So my New Year resolution is to stick with one camera and one lens for the year. I chose the fantastic 35mm f1.4 and of course my X-e1. Now this is a wonderful combination and although I am still practicing street I am loving the results. However recently I have been reading about “zone focus”. I have come across thus before and tried it out a while back using my X100. I wanted to give it another try but here I now have a problem. In order to zone focus you need to narrow the apertures to get longer depth of focus field, ok I understand that but what I clearly have not understood is the ability to achieve a long depth of field you also need wider angles.
My X100 has a 23mm lens therefore an effective 35mm in full frame speak. Now I don’t know yet if the crop factor plays a part in the optical wizardry yet but my x-e1 has the 35mm therefore making it roughly 50mm. Now when I set both of them to focus on something 6ft away from me an at f/11 they show vastly different values in the focus distance bar in the optical view finder. So when trying to shoot street with the 35mm in “zone focus” mode AKA no focus time for extra speedy shooting its much more difficult to judge what will be in focus and out with the 35mm than it is with 23mm. What I would like is focus depth to be 6ft to infinity, but this is not possible. I clearly need to learn some optics know how here and work out what can be done.
So here are the numbers.
On my X100 23mm at f16 and focus on something 6ft away I get a range of 6-15ft.
On my x-e1 35mm at f16 and focus on something 6ft away I get a range of 6-10ft
On my x-e1 18-55 set at 18mm and at f16 and focus on something 6ft away I get a range of 4-13ft. If I select f22 it changes to 4-28ft.
So in need to understand just what is going on optically and what I can hope to achieve in the future, begging the question just what would be the best lens for street. This is what I love about this craft and why it takes years to master. Photography ha simples……. Not.
Off to find out more …… If you know please post some links. Thanks.