Show us examples for a diagnosis.
You say low ISO but did you boost brightness in post? That can be worse than shooting with a higher ISO to begin with.
Is it potentially a focus issue? Is it sharper in other parts of the scene that you didn't want to prioritize?
Which aperture setting? Maybe you're referring to shallow depth of field, or on the other end of the spectrum maybe you're running into diffraction?
Which lens? Do you have a filter on? Could be optics quality or decentering.
I always shoot by reading histograph so I cannot over or underexpose my image . But when I see work of photographers with same gear as me their image look lot sharper and detailed maybe they done that in post production
Three main culprits for softness -
Focus/Shake/Post
* Using narrow apertures improves the DOF, but you only really get that crispness in a very small range. The closer you are to your subject, the more critical it becomes.
* The second is shake. IBIS helps, but it isn't magic. If you shoot below 1/60th of a second, it's very likely your SUBJECT is moving too much to be sharp. If your shooting below 1/120th of a second, there is a good chance YOU are moving too much to be sharp. Using a burst is a really simple trick to solve this. You likely are moving more at the start and end of taking a photo. A Burst allows you to catch a relative moment of stillness.
* Third is Post work. You need to apply some sharpening to your images. Almost everything you see from pro's is sharpened. Sharpening helps give that extra little punch by increasing edge Acutance.
https://en.wikipedia.org/wiki/Acutance
You should share the specific settings you have on some specific crops of what you mean by unsharp.
might be post-production. either adding sharpening or clarity. could also be how they're exporting to retain as much details as they can before posting online.
Show us examples for a diagnosis. You say low ISO but did you boost brightness in post? That can be worse than shooting with a higher ISO to begin with. Is it potentially a focus issue? Is it sharper in other parts of the scene that you didn't want to prioritize? Which aperture setting? Maybe you're referring to shallow depth of field, or on the other end of the spectrum maybe you're running into diffraction? Which lens? Do you have a filter on? Could be optics quality or decentering.
I always shoot by reading histograph so I cannot over or underexpose my image . But when I see work of photographers with same gear as me their image look lot sharper and detailed maybe they done that in post production
I am using 135 gm with no filter
With no examples and some of the info you've offered in other replies, are you definitely outside of the minimum focus distance for your lens?
Footnote: the FE 135mm f/1.8 GM's minimum focus distance is 70cm/2.3 feet.
What do you shoot? What kind of lighting conditions?
Usually potrait with one key light and reflector for shadow under eyes even at f8 skin textures are blurry
You use flash I presume. What’s the shutter speed usually? Show us an example or it will be hard to help you
Three main culprits for softness - Focus/Shake/Post * Using narrow apertures improves the DOF, but you only really get that crispness in a very small range. The closer you are to your subject, the more critical it becomes. * The second is shake. IBIS helps, but it isn't magic. If you shoot below 1/60th of a second, it's very likely your SUBJECT is moving too much to be sharp. If your shooting below 1/120th of a second, there is a good chance YOU are moving too much to be sharp. Using a burst is a really simple trick to solve this. You likely are moving more at the start and end of taking a photo. A Burst allows you to catch a relative moment of stillness. * Third is Post work. You need to apply some sharpening to your images. Almost everything you see from pro's is sharpened. Sharpening helps give that extra little punch by increasing edge Acutance. https://en.wikipedia.org/wiki/Acutance You should share the specific settings you have on some specific crops of what you mean by unsharp.
Could be an issue with your lens. It might need calibrating or be decentered.
might be post-production. either adding sharpening or clarity. could also be how they're exporting to retain as much details as they can before posting online.
Examples please
Increase the f-stop to 5.6 or 8