Timeline for Images Unsharp Or My Criteria Needs To Be Adjusted
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 21, 2020 at 3:10 | comment | added | Michael C | @DrazenC In most cases at non-macro distances, double the distance of the closest desired objects to be rendered acceptably sharp (not perfectly sharp) is the hyperfocal distance. But keep in mind that since DoF changes as enlargement changes, so does the hyperfocal distance. The correct hyperfocal distance when assuming an 8x10 or 8x12 inch display size is not the correct hyperfocal distance for a 24x36 inch print! Most DoF calculators assume standard viewing conditions: 8x10 viewed from 10 inches by a person with 20/20 vision. A 24MP image at 100% on a 24" monitor is more like 60x40! | |
| Jan 20, 2020 at 19:24 | comment | added | scottbb♦ | @rackandboneman +1 for use of "skeuomorphs". I so rarely get to use that word. | |
| Jan 20, 2020 at 15:28 | comment | added | rackandboneman | Might be me messing around with adapted lenses too much... I think distance scales on anything but rangefinder lenses are pretty much ornamental skeuemorphs :) | |
| Jan 20, 2020 at 14:29 | comment | added | xiota | Diffraction sets in at different points on different lenses. Try f/5.6. Focus on something midframe. With 18mm, you should be able to easily capture infinity. | |
| Jan 20, 2020 at 14:22 | comment | added | DrazenC | My lenses don't have scales, the only think of can do is to estimate lengths myself, with some distances it is not a trouble. Currently I noticed advise that it's better to focus double the distance of the closest desired sharp objects than to hyperfocal. | |
| Jan 20, 2020 at 11:50 | comment | added | rackandboneman | Also, hyperfocal distance tables assume that focusing scales on lenses are accurate. Often with SLR lenses, they ARE NOT. | |
| Jan 20, 2020 at 11:47 | comment | added | DrazenC | Could it be diffraction at f/14 already? In the meantime I learned that f/8 or f/11 is better for such short focal length as DOF is large anyhow. My problem seems to appear in photos where I'm trying to create as large DOF as possible, landscapes, cityscapes. When I focus at a single distinct subject the results are much better. | |
| Jan 20, 2020 at 11:13 | history | answered | rackandboneman | CC BY-SA 4.0 |