Today, I shot some flowers, in anticipation of a photo club walkaround on Monday.
I’ll share a few here, to get you started.
If you have a macro lens, use it. If not, then consider a 50mm lens and get as close as you can: then crop in post-production. That’s why you have all those pixels. (If you use a “normal” lens, set it to a smaller f-number to get shallow depth of field).
And look for nice colour contrasts: purple and green is a great combination.
Here’s a shot taken in simple non-direct light (direct sunlight is not great), with a macro lens set to f/5.6. Normally, f/5,6 at close range gives you too narrow a depth of field, but in this case it works:
Red (or orange) and green is a great combination, also:
As said, if you can, avoid flash, and direct sunlight. Except translucent light, i.e. a flower lit by the sun from behind, can work very well:
Simple backgrounds are essential. Dark backgrounds are nice too, if you can get them.
Can you see that the iris shot below does not have a simple enough background, and that the light is a bit harsh? If I had been able to, I might have used a black sheet of paper behind the flower.
Importantly: get your exposure right. Foliage is dark: your camera will try to over-expose it. You may well need to use exposure compensation, of perhaps -0.5 to -2 stops, to get the right exposure. I am sure I used that in most shots here.
(“I am sure” because I am not sure: it is so automatic that I am not even consciously aware!)
This, I hope, is a start: go try some flower pictures!