playing with fstop
Just playing with f-stop.
Higher f-stops produce a greater depth of field (a greater total area of sharpness)
The focus point of the two "identical" lavender photos is the lavender at the very top of the photo about 1/3 of the way from the left edge.
The first shot is f22 and the entirety of lavender blooms is more or less in focus--but the intensity of the purple color is less than in the second photo.
The second shot is f3.7 and the focus point is a more intense purple but you'll note that the photograph becomes progressively blurred as one moves from the focus point down to the bottom and that it's more noticeable in the flowers than in the matte foliage.
The first rose is at f3.7. Again you'll note that the rose in this photo is a tad sharper and a tad more saturated than the second photo.
The second photo is f22 and you'll note that all the leaves are much sharper than the the f3.7 photo (but the rose is a tad off.
If one wishes to take a photo of a single rose or a small, closely confined group of roses, then a lower f-stop is preferable.
If one wishes to take a photo of an entire rose bush laden with blooms then a higher f-stop is preferable.
As an aside, all the exposure values were arbitrarily brought back to zero for purposes of comparison. The f22 photos, suffering from lack of saturation, could probably be easily fixed (given sufficient ambient light) with a simple EV manipulation... but that's another subject.