El Diabolico
Second Officer
Germany
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AntDX316 Posted at 2-4 03:40
https://drive.google.com/open?id ... axO7wklf1cPABRB6qGk
Take a look at those. Download them and upload them to Lightroom to see the metadata to compare. f/16 shows everything sharp all around including distance. f/11, if you look out through the windshield it's not sharp. I couldn't tell this because I didn't bring the computer to examine. I just bought the lens 30 minutes ago from this time.
What was your focus point in the warehouse? That would drastically influence the rest of the image.
That's why Hyperfocal Focus point and DoF are closely linked.
If you focus too close to you, no matter the aperture, the background will never get super sharp. If you focus too far way (infinity), the foreground would never be super sharp. This is why you need to understand where to place your focus point (m or inches). A rule of thumb is that if you focus 2/3 into your image with a small aperture, everything should be quite sharp, especially with a super wide angle lens like your Sigma.
In your case and based on the Hyperfocal table, if you focus at 5m away at f/1.4, everything from 2.5m (half your focusing distance) to infinity should be in focus (photo 2).
If you focus at 1000m away (that is considered infinity), at f/1.4, everything from approx. 5m until infinity will be acceptably sharp and that is why in the photos you took, your porch and the trees close to it are soft (less than 5m) and everything beyond that (grass, trees, stars = more than 5m) is sharp (photo 1).
We use 'acceptably' sharp because it is extremely difficult to capture all that in one single shot being uniformly sharp, there's always a trade-off. Wider lenses like your 14mm tend to be much more forgiving. For longer focals you need to pay more attention as bokeh (DoF) is more prominent.
I've found the link to PhotoPills for PC (free), you can experiment more to understand what I am saying and then practice
https://www.photopills.com/calculators/hyperfocal-table
Closing, your lens shouldn't be sharper at f/16. try focusing at the distances I am telling you and check the differences edge to edge, not only center sharpness!I am posting below a photo I took in Iceland with my Samyang 12mm at f/11. Focused to the middle of the boat and you can see that also the mountains on the back are in focus.
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