No general deskew?
I'm running the free demo of Capture One (10.2.0.74) and reported a bug in which the horz+vert keystone correction would not adjust beyond a certain amount (even with the weird +120% slider), and was told this was not within the capabilities of the tool.
Lots of other tools can do this (including my *phone*!), so does anyone have any hints about a method or plugin that will do a proper deskew operation? Kind of a deal-breaker for me.
Lots of other tools can do this (including my *phone*!), so does anyone have any hints about a method or plugin that will do a proper deskew operation? Kind of a deal-breaker for me.
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what image are you trying to correct that needs that much! 0 -
[quote="NNN636403476753378678" wrote:
I'm running the free demo of Capture One (10.2.0.74) and reported a bug in which the horz+vert keystone correction would not adjust beyond a certain amount (even with the weird +120% slider), and was told this was not within the capabilities of the tool.
Lots of other tools can do this (including my *phone*!), so does anyone have any hints about a method or plugin that will do a proper deskew operation? Kind of a deal-breaker for me.
I think if that is a "deal breaker" one could say you have found the trial useful.
If nothing else in the software appeals to you - remembering that Capture One is focused initially on interpreting RAW data to create a quality image rather than manipulating pixels as an artist/graphics application tends to offer - then Capture One might not be the tool you are looking for.
What do you use now and what is leading you to consider a change?0 -
[quote="SFA" wrote:
I think if that is a "deal breaker" one could say you have found the trial useful.
Indeed; I just had great hopes and was not expecting a trivial tool to not work.[quote="SFA" wrote:
If nothing else in the software appeals to you - remembering that Capture One is focused initially on interpreting RAW data to create a quality image rather than manipulating pixels as an artist/graphics application tends to offer - then Capture One might not be the tool you are looking for.
What do you use now and what is leading you to consider a change?
Indeed; Lightroom is my current horror or choice, and I would do almost anything to get out of the clutches of Adobe.
The Keystone correction tool in Capture one has a great UI, it's such a pity it does not work.0 -
[quote="NNN636403476753378678" wrote:
The Keystone correction tool in Capture one has a great UI, it's such a pity it does not work.
I would be interested to see an example of the sort of image you are processing where the Keystone correction is inadequate.
I don't specifically shoot architecture or anything where keystone correction is a commonly used tool but I do use it from time to time with a variety of non-specialist lenses and it seems to produce good results even in my unskilled hands.
That said the Keystone tool does not have a slider adjustment of the type you mention.
The Lens Adjustment tool does - for distortion adjustment based on different starting points depending on the lens used.
Are we discussing different things here?0 -
[quote="SFA" wrote:
I would be interested to see an example of the sort of image you are processing where the Keystone correction is inadequate.
Go to a gallery (or just a room with a poster) and take a picture at say, 45 degrees to the wall. Try to correct it. As previously said, Lightroom, GIMP and my phone can do this.
Why do I have such images? I just got back from a trip to Russia where they have amazing art works curated *really* badly: strong lights, including sunlight, light reflected from floors, ceiling, floors walls and other (glass covered) art works. Sometimes one has to hunt for a sweet spot then rely on high MP and adjustments.[quote="SFA" wrote:
I don't specifically shoot architecture or anything where keystone correction is a commonly used tool but I do use it from time to time with a variety of non-specialist lenses and it seems to produce good results even in my unskilled hands.
Ditto. But, it *seems* to be the only means of deskewing an image.[quote="SFA" wrote:
That said the Keystone tool does not have a slider adjustment of the type you mention.
Check it out; it does. The basic adjustment goes to '75' and there's another slider that allows up to '+120%'; no idea what the latter actually does; other than badly accentuate the former.[quote="SFA" wrote:
The Lens Adjustment tool does - for distortion adjustment based on different starting points depending on the lens used.
I'll look at that before the demo runs out, but it sounds less likely to work.[quote="SFA" wrote:
Are we discussing different things here?
I don't think so. I'm using keystone correction for deskew; it seems to be the only tool available and has an excellent UI for it.0 -
OK, my apologies, you are looking at the full tool and I was looking only the controls available with a right click. I realised that just before I saw your follow-up post.
The 120% slider is, it seems, a fine adjustment "device" that can be used once the main adjustment is set.
I seem to recall a blog post a few years back (might have been a comment in a Webinar) that mentioned the idea that a 100% correction, for architectural purposes, could look somewhat unnatural and presumably the option to set the "fully corrected" vertical and horizontals and then adjust to taste without the risk of upsetting the main corrections. Similar fo aspect ratios I guess, although avoiding stretching or compression might be tricky.
As the process attempts an auto-crop which will self constrain to be within the image area extreme perspective changes may be somewhat compromised.
For major adjustments it may be worth setting the crop to to allow cropping outside the image (There's a tick box in the crop tool) and then adjust the vertical and horizontal keystones separately tweaking the crop size and position at the same time to make the virtual image area as large as possible. After adjustment the crop can be re-established to be only what you require (usually).
This approach seems to offer greater and finer tuned adjustments in some situations. Using rotation for general correction might be beneficial too in preference to correcting rotation using only keystone adjustments.
Grant0 -
Hi,
adding to Grant's post the percentage of applied correction reffers to the previously applied on screen / visually introduced corrections. It's about pushing/pulling the guide lines to "lines" in the image which are supposed to appear horizontally and vertically. And as a first step before actually starting any keystone correction I'm trying to improve rotation.
At this moment I've not experienced the mentioned limitations for keystone correction.0 -
[quote="Michael11" wrote:
Hi,
At this moment I've not experienced the mentioned limitations for keystone correction.
As I suggested above, take a picture of a poster on a wall at, say, 45 degrees, and see if you can straighten it.0
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