One of the first pictures I ever made with a DSLR, how to get all sharp?

Started Apr 24, 2014 | Discussions thread
OP Cingen Regular Member • Posts: 168
Re: Ohne of the first pictures I ever made with a DSLR, how to get all sharp?

BobSC wrote:

Cingen wrote:

I do not have a filter attached, and I am using the 18-140 kit lens. Sort of hard to know if it's a technical issue or just me being new to this that causes the unsharpness...

It's hard to figure out. But here's what you can do:

Set your camera on a tripod. Take a series of photos at each aperture. 5.6, 8, 11, 16.

Take them and look at them. Figure which is sharpest.

Now go back out and use only that aperture. Set the camera to manual focus. Perhaps 1 foot off the ground. Focus on something about 8 feet out. Now when you look at the photo there will be something that is in focus. That's the best your lens can do. You'll see the grass out of focus, in focus and back out. Like so:

Is this technique used to test a lens his "sweet spot", or to actually spot technical issues that may be wrong? I don't mind the lens not being the best of the best, I'd be crazy expecting a kit lens to be. My main worry is an actual technical problem with either my camera or lens..

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