Lens Correction? Search by Focal Length?

Does Photos for Mac support lens correction of RAW files? Can you search or sort photos by focal length?

Can you search or sort photos by focal length?
In a manner of speaking. You can create a smart album with the following criteria:
Right now there's no capability for editing with a 3rd party editor from within Photos. Ask Apple to add that feature via http://www.apple.com/feedback/iphoto.html and http://www.apple.com/feedback/macosx.html since they don't have a feedback page for Photos as yet.

Similar Messages

2 question about GPU and Lens correction ,cs5

Hi
i have 2 questions about Gpu and lens correction in Cs5
1)Filter->lens correction->search online
i get often and almost every connection time out at the first click on search online , at the second click i get no online profile
is it normal?
2) question is about Gpu
it run faster , but talking about ajustament layer
like saturation or vibrance for example
i found with the gpu on , a light slow refresh compared with gpu off
i have set cache levels 6 ,history 20
i guess are the defaul
well i add a saturation layer and move the saturation slide ,increase o decrease saturation
with Gpu Off , the changes are immedially , i mean i can see in real time the increase o decrease of saturation
with Gpu On it takes a few(very few) time more
again is normal ?
don't be angry , i'm going to buy cs5 and i'm unsecure ... the price make a big role
thanks

For what it's worth, I also see a timeout on the first [ Search Online ] click, after about half a minute delay. Second click turns up results immediately. This happens each time Lens Correction is started, even without restarting Photoshop, and in both 32 and 64 bit versions. Also note that I started with one profile listed by default (though from the wrong camera) for my 40D with 28-135 zoom.
I alsow noticed that I was seeing progress bar activity in the Lens Correction dialog while I was typing this (even though Lens Correction was NOT the active window) every time I hit the 'L' key. Strange.
Windows 7 x64.
-Noel

LR Filters ADD custom filter for Focal Length

I use a Leica M8 and in it's metadate there is a field for focal length of the lens but not the lens name/type and in LR filters there is a filter for Lens but not for focal length.
Is there a way to add a custom entry in LR to filter images based on focal length?
Found a way with smart collections.
Thanks

Care to share how you did this?

Focal length correction

I am retaking photos that my father took of vacation locations he visited several states away some 80 years ago. I have found the exact location for many, but find on my return home that the images that I took at 16mm do not match the scene that he photographed, probably at about 28 mm, as that is probably the lowest focal length lens he had at the time. Can I use my CS4 software to correct the difference in the scenes caused by the different focal length shots?
Simple enlarging does not work, as this makes cropping necessary, thus making my retake of the scene smaller in scope, thus not matching the original total scene.
Thanks.

Hi, JJMack,
Thanks for the reply. Much appreciated.
He used a Leica camera, then a Nikon, neither of which are still around, unfortunately. I am guessing that his lens was 28 mm or so, but don't know that for sure. All I do know is that the distant images of the mountains seem closer than my "now" shots, so it was certainly a longer focal length than my 16mm.
To gather the scene he saw, and then some for safety, I felt it best to use the wider perspective (shorter focal), then crop to fit. But by doing so, I have much the same scene, but my image shows the mountains to be further away.
I'll keep working with it. I can still return to these locations and adjust the focal length next time. I was just hoping CS4 could have saved the effort.
Again, thanks.

Lens information and focal length (35mm) not showing up

I'm using a Canon 20D with several L lenses and I have yet to see any information show up in the Focal Length (35mm) field, or any of the lens information fields. I would think this would be a pretty common combination and I'm wondering if there is anything I can do to get this information.
For focal length, since it does know my camera type (i.e. 20D) can't they just multiply all the lens focal lengths by 1.6 my FOVCF?

the sensor size in the camera does not alter the focal length of the lens - it just results in an image with a different field of view to a different sensor size. Focal length is a characteristic of the lens and has nothing whatsoever to do with the camera body it is attached to.
The lens will always be a 28mm or 50mm etc so why would Aperture or any other software say it is a 45mm or 80mm lens? The image will not look the same as if you had taken it with an actual 45mm or 80mm lens, so it would be incorrect to show it as such...
Aperture should simply show the actual focal length for each image - we translate that to whatever is helpful for us to understand the results.

Filter by lens focal length?

I would like to get an idea of how frequently I use different focal length settings on a particular zoom lens. The focal length used on each shot is in the metadata. I can see it shown right under the histogram in Library mode. Is there some way to build a custom filter to select photos with a focal length between 24-32 mm, for example?

Jeffrey Friedl has written a LR plugin that should address your needs:
Taken from his page:
"This plugin is designed to fill a specific hole in Lightroom's “Grid
Filter”, adding new fields by which you can filter images: “Focal
Length” and “Focal Length in 35mm”. The
former is the raw focal length of the lens, while the latter is viewed in
terms of the frame size of a 35mm film frame."
http://regex.info/blog/lightroom-goodies/focal-length-sort

Will there be a lens focal length filter in LR3?

I find the aperture filter useful and recently needed to find focal lengths used for three of my lenses. Had to export thousands of jpegs for each lens to drop into a another program to get the information.
Grouping FL together would give a resonable filter ( 20-25, 26-30, 31-35,36-40 etc etc)

Just clicked Forum (german adobe-website) in the Lightroom section. Sorry if I chose the wrong board :/
The camera only can shoot RAW. I think even my Canons can't shoot DNG if I'm remembering right.

Lens Focal Length with Phase One P21+

Hi,
When importing images without converting them into DNG I have the following situation in LR
When using the Developer module I can se the focal length of the lens, but when in Library Its not visible anymore ?
/M

Hi,
Thank you for the fast answer, When looking at the screen I have ALL selected and it tells me unknown lens.
Please see the attached image
/Mikael

Smart Folders and Filtering based on Focal Length

Can we please be given the ability to create Smart Folders and be able to Filter images based on focal length?
Doing so based on Lens alone does not take into account that more and more people rely on zoom lenses. When you have 16-35, 27-70, 35-135 and 70-200 lenses, one could benefit from having the ability to search for images created in wide-angle, normal, zoom and tele-zoom ranges.
Providing this feature would be greatly appreciated.
Regards, JML

Thanks Colin, I will try it.
Sounds like it may work - however bit awkward solution in otherwise ergonomic LR environment :-(
I really do not understand why this value is not among the filtering metadata when LR recognizes it and shows it on every corner. Especially considering the fact LR is supposed to be full WF solution and certain development settings cannot be effectively applied without selecting images only with certain focal length values.
The very last feature I am missing on this SW designed to cover entire WF (since LR1) is the distortion/perspective control and ability to apply corrections based on lens/focal length used.
b Does anyone have an idea if Adobe plans to eventually implement this feature?
I do not want to be forced to use DxO which always means interruption of the WF and inevitably generated new files on disk.

Manual Lens Correction in Lightroom 4

The Manual Lens Correction sliders in Lightroom 4 seem completely useless. They aren't working the same as they do in Lightroom 3. Instead of being able to fix keystoning of images, now the horizontal and vertical sliders just stretch or distort photos. Is this a bug? If not, is it possible to go back to the functionality from LR3? If this isn't possible, I'm probably going to switch back to Lightroom 3, since this is one of the program's most useful features.

Lee Jay wrote:
... This functionality hasn't changed at all for me - it works exactly as before.
I think so, too.
See my example in the feedback forum demonstrating the different effect of the manual transformation sliders depending on the angle of view: http://feedback.photoshop.com/photoshop_family/topics/i_would_love_automation_in_the_lens_ correction_manual_panel : There is an automatic aspect ratio correction, and for photos taken with a rather small angle of view, this is mostly a stretch/distort. Which is totally correct IMHO (and hasn't changed since LR3).
P.S. I don't know which angle of view LR assumes for photos w/o information about focal length and sensor size (probably 50mm focal length and 35 mm film format ("full format") sensor.

Lens correction settings in LR3

Hi guys! I have downloaded LR3 yesterday and played with trial version for a few hours now. Looks like a very welcome upgrade over the 2.x version. However I cannot fully appreciate the way lens corrections module is supposed to work.
I am a nikon user with 28-75 Tamron lens. After setting "custom" lens correction profile and choosing Tamron as lens manufacturer, LR3 accurately suggests my lens model and assigns an existing adobe profile. So far so good. But there is one thing that keeps me from feeling all happy and excited about this new feature: Lightroom would not allow to save different default settings for various focal lengths. For instance, the named above 28-75/2.8 tamron lens has somewhat considerate barrel type distortion at 28mm, and at the same time at its maximum of 75mm geometry distortions are almost non-existent. So while I am happy with how LR3 handles the wide angle distortions, it makes things a lot worse with telephoto range when I apply default lens corrections.
Hence the question: can I somehow make settings in lens corretions module specific to the focal length used? Of course, I would like LR to do that for me, but since it cannot, is there any walkaround? Tweaking settings for each shot is time consuming, and I see no reason not to make this process a little bit more automated.

Adani2, I have encounter similar problems with the same lens on my Canon 1D Mark III (a 1.3x crop camera).
The quick answer to your question is no. There is no setting in Lightroom that allows for correction at a specific focal length, apparently the software is suppose to automatically determine that. I use to have a D80 with the Tamron 28-75 before I switched to Canon. So I decided to process a few shots with LR3 to see if your problem was the same as what I encountered on my 1D3.
I used LR3's lens correction on three pictures, each a different focal length (28, 40, and 75). At the extreme ends, I found 28 and 75 to not vary much from the same image corrected with PTLens (the current progam I use to correct lens distortions). However, at 40 I ran into the same cropping and over correction problem I did with my Canon 1D (albiet it is much worse on the 1D than the D80). It is discussed more in depth here: (http://forums.adobe.com/thread/656057?tstart=30). Below is a picture taken at 40mm (f2.8) with the Tamron 28-75 on my old Nikon D80 with the "corrected" image overlayed on top (opacity 50%):
Before auto aligning of layers in Photoshop:
After auto aligning of layers in Photoshop:
Interestingly, the difference between PTlens and the original image for the above shot is virtually zero which is consistant with reviews about this lens (http://www.photozone.de/nikon--nikkor-aps-c-lens-tests/291-tamron-af-28-75mm-f28-sp-xr-di- ld-aspherical-if-nikon-lab-test-report--review?start=1). Why LR3 believes there is distortion when there isn't any is rather perplexing.
My suggestion, for this lens on a crop body, would be to not bother making any lens corrections except for critical pictures (e.g. architecture) taken around 28mm. The distortions for this lens are, for all practical purposes, negligible on cropped camera bodies.

Lightroom - Lens Correction - Lens Manufactuer unknown

I have a Canon Rebel XTi and shoot in Raw. I have 3 Tamron lenses - a 10-24, 17-50 and 18-270.
I thought I'd try out the lens correction profile for my 10-24 for a few pics, but when invoking the option, it was unable to determine the len manufacturer. Though as soon as I selected 'Tamron' it then knew which lens I was using.
Should my metadata have capture the lens manufactuer?
Is there something I am missing?
Given they are all Tamron - can I set some sort of default so I don't have to select Tamron for every picture?
Thanks!

If you cannot get the right lens profile assigned using the Set Default method described in earlier posts (for example, if two different lenses that you use are identified exactly the same by LR's reading of the image metadata, so that it cannot distinguish them automatically) then it can be helpful to record the manual assignment of a given lens profile, into a Develop preset for easier application to images in the future.
To reiterate, it is enough that Lr's lens detection operates as a unique identifier, that can cause the particular correction profile to be used which you have stipulated; the actual lens description does not strictly need to be correct for the lens, in order for this to happen automatically, per image, at import or subsequently.
So a general Develop preset or default which turns on lens corrections just needs to activate the profile checkbox, and in the Profile: selector, show "Default". Then LR uses whatever it has been told is the right default for each Lens ID encountered, which may derive from its originally installed list, or else from what the user has later assigned.
A specific preset applying a particular lens profile for cases where auto detection doesn't work, will instead apply this explicitly, set as "Manual".
For example, I use some older, pre-digital Pentax lenses which have no ID chip, and report to LR as just "A series lens" or else "K or M lens" - because all the camera can do, is detect whether or not these older lenses have an auto aperture. So with those, I can use LR to filter them down by focal length (prime lenses), to help me rapidly apply a Develop preset which picks out the correct profile for each individual lens. The camera asks me for the focal length whenver it detects a legacy-mount lens has been fitted, so that it can correctly apply shake reduction, so that info is at least recorded against each image. But: most of the time, I use only one A series lens and only one M series lens, so I have LR set to "presume" the A/28 profile for the former, and the M/135 profile for the latter, unless told otherwise. I only have to intervene as described in the exceptional case, when I know I have used some other lens sharing the same class of legacy mount.
The same principles apply when third-party lens makers use ambiguous Lens IDs even for modern chipped lenses, where these codes may span across multiple, different lens models indiscriminately.
RP

Community lens correction works for me

A few days ago lens correction profiles showed up for my D300 with both 16-85VR and 55-200VR lenses. Brick wall testing indicates they seem to have nailed distortion/CA/vignetting, at least for focal length extremes.
So how do we know where these profiles originated, if for no other reason than to give credit?
Richard Southworth

I can think of one really good reason why a lens profile should be camera-specific for the best possible results:
Not every sensor responds the same to light coming in from various angles. Microlenses, for example, are different from sensor to sensor.
So the vignetting profile for one camera might be a general improvement on another, but it may not produce specifically accurate results on that other camera.
You cannot oversimplify the problem and achieve perfection.
-Noel

How to shoot fixed focal length lenses?

Hi,
I wonder how I am supposed to best shoot fixed focal length lenses.
Currently I just shoot one set of 9 images, just because it is a fixed focal length lens and if I want it to be good, I shoot the same set again with different apertures.
But the documentation says: "For prime lenses, shoot at (1 × minimum focus distance) and (5 × minimum focus distance) focus distance positions with a fixed f/11 aperture."
My problem here is to understand how I am supposed to shoot with different focus distances while using a fixed focal length lens?
As far as I have understood until now, I have to put the test chart fully on the picture so it fills something about 1/2 to 1/3 of the picture, leaving room everywhere. I also input the type of chart I used in the software.
If I do this, then moving the camera to say 5 times the first distance makes the second set of picture agaisnt the rules since obviously the test chart will show only much to small.
If I do it the other way around (first 5x then 1x min) then the second set will only show fractions of the chart.
As added difficulty I wonder how to handle macro lenses... the minimum focus distance there usually allows for a 1:1 magnification. That would either require a test chart total size (!) of less than 1/2 an inch (fun printing) or you would only get to see a fraction of a test-chart-square.
So how do I do it?

No, I am not confunsing these terms. I thought of it exactly as you described, but that seems not in sync with reality or guidance given - for the following reasons:
1. I do actually own a 35mm macro lens with minimal focus distance which I want to create a profile for. Minimum focus distance is 13cm with magnification 1:1. The latter means that the picture is completely filled by any object that is as big as the sensor. --> The full test chart needs to be less than 2cm small.
In that regard your example of a 400mm lens is the easy thing because of the 12 feet distance. Anything is easy to shoot from 4m aways as you can use normal charts.
2. As I described the guide says that the chart should fill about 50% of the picture and you should use one chart. Even in your example obviously the size of the chart on the picture will vary in a real big way if you shoot the same chart with a 400mm lens from 12 feet and from 60 feet. I just wonder if that is what is correct or one should choose a different chart for each distance (I dont believe that).

Quick and DIRTY Canon S90 lens correction

From ACR 6.1 choose the Canon G10 profile, make it the default for the S90, set Distortion slider to 85, CA slider to 105, Vignette left at default 100. I picked the values examining a 6mm (widest) brick wall image, then checked tracking for other focal lengths. Does a surprisingly good job, certainly adequate for 99% of my S90 images.
Richard Southworth

LR does not ship with a separate profile for each body, against each lens. The camera model info here, AFAICT just notifies you what camera the lens was mounted on, when the profile was created.
The same profile can quite happily work for other camera models too - even so far as, automatically extracting just the relevant middle coverage out of a FF lens profile, to correct images taken from a crop sensor body with the same lens mounted. (This will of course not work the other way around).
The profile's aim is to characterise the lens optical performance, which does not per se change when you move it between cameras - (although this may not be quite 100% precise, e.g. in terms of vignetting off microlenses etc, it is normally quite good enough IMO). In the past, profiles used to address CA as well, and I believe this issue was more sensor dependent (the newer LR CA correction does not depend on the profile).
If the need is a critical one, then your individual lens copy and your individual camera body can be used to "close the loop", and generate an empirically "perfect" custom profile. It's not very hard to print out and photograph the special targets, and then run the free DNG Profile utility; you can put as much or as little effort as you like into the number of focal lengths and apertures that you include. But if the supplied standard profile is good enough to save you that trouble altogether, it may not matter that it is not the theoretical best.
AFAICT, the installed / downloaded profile is likely more subject to LENS sample variation (between your lens, and the one used to make the profile) - than, anything to do with using a different camera model.
RP

Lens Correction? Search by Focal Length?

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