Sharpness distance
May 24, 2020 18:57:33 #
John Sh wrote:
Unfortunately your question has only one answer, it depends! on so many things. There is no simple answer, or formula, that can resolve this issue.
It easy enough to find out. Do a test.
May 25, 2020 06:21:08 #
CHG_CANON wrote:
You might scroll through this Flickr pool for the EF 85L II for examples of distance, focus and EXIF data, if posted.
https://www.flickr.com/groups/canon85mmf12/pool/
https://www.flickr.com/groups/canon85mmf12/pool/
Interesting site. Thank you.
May 25, 2020 06:42:46 #
saxman71 wrote:
Are you unhappy for some reason with the photo he posted about half way down page 1?
I'm on a phone and I hadn't seen the posted image when I posted my comment. Is that a good enough answer for you?
May 25, 2020 06:46:07 #
John Sh
Loc: Toronto, Australia
Gene51 wrote:
I'm on a phone and I hadn't seen the posted image when I posted my comment. Is that a good enough answer for you?
Steady on!!!
May 25, 2020 06:49:21 #
John Sh wrote:
Looks like the focus point is in the word 'Female" on her shirt. You need to focus on the eyes then recompose. Also a smaller apertures setting would help. No Exif with the shot so I can't be more helpful than this.
I would think the framing in the example used would not require even a focus a recompose. You should easily be able to move a focus point onto the eye.
May 25, 2020 06:57:54 #
There are some apps where it shows the hyper focal distance. Sometimes a little bit faster shutter speed- higher ISO helps to reduce slightly camera shake.
May 25, 2020 07:13:20 #
May 25, 2020 07:24:54 #
If you have not made a micro adjustment with your lens ... that's always worth doing as well.
May 25, 2020 07:38:46 #
I own the 85 1.2 and have never achieved focus any sharper than what I see here at 1.2. I assume the focus is right on the eyes. The lens just won’t get sharper unless you stop down to 1.8 or 2.0.
May 25, 2020 07:48:14 #
Thanks. All helpful. I calibrated the lens also but it wasn’t on a tripod. It’s pretty good. I just wasn’t sure how much better might be possible. I’ll try the tripod next. I just usually switch angles too often for a tripod.
May 25, 2020 07:52:40 #
billnikon
Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
Frostbyte wrote:
For a good sharp photo, how far away can you go to still expect fine detail in the face/eyes?
Maybe I’m expecting too much but I would think eyes should be able to still look sharp from quite the distance.
I’m using a 5dm4 85mm1.2f lens.
Maybe I’m expecting too much but I would think eyes should be able to still look sharp from quite the distance.
I’m using a 5dm4 85mm1.2f lens.
If the eyes are important to you. Feature them. You have an 85 mm lens. The face should fill about 60 % of the frame. FOCUS ON THE EYES. Forget the rest of the face. Keep the subject a good distance from the back ground and shoot at about f2 to F4. Use open shade to cast an overall soft shadow on the face. Make sure the background is no brighter than the light falling on the face.
May 25, 2020 08:08:34 #
When one says “smaller” aperture setting, does it mean a LOWER f-stop number? Or higher number to make the aperture smaller? Thanks.
May 25, 2020 08:29:09 #
Canisdirus wrote:
If you have not made a micro adjustment with your lens ... that's always worth doing as well.
- this is why the newer Sony's have Eye AF ....It does appear you were at a very wide aperture maybe 1.2?? I love the back round rendering.
You may need a higher MP camera or sharper lens to render the eyes better from such a distance.
.
May 25, 2020 08:31:00 #
Part of the answer has to do with the image resolution. And human perception plays a part in how a viewer sees a given photograph and its content. Some general principles and concepts apply. But you may wish to experiment.
Frostbyte wrote:
For a good sharp photo, how far away can you go to still expect fine detail in the face/eyes?
Maybe I’m expecting too much but I would think eyes should be able to still look sharp from quite the distance.
I’m using a 5dm4 85mm1.2f lens.
Maybe I’m expecting too much but I would think eyes should be able to still look sharp from quite the distance.
I’m using a 5dm4 85mm1.2f lens.
May 25, 2020 08:41:26 #
bhad wrote:
When one says “smaller” aperture setting, does it mean a LOWER f-stop number? Or higher number to make the aperture smaller? Thanks.
I've seen tests where f4 was considered the 'sweet spot' for sharpness for that lens and wide open not quite as sharp especially away from the center. Still looks like a fine lens though. I don't have it, but happy to test it for you...
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