Blue Hour Duration

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Today’s Question: I have recently moved from Houston to northern Michigan. I noticed that the twilight time is increased here. My question regards the blue hour. Does it also increase (more than the hour before sunrise or after sunset)? Also, is the blue hour altered when it is overcast?

Tim’s Quick Answer: The duration of “blue hour” does indeed vary depending on your position on the globe, with the duration being longer near the poles and shorter near the equator.

More Detail: One of the first things to understand about blue hour is that it isn’t really considered to be a full hour in duration. The term is really just a shorthand reference to that period a bit after sunset or before sunrise when the sky is illuminated with blue light and the landscape is still relatively dark.

The actual duration of blue hour (which doesn’t really have a strict definition) depends upon the relative speed of the sunset (or sunrise). The closer you are to the poles, the longer blue hour will last. The closer you are to the equator, the shorter blue hour will be.

For example, a recent calculation for blue hour using one particular app shows that in New York City the duration is 39 minutes, while in Miami, Floria, blue hour will only last 32 minutes.

The priority for planning a given photo should obviously be the specific location and subject matter available, of course. But it is worth keeping in mind that when you are farther north or south from the equator, blue hour will last a bit longer. And when you are closer to the equator, blue hour will be of a shorter duration.

It is also worth noting that the duration of the sunrise or sunset will also be affected by your position, with the sunrise or sunset taking longer the farther you are from the equator.

As for overcast conditions, that is something of a mixed issue. Generally speaking, you’ll get the best blue hour effect when the sky is as clear as possible. That said, if the conditions are just right, partial overcast clouds can provide an interesting effect. Those clouds can potentially reflect some of the color of blue hour, but perhaps more interesting is that low clouds can reflect some of the color of the lights of the scene you are photographing, assuming there are lights available to illuminate the clouds.

Instagram Breaks Plugins

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Today’s Question: Regarding the Lightroom plugin you mentioned [for posting photos directly to Instagram from a computer], they have a big notice on their site at the moment saying it does not currently function: “Service Note: Instagram has updated their protocol and currently plugin does not work. We are investigating the issue and the plugin will be updated when a fix is available”.

Tim’s Quick Answer: I have confirmed that the LR/Instagram plugin (https://www.lrinstagram.com) that I recommended recently is no longer working. This is, unfortunately, a somewhat common issue with platforms such as Instagram.

More Detail: As I mentioned in a previous answer about posting to Instagram from a computer rather than a mobile device, there are more than a few limits placed by Instagram that can introduce roadblocks.

One such issue is that changes in Instagram can cause plugins to no longer work. The developer of the plugin must then make changes (if possible) so their software will once again function normally. Sometimes this is successful, and sometimes it is not.

It remains to be seen whether the LR/Instagram plugin will be updated to a functional state anytime soon. In the meantime, another application recommended by a reader is called Flume. This application is only available for Macintosh, but it does enable you to upload photos to Instagram directly from your computer. There have been issues with this application not functioning completely at times, but it does appear to be fully functional for now. You can find Flume here:

https://flumeapp.com

While I still enjoy sharing my photos on Instagram, I will admit that the restrictions implemented on this platform can be frustrating. If you’re comfortable using Instagram on a mobile device, you’ll generally have a very good experience. If you prefer to use a computer, there will be challenges.

Note that you can find my photos (and follow me!) on my Instagram page here:

https://www.instagram.com/timgreyphoto/

Will Keywording be Obsolete?

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Today’s Question: Do you think that the use of keywords in Lightroom Classic will eventually be replaced by Adobe Sensei, or some other form of AI [artificial intelligence]? The cloud-based version of Lightroom is already using Sensei to find photos.

Tim’s Quick Answer: Given enough time, I would say that image analysis will most certainly replace most basic keywording tasks. I assume that will apply to a future version of Lightroom Classic, among other software.

More Detail: The cloud-based version of Adobe Lightroom, along with the Adobe Photoshop Elements Organizer, already include search based on image analysis. In other words, the software can analyze your photos to the point that if you search for the word “airplane”, you’ll see search results that should include photos of airplanes (assuming you have any such photos).

Of course, you’ll also likely find that the search results include photos that don’t actually include the subject you were searching for. The arrangement of shapes in the photo may have simply resembled the subject you were searching for, tricking the image analysis into thinking the photo was something it wasn’t.

With time, image analysis technology will improve. That will mean greater accuracy for search results, as well as a much wider range of terms that can be searched for. It would be helpful, for example, to be able to search based on concepts, beyond just the names of physical objects that appear in your photos.

The only real question is how long it will take for technology to get to the point that image analysis can effectively replace the need to add keywords to photos.

That said, there would likely be terms you would still want to add as keywords to your photos. Those might include keywords that relate to abstract concepts, for example, or perhaps keywords that indicate a photo has been used in a particular project.

The point is that keywording will surely become more obsolete in the future. The only questions relate to how soon, and to what extent you can reduce the number of keywords you might add to a photo.

You can view a recording of the webinar presentation I gave on the subject of keywording photos on my Tim Grey TV channel on YouTube here:

https://youtu.be/yNXUrIlaYFI

Colorize a Black and White

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Today’s Question: I know there is a way to add a little color to a black and white photo in Photoshop, but is there a way to do that in Lightroom [Classic]?

Tim’s Quick Answer: Yes, you can colorize a black and white photo in Lightroom Classic using the Color option in conjunction with the Adjustment Brush tool. However, in Lightroom Classic the process is a bit more complicated in some ways than it would be in Photoshop.

More Detail: In Photoshop it is possible to paint color into a black adn white photos by adding a single empty image layer to the image, changing the blend mode for that layer to Color, and then painting with various colors on that layer. This enables you to use a single layer to paint many colors in different areas of the photo.

In Lightroom Classic it is not quite as streamlined. You can paint color into an image with an Adjustment Brush targeted adjustment, but you’ll need to add a new adjustment for every color you want to use.

To get started, you can click the Adjustment Brush button at the far right of the small toolbar that appears below the Histogram section of the right panel in the Develop module. By default the option will be set to New (rather than Edit) to create a new adjustment. Click the color swatch associated with the Color label, and select a color. Note that you are only able to select a color by defining a hue and saturation, without a brightness control.

After selecting a color, you can adjust the brush settings for the Adjustment Brush tool, and then paint directly on the image to add the color. If you then change the Color setting, the color will change for the current adjustment, which may not be an intended change. If you want to paint with a different color you’ll need to add a new adjustment for the Adjustment Brush.

To add a new adjustment, click the New layer to the right of the Mask label at the top of the adjustments for the Adjustment Brush. Then select a new color, and paint to apply that color to areas of the image.

If you want to modify an existing adjustment, you can click on the adjustment button, which will appear in the position on the image where you first clicked to paint with the color you want to adjust. You can then paint (or erase) to refine the area affected by the color, or change the actual color if you’d like to fine-tune the effect.

The key challenge with this approach in Lightroom is that you’ll have an individual adjustment button for every color you want to paint into the image, which can get a little cumbersome and confusing if you want to paint a relatively large number of colors into your black and white image.

Instagram without Mobile

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Today’s Question: I see you have posted a lot of your photos on Instagram and I have just signed up for an account. But it seems that the only way to get my photos posted in via my iPhone. I want to use my Instagram account to let my friend and family look at my work. As most of my photo work is located on my desktop is the only way to post to Instagram by sending to my iPhone and then uploading? There has to be an easier way and hopefully you will offer some options.

Tim’s Quick Answer: You can share photos to Instagram from a computer by either using a software tool designed for this purpose (such as the LR/Instagram plug-in for Adobe Lightroom Classic), or by using a feature that simulates a mobile device with the web browser on your computer.

More Detail: Instagram does employ a number of restrictions, but in many cases you can work around those restrictions.

Early on, for example, Instagram only allowed you to share photos that had been cropped to a square, so if you wanted to post a non-square image you needed to add space around the rectangular photo to put it into a square frame. That limitation has since been lifted, but you are still limited in the aspect ratio you can use, which is especially limiting for vertical photos.

One limitation that still exists is the strong emphasis on sharing photos directly from a mobile device. The idea is that Instagram is (or at least was) intended to share photos in real time that were captured with a mobile device. Therefore, at least in theory, you must use the Instagram app on a mobile device to share photos on Instagram.

There are a couple of other options, however. For example, the LR/Instagram plug-in for Lightroom Classic enables you to publish photos to Instagram directly from your Lightroom catalog. You can find the LR/Instagram plug-in here:

https://www.lrinstagram.com/

Another option that can be very convenient is the ability to simulate a mobile device using the web browser on your computer, and then using that simulated environment to post photos to Instagram. You can read an article about this process on the GreyLearning blog here:

http://greylearningblog.com/how-to-share-photos-on-instagram-from-a-computer/

And, of course, you can also synchronize photos from your computer to your mobile device to make those photos available for sharing from within the Instagram app. For example, I export photos I want to share on Instagram to a folder in the Pictures folder on my computer. I then enable that folder for synchronization to my iPhone. This enables me to share some of my favorite photos with others directly on my iPhone, and also makes it easy to then publish those photos using the Instagram app on my iPhone.

By the way, you can find my Instagram feed (and follow me) by searching for me as @timgreyphoto, or by pointing your web browser here:

https://www.instagram.com/timgreyphoto/

Keywording for Stock Photography

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Today’s Question: What special considerations (content, workflow, etc.) apply when creating keywords for images that will be submitted to stock agencies such as Getty Images or iStock?

Tim’s Quick Answer: To me, when keywording photos that will be submitted to a stock photography agency, there are several key considerations. First, you want to ensure that the keywords are accurate. You also want to be thorough, in line with the submission guidelines of the agency you’ll submit the photos to. You also want to try to make sure the keywords will help the photo be found by a client who may be interested in using the image.

More Detail: Each stock photography agency has their own guidelines for keywording photos. You’ll typically find that it will be recommended that a photo include at least five keywords (which I consider a very low number) and as many as around fifty keywords (which I think is probably a better target for many images).

The whole point of adding keywords to images that will be featured in a stock photography library is to ensure that customers can actually find a photo that will suit their needs. It is important, however, that the keywords be accurate, so that a photo will only be included in a search result if it is likely to fit the needs of the client.

The first step is to add keywords that describe the actual content of the photo, such as the name of the location where the photo was captured. Next, I recommend adding any keywords that might describe concepts the photo helps illustrate. For example, for a photo of a fast-moving subject incorporating a motion blur effect you could add keywords such as “speed” and “fast”.

I think it can be helpful to imagine all of the various ways a given photo might be used. In other words, consider what sorts of emotions does the photo evoke, and try to keyword based on those concepts. When in doubt, it is generally best to have more keywords rather than fewer when the intent is to submit images to a stock photography agency.

But again, be sure to review the submission guidelines for each stock agency you intend to submit photos to, so you can be sure to follow those guidelines carefully.

Folder Mismatch with Merged Catalog

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Today’s Question: When traveling I download daily to a laptop and back up to a solid state external hard drive. At the end of the trip I export everything as a catalog. Back home I copy the catalog files to the home computer hard drive. However, when I “import from another catalog” in Lightroom the resulting folder structure doesn’t match my original folder structure used during the trip. This results in two or three sub-folders which I do not need or want. Is there a way to avoid the sub-folders in the first place?

Tim’s Quick Answer: My recommendation is to use the option to add photos from their current location when using the “Import from Another Catalog” feature in Lightroom Classic. You can then move the folder containing your photos to the master storage location as a separate step. In this case I suspect you are using the Copy option, and defining a lower-level folder as the destination than you need.

More Detail: When you return from a trip where you have used a separate catalog for downloading and managing photos along the way, you’ll want to merge that catalog with your master catalog at home. This typically involves first using the “Export as Catalog” command to export a copy of your traveling catalog as well as copies of all photo the photos in the catalog to an external hard drive. This enables the exported catalog and photos to be available on the computer where your master catalog resides.

You can then connect the external hard drive to the computer where your master catalog resides, and then use the “Import from Another Catalog” command. I recommend keeping this process simple by making use of the option to add the photos at their current location, rather than copying them to a different location.

Then, after the process has completed, the photos imported from your traveling catalog will still be on the external hard drive. You can then drag the folder containing the images on that external drive to the location you use for storing all of your photos, and the folder and all of its contents will be moved. This also ensures that Lightroom knows where the folder has moved to, so none of your photos will go missing in the process.

After completing these tasks, you can retain the traveling catalog and photos as a backup until you’ve had a chance to update your backup.

Note that this overall process is covered in my “Real-World Organizational Workflow” course, which you can find in the GreyLearning library here:

https://www.greylearning.com/courses/real

Keyword List Limit

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Today’s Question: In [Lightroom Classic for] Windows there is a maximum number of keywords that can be shown either in the Keyword list or the Metadata list. What is the maximum?

Tim’s Quick Answer: The reports I’ve seen indicate that if you have more than 3,270 keywords on the Keyword List in the Windows version of Adobe Lightroom Classic, you won’t be able to scroll down the list beyond that point. This issue does not affect the Macintosh version of Lightroom Classic.

More Detail: I was actually completely unaware of this issue until it was raised in a question during my webinar presentation yesterday on the subject of keywording (https://youtu.be/yNXUrIlaYFI). It turns out that if you have a very large list of keywords in your Lightroom Classic catalog on Windows, you can’t scroll past a certain point.

This affects both the Keyword List found on the right panel in the Library module, as well as the same list available as a filter in the Metadata section of the Library Filter bar. Once you exceed the maximum number of keywords (which is apparently 3,270 from what I’ve been able to gather), you won’t be able to scroll on the list past that point.

One solution would be to create a hierarchy so that the top-level of the Keyword List had fewer items on it. For example, you could create a “parent” keyword for every letter of the alphabet, and then add keywords as a “child” of that parent. The parent keywords could then be set to not export, to avoid confusion when exporting photos.

Although I wasn’t aware of this limitation, it turns out that it has been a problem for a number of years, so naturally there is concern that there may be a fundamental issue preventing a fix.

Hierarchical Keywords

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Today’s Question: What are your thoughts about whether or not to use hierarchical keywords? It seems like they could greatly automate a workflow.

Tim’s Quick Answer: I don’t consider hierarchical keywords to be a critical component of a workflow for organizing photos, but in certain situations they can certainly be very helpful.

More Detail: Hierarchical keywording is actually a subject I’ll address in today’s GreyLearning Webinar presentation on “Keywording Strategies and Workflow”. A hierarchical keyword is a keyword that exists within a defined hierarchy.

For example, a Bald Eagle is an Eagle, an Eagle is a Raptor, and a Raptor is a Bird. Based on this relationship, when we are talking about a Bald Eagle we also know we are talking about a Bird. If you define a keyword hierarchy where a Bald Eagle is defined as being a Bird, you can simply add “Bald Eagle” as a keyword and “Bird” will be related by association.

In the example above, “Bird” would not actually be added as a keyword to the image when you add “Bald Eagle” as a keyword. However, in software such as Lightroom Classic, after adding “Bald Eagle” as a keyword, a search for “Bird” would include the bald eagle photo in the search results.

This example demonstrates the potential workflow advantage of hierarchical keywords. Instead of adding multiple keywords from a given hierarchy to a photo, you can simply add the “lowest” keyword in that hierarchy. So you could add “Bald Eagle” as a keyword to a photo, and the photo would be searchable based on related terms Eagle, Raptor, Bird, and Animal.

That said, creating hierarchical keywords can be rather time-consuming. In addition, hierarchical keywords can result in a somewhat cluttered keyword list, since many of your keywords may now have a relatively large number of “parent” terms associated with them.

For my own workflow I have reached the conclusion that hierarchical keywords do not provide adequate value to justify the additional work and clutter that is involved. That said, for photographers who submit photos to stock photography agencies, hierarchical keywords can represent a considerable advantage. This is especially true since software such as Lightroom Classic enables you to include the “parent” keywords in the hierarchy based on the keywords you actually added to a photo, even if those parent keywords were never added to the metadata for the photo.

So, on balance I don’t personally feel it is worthwhile to make use of hierarchical keywords. However, some photographers can certainly achieve great benefits from their use.

Best Adjustment for Sharpening (and Detail)

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Today’s Question: In your recent webinar “Lightroom Classic: New Features and Workflow Tips” you discuss the Texture, Clarity and Dehaze sliders in the Basic Section. I was wondering how these compare with the Sharpening sliders in the Detail section. I often photograph birds and do some sharpening of the feathers. Do these adjustments do the same thing or should one use both?

Tim’s Quick Answer: Texture and Sharpening are the most similar among these adjustment controls (Dehaze, Clarity, Texture, and Sharpening), but I still recommend using both Texture (as appropriate) and Sharpening for slightly different purposes.

More Detail: As noted in my recent webinar presentation (https://youtu.be/5OvbCBY3KXw), the Dehaze, Clarity, and Texture adjustments (as well as Sharpening) serve a very similar purpose.

Each of these adjustments is primarily focused on enhancing overall detail in a photo. The key difference is scale. Dehaze is focused on enhancing detail at the largest scale, Clarity is somewhere in the middle, and Texture is focused on the smallest details in a photo (such as fine feather detail for bird photos).

Sharpening is slightly unique in that you can adjust the scale to some extent with the Radius slider. That potentially puts Sharpening somewhere in between Texture and Clarity in terms of the overall scale.

The emphasis of Sharpening compared to Texture is slightly different. Sharpening is intended to compensate for less than optimal sharpness, caused by shortcomings of the lens, among other issues. In effect, the Sharpening controls are intended to help you get the image back to the sharpest starting point, as if no focus had been lost in the process of capturing the photo.

Texture is a little different in that it is aimed at helping you emphasize fine details and textures in the photo. This will typically go beyond what is possible with sharpening when it comes to the added contrast for those fine details.

In addition, the Dehaze, Clarity, and Texture controls are a little more “intelligent” in the background, focusing on specific ranges of contrast enhancement and detail size within the photo. So, for example, Texture will help enhance fine details, but won’t reduce the appearance of atmospheric haze in a photo. Conversely, Dehaze will help cut through haze, but won’t enhance details at the smallest scale in a photo.

I recommend applying at least a small amount of sharpening to every photo, early in your workflow. I then recommend using the three detail enhancement adjustments (Dehaze, Clarity, and Texture) as appropriate to the specific photo you are working on along with your specific goals for that photo.

Note that you can watch the full recording of my recent presentation on “Lightroom Classic: New Features and Workflow Tips” on my Tim Grey TV channel on YouTube here:

https://youtu.be/5OvbCBY3KXw