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Old Jun 22, 2005, 11:34 PM   #1
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I got a 50mm 1.8 lens today and was taking a few shots and Im having trouble with my pictures being too soft like the one below, does anyone have tips on how to get better sharpness?

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Old Jun 22, 2005, 11:45 PM   #2
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1) 50mm on rebelXT at F2.5 has a 0.73ft depth of field.
http://www.dofmaster.com/dofjs.html
You need to use a smaller aperture to get more in sharp focus.

2) DSLR output usually needs some post processing.
Here I applied a bit of Unsharp mask and levels to your image.
Change is hard to see it is difficult to apply post processing to a small jpg.
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Old Jun 22, 2005, 11:47 PM   #3
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Did you shoot this hand-held? If you did, it's pretty good for 1/25s.

Bob
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Old Jun 22, 2005, 11:49 PM   #4
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yea I just shot it handheld
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Old Jun 23, 2005, 12:59 AM   #5
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what do you think of the sharpness on these? no pp, all shot with a tripod


ISO 100
.4 Tv
2.2 Av

ISO 400
.3 Tv
5.6 Av

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Old Jun 23, 2005, 1:11 AM   #6
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heres a crop of the bolt

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Old Jun 23, 2005, 1:16 AM   #7
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Look good to me. Great results from the thrifty fifty.

Bob
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Old Jun 23, 2005, 10:53 AM   #8
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I don't think you should have any problems with that sharpness.
Being able to see the threads on the bolt and some lint on its side seems like it is resolving details very well.

Unless you change the settings, DSLRs will always produce images that require some sharpening. This is intentional as you (not the camera) know how much sharpness is desired. You don't normally want to show every pore on a model's skin. But you often want to show every feather on a bird of every whisker on a cat. If the camera always did a lot of sharpening, then the cat would look good and the model wouldn't.

You can adjust in camera sharpening if you want, and accept some oversharpening some times. Or you can accept that you'll have to add some sharpening by hand during post processing. Since sharpness is difficult to remove, most choose to add it.

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