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rambler > rambler Blog > DAY 31 EXPERIMENTATION
31/01/2013 - 9:49 PM

Unique views 403 (989)

Something a bit different this time with a test of the new Canon F 1.8 50 mm prime lens. To gauge its Depth Of Field or focus range I took the following shots at F 1.8, F 2.8, and F 5.6 respectively. It may not be a really scientific test but it does clearly illustrate the difference at each setting. I hope this is of interest to you.

img-7863-edited-1.jpg f 1.8 at 1/1250th of a second exposure

img-7864-edited-1.jpg f 2.8 at 1/ 500th

img-7865-edited-1.jpg f 5.6 at 1/100th

It is interesting to note how the focus has improved more in the foreground range. Further f stop adjustment up to f 22 would improve the background or distant range too with little improvement in the foreground. To illustrate my point:-

img-7869-edited-1.jpg f 22 at 1/6th

Note how the change from a large aperture at f 1.8 to the smallest aperture at f 22 has affected the shutter speed to obtain the same exposure under the same lighting conditions.


Gary66  3158 forum posts England
1 Feb 2013 - 11:03 AM

Nicely done, Pics always help us learners. Smile

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