus pulls more out of any particular file when the exposure is way off, I still like the Fuji colors and "look" better at this point.

The dynamic range of these two sensors is really close to the sensors on my previously owned Nikon D800E and D810. The two Nikons will still outperform these, but not by much.

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