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By prabhuv  

Tags: Close-up and macro Prabhuclicks 2019 2019: Close up

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19 Oct 2019 11:59AM
I really like your minimalist composition, and also the colour combination.

Your decision to shoot with the lens wide open at f/1.8 has ensured that the background is blurred. Unfortunately, because your point of focus was on the nearest petal, that very wide aperture has resulted in the rest of the flower head being out of focus. You might have been more successful if you had used f/5.6, or even f/8, which would have ensured that the flower stem was also in focus... I personally think that would have made for an even more attractive image.

In addition, you have over-exposed by a full stop, and the highlights on the petals are slightly burned out as a result.
dudler Plus
18 1.7k 1884 England
19 Oct 2019 12:09PM
I like the idea, and the composition is good, I reckon.

But there doesn't seem to be anything truly sharp in the image. As I wrote of yoru last Critique Gallery post:

What you do need to do, though, if you want to open the lens wide, is to get the focus absolutely perfect. In this hsot, it's a millimetre or two off, and that spoils it, for me. Camera and subject must be still, and focus must be on the seed pod, absolutely precisely. Tripod, livve view, and take loads of shots.

A daisy on a long stem is almost certain to be in motion all the time, and f/1.8 is as optimistic as a politician seeking election.
banehawi Plus
17 2.6k 4274 Canada
19 Oct 2019 2:28PM
There are many articles on EPZ and Youtube on this,

I am providing two links; one is to an EPZ article, the second is on a good tool that allows tou to determine your depth of field of any shot, and explains exactly what depth of field actually means.


Depth of field:

According to the calculator, using you settings and assuming your 4 feet from the plant, your depth, - the zone that will be sharp, is from 3.93 feet to 4.07 feet, and depth of only 0.13 feet, assuming perfect focus, AND, very importantly, the plant is totally static, - no movement at all.


mrswoolybill Plus
15 3.0k 2465 United Kingdom
19 Oct 2019 3:17PM
I have that lens, I love it dearly, but I don't use it wider than F2.8 and I prefer F3.5 to F5.6. It really does not give its best at full aperture!

I seem to be typing this rather often - but just because a lens offers F1.8 that doesn't mean that it's compulsory or even advisable to use it! Having a fast lens is potentially useful when coping with very poor light (not a problem here), mainly it means that decent image quality begins at a larger aperture than would be the case with a slower lens. No lens functions at its best at its extremes.

Something else to remember - your subject here is not parallel to the lens, the flower slopes away from us. And as your depth of field at F1.8 is minimal, a large chunk of the flower is going to be soft. Plus because your depth of field in front of where you focus is only half of what you get behind where you focus, those lower petals that are nearest to us are particularly soft.

The tiniest movement, just a millimeter or so, will knock your focus. So, for example, you cannot lock focus and then compose, just that movement of the camera will lose the focus.

Keep experimenting - but think carefully about the settings that you use.
chase Plus
16 2.3k 589 England
19 Oct 2019 3:24PM
I quite like your colourful OOF bg but just a little too much of it for me, the Daisy seems lost in the frame.
As has been pointed out, nothing is really sharp here, at F1.8 your focus MUST be spot on, I reckon F5.6 would have given you better focus somewhere on the flower head and as you are using Aperture Priority, yes, your shutter speed would decrease but I think you would have enough 'room to move' and still have the flower in focus and there would be a better chance of holding on to the whites.

Manual exposure mode would have been the way to go, metering from the white petals, much better to under expose than over, you can bring back some of the darker bits but once the whites have blown as much as this they are truly gone, never to be seen again.

prabhuv 10 4 India
20 Oct 2019 7:27AM
Thanks for your suggestions.

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