| Joined: | Fri Jul 25th, 2025 |
| Location: | Stroud Glos., United Kingdom |
| Posts: | 16 |
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Believe me I turn a blind eye often on my own stuff these days, but in trying to answer an image quality question I revert to type. Lol
Ok so not through glass but the overall image is slightly soft. That doesn’t mean to say it’s not retrievable with post processing software …just not optimum when captured.
It doesn’t look like movement blur (to me) so your shutter speed would have been faster than say 1/250th at focal length of 200mm? ( inverse rule). Had just the squirrel been soft compared to the rest of the scene I would have said use 1/500th or more.
As I mentioned the f16 aperture MAY have introduced some softness. Checking a range of apertures under different lighting with the camera on a tripod (or at least not handheld) may well establish your lenses sweet spot range for future reference…hopefully not showing any flaws.
ASA = ISO and GRAIN = NOISE to all practicalities….although they are differently spawned beasts.
Yes, lower ASA/ISO ..should mean sharper images BUT not if the light level means widest apertures and/or too slow a shutter speed have to be used to achieve the right exposure. The wrong choice of settings could easily take the edge off the low ISO quality gain.
Also noise generated under incandescent lighting is more noticeable than under daylight. (Imho)
Establishing how low and high you want to go with your cameras ISO performance in combination with the lens fstop sweet spot range, will establish your equipments acceptable quality envelope.
One of the advantages of digital ISO over film ASA is you don’t have to change film. In fact many people set the ISO to Auto (with your own personal upper limit) and let that “float” to fit your chosen aperture and shutter speed settings.
Hope that makes sense?
Absolutely. The other problem I have is dealing with the eyesight ( Now he tells me I hear you saying) I have the dioptre adjuster cranked fully clockwise to get the focus frame in focus, ie fully black, but it isn't quite enough for my liking. I am going to address this right away. Meanwhile, many thanks for your very constructive comments .
Last edited on Fri Aug 1st, 2025 16:46 by