Tag: histogram

Camera Pixels App (Updated Review): Significant improvements in the new version make this a best-in-class app

I’ve posted repeatedly about the importance of understanding how to take manual control of your camera in order to make images that are properly exposed and focused.  Whether you are using a professional DSLR, an advanced full-frame mirrorless ILC, a compact point-and-shoot, or the camera built into your smart phone, there is no way you will get consistently acceptable results if you leave the camera’s settings to its auto mode.  See this post for an overview: Post on Beyond the Auto Mode.

About three months ago, I posted a review of an early version of an iPhone app called “Camera Pixels”.  In that review, I found the app to be a very promising concept due to its advanced DSLR-like features and intuitive controls, but I couldn’t fully endorse it in the earlier version because I found several bugs and interface quirks.  You can read that earlier review here: Previous review of early version of Camera Pixels app.  Since that review was published, I have had several discussions with the Camera Pixels support team to detail my concerns about the various issues I found.

For the past two days I have been testing a new version of the Camera Pixels app, and I can now recommend it wholeheartedly.  The new release preserves the advanced features and (relatively) simple interface of the earlier version, but it has addressed all of the significant issues I outlined in my review of the previous release.  Specifically:

  • the image flicker in the “viewfinder” area of the screen has been eliminated,
  • the bracketing of exposures now retains the proper requested spacing (unless at a physical limit of a setting),
  • there is a new “Pro View” mode that keeps the manual settings toolbar always on the screen so any manual overrides are immediately apparent, and
  • the controls to separate the exposure point from the focus point are now more intuitive.

Like the “Manual” camera app that I’ve been using for years and the “ProCam 4” app that has been my go-to camera control app for the past several months, the new “Camera Pixels” app allows the manual selection of ISO, shutter speed, exposure compensation, and focus distance (note that the iPhone camera’s lens has a fixed aperture, so F-stop cannot be manually set).  Also like the Manual app and the ProCam 4 app, Camera Pixels allows images to be captured using RAW mode, which has a great many advantages over capture in JPEG format (see this post for more information: Post on RAW Capture).  And all three of these camera apps display a histogram to assist in setting exposure properly.  

In addition, both Camera Pixels and ProCam 4 (but not Manual) offer some very useful advanced camera control capabilities, including the following:

  • Shutter Priority: You can choose an exposure mode in which you select the shutter speed first and the app will set the appropriate ISO.
  • Exposure Bracketing: You can shoot a series of four shots at different exposures to increase the likelihood that one of them will be at the best exposure for the lighting conditions.  The series of shots can also be combined using HDR tools found in Lightroom, Photoshop, and other editing software into a single image with a higher range of tones from very dark to very bright.
  • White Balance: You can adjust white balance in the app, which is often preferable to having to adjust it in your RAW files during post-processing.
  • Virtual Horizon: The display can show you when the horizon is level.
  • Slow Shutter Options: You can select long fixed shutter speeds as well as bulb mode to keep the shutter open for as long as you’d like.
  • RAW+JPEG: You can choose to store the image in both RAW and JPEG formats.

With all this incremental functionality, your little phone’s camera begins to behave a lot like a more advanced standalone camera.  While the iPhone’s camera, with its small sensor and its tiny fixed-aperture non-interchangeable lens, still cannot compare to a professional or enthusiast DSLR or ILC camera, the results using an advanced manual camera control app such as Camera Pixels or ProCam 4 are vastly improved compared to using the phone’s native camera app.  At iTunes App Store pricing of $2.99 for Camera Pixels or $4.99 (temporarily reduced to $1.99) for ProCam 4, either of these apps is a great buy and a serious enhancement to the iPhone’s built-in camera.

There are some significant differences between Camera Pixels and ProCam 4.  ProCam 4 offers advanced image editing capabilities, while Camera Pixels does not.  However, Camera Pixels offers more flexible exposure bracketing options, the ability to separate exposure point from focus point, a better histogram, and more advanced RAW and video shooting options.  And a significant advantage of the new Camera Pixels app over ProCam 4 is its simple and intuitive user interface for setting and resetting the manual camera control features such as exposure compensation, shutter priority, and ISO priority.  In fact, the Camera Pixels app comes the closest I’ve ever found to the user interface of an advanced DSLR or mirrorless camera.

One note to enhance the usability of the Camera Pixels app: As far as I can tell, there is no built-in help content in the app itself, but there is a very useful online user guide available from the app’s developers.  You can find the user guide here: Camera Pixels app user guide.

In summary, the new Camera Pixels app is a great concept that comes closest of any camera control app I’ve found to the look-and-feel of an advanced standalone camera.  With the greatly improved new release, Camera Pixels has become the best option I’ve found for iPhone users wishing to control the phone’s built-in camera like an advanced DSLR or mirrorless standalone camera.  I now fully recommend this app, and I plan to use it as my first choice for advanced control of my iPhone’s camera.

Here’s the link to the Camera Pixels app on the Apple App Store: Camera Pixels app.

What app do you use to control your phone’s camera?  What do you like and dislike about it?  Please share your thoughts here.

Want to read more posts about photography gear?  Find them all here: Posts on Gear.

 

Bracketing: Hedging Your Bets [Encore Publication]: In challenging shooting conditions, exposure bracketing is a great insurance policy

In the old film days of photography, it would be days or even weeks after shooting before we could see the results.  I would routinely use a procedure called “bracketing” to make a series of shots, each at a slightly different exposure, to increase the odds that one would come out decently exposed.  Even today, when digital photography allows us to see the results immediately, there are two good reasons to employ the exposure bracketing technique: 1) it can be hard to assess on a small LCD screen in bright daylight and while in the excitement of shooting whether the exposure is really correct, and 2) when the contrast between the brighter and dimmer parts of the scene is high we may want to stitch several different exposures together using software to create a high dynamic range (HDR) image later.

Tricky subjects, like this tiny Svalbard reindeer against a glacier background, benefit greatly from exposure bracketing.  From a series of 5, 7, or even 9 images shot at slightly different exposures, you can choose the one with the correct exposure for the conditions.  Buy this photo

So there are still good reasons to use exposure bracketing, and fortunately, it is quite easy to employ this technique.  Here’s how.

If possible, mount your camera on a tripod when using bracketing so it won’t move between exposures.  Then you can combine several of the exposures into an HDR image later if desired.

If your camera has a bracketing button or menu item, use it to specify how many shots you want to take (I usually shoot 5 or 7 different exposures when bracketing) and how much you want to vary the exposure between each shot and the next (often I choose a 1-stop difference).  If your camera lacks this feature, you can still use bracketing by manually adjusting the exposure between each shot and the next; just use your camera’s exposure compensation control to dial in first -2 stops, then -1 stop, then 0, then +1 stop, and finally +2 stops.

I like to set my camera for continuous shooting while bracketing.  That way, I just hold down the remote shutter release and the camera shoots all 5 or 7 exposures in rapid succession.  But it’s fine to shoot each frame individually in single release mode, if you prefer.

There are some subtleties to think about when employing exposure bracketing.  Some cameras let you choose whether to vary the aperture, the shutter speed, or the ISO setting, while holding the other two settings constant.  In most cases, I prefer to vary the shutter speed and hold the aperture and ISO settings constant, because changing the aperture affects the images’s depth-of-field, and changing the ISO setting can affect the noise in the image.

Later, during post-processing, you review the images and choose the one that is properly exposed.  Or if the scene is very high contrast, you can use photo editing software such as Lightroom or Photoshop to stitch several frames in your series together into an HDR image, which ensures good exposure from the brightest to the darkest tones in your photo.

Several exposures were shot using bracketing and then combined in Photoshop to create this HDR  image.  All tones from the darkest shadows on the mountain walls to the brightest highlights on the icebergs and lake are properly exposed in the final image.  Buy this photo

Have you used exposure bracketing techniques?  What are your best practices?  Do you use this process mostly for selecting the best exposure or for creating HDR images?  Please share your thoughts here.

Are you interested in learning new travel photography techniques?  Follow this link to see all the posts on techniques: http://www.to-travel-hopefully.com/category/techniques/.

Camera Pixels App Review: A great concept but still needs work

I’ve posted repeatedly about the importance of understanding how to take manual control of your camera in order to make images that are properly exposed and focused.  Whether you are using a professional DSLR, an advanced full-frame mirrorless ILC, a compact point-and-shoot, or the camera built into your smart phone, there is no way you will get consistently acceptable results if you leave the camera’s settings to its auto mode.  See this post for an overview: Post on Beyond the Auto Mode.

For the past two days I have been testing an iPhone app called “Camera Pixels”.  Full Disclosure: The developer of Camera Pixels requested I test their new app and offered me a free download for trial, but to preserve my independence I paid for the download myself.

Like the “Manual” camera app that I’ve been using for years and the “ProCam 4” app that has been my go-to camera control app for the past several months, the new “Camera Pixels” app allows the manual selection of ISO, shutter speed, exposure compensation, and focus distance (note that the iPhone camera’s lens has a fixed aperture, so F-stop cannot be manually set).  Also like the Manual app, ProCam 4 allows images to be captured using RAW mode, which has a great many advantages over capture in JPEG format (see this post for more information: Post on RAW Capture).  And all three of these camera apps display a histogram to assist in setting exposure properly.  

In addition, both Camera Pixels and ProCam 4 (but not Manual) offer some very useful advanced camera control capabilities, including the following:

  • Shutter Priority: You can choose an exposure mode in which you select the shutter speed first and the app will set the appropriate ISO.
  • Exposure Bracketing: You can shoot a series of four shots at different exposures to increase the likelihood that one of them will be at the best exposure for the lighting conditions.  The series of shots can also be combined using HDR tools found in Lightroom, Photoshop, and other editing software into a single image with a higher range of tones from very dark to very bright.
  • White Balance: You can adjust white balance in the app, which is often preferable to having to adjust it in your RAW files during post-processing.
  • Virtual Horizon: The display can show you when the horizon is level.
  • Slow Shutter Options: You can select long fixed shutter speeds as well as bulb mode to keep the shutter open for as long as you’d like.
  • RAW+JPEG: You can choose to store the image in both RAW and JPEG formats.

With all this incremental functionality, your little phone’s camera begins to behave a lot like a more advanced standalone camera.  While the iPhone’s camera, with its small sensor and its tiny fixed-aperture non-interchangeable lens, still cannot compare to a professional or enthusiast DSLR or ILC camera, the results using an advanced manual camera control app such as Camera Pixels or ProCam 4 are vastly improved compared to using the phone’s native camera app.  At iTunes Store pricing of $3.99 for Camera Pixels or $4.99 for ProCam 4, either of these apps is a great buy and a serious enhancement to the iPhone’s built-in camera.

There are some significant differences between Camera Pixels and ProCam 4.  ProCam 4 offers advanced image editing capabilities, while Camera Pixels does not.  However, Camera Pixels offers more flexible exposure bracketing options, the ability to separate exposure point from focus point, a better histogram, and more advanced RAW and video shooting options.  And a significant advantage of the new Camera Pixels app over ProCam 4 is its user interface for setting and resetting the manual camera control features such as exposure compensation, shutter priority, and ISO priority.  In fact, the Camera Pixels app comes the closest I’ve ever found to the user interface of an advanced DSLR or mirrorless camera.

Unfortunately, in its current state I cannot unreservedly recommend the Camera Pixels app.  I encountered too many glitches during my brief testing to be able to give this app a glowing review at this time.  Here are a few of the issues I noted:

  • The “viewfinder” (image preview on the screen) flickers intermittently, which can be very distracting when trying to compose images.
  • The bracketing exposure settings are sometimes incorrectly spaced, i.e., instead of being exposed at -3, -2, -1, 0, +1, +2, and +3; the sequence may be exposed at -3, -2, -1, 0, +1, +1, and +1.
  • It can be hard to tell if manual overrides are set, leading to incorrect exposures.
  • The very useful feature to separate the exposure point from the focus point doesn’t always work.

In summary, the new Camera Pixels app is a great concept that comes closest of any camera control app I’ve found to the look-and-feel of an advanced standalone camera; however, there are significant bugs in the current version that hamper the shooting experience.  With further development to fix the problems, Camera Pixels could become an excellent option for iPhone users wishing to control the phone’s built-in camera like an advanced DSLR or mirrorless standalone camera.  I will eagerly await the next revision of this app.

Here’s the link to the Camera Pixels app on the Apple App Store: Camera Pixels app.

You can find the ProCam 4 app here: ProCam 4 app.

What app do you use to control your phone’s camera?  What do you like and dislike about it?  Please share your thoughts here.

Want to read more posts about photography gear?  Find them all here: Posts on Gear.

Camera Pixels App Review: A great concept but still needs work

 

I’ve posted repeatedly about the importance of understanding how to take manual control of your camera in order to make images that are properly exposed and focused.  Whether you are using a professional DSLR, an advanced full-frame mirrorless ILC, a compact point-and-shoot, or the camera built into your smart phone, there is no way you will get consistently acceptable results if you leave the camera’s settings to its auto mode.  See this post for an overview: Post on Beyond the Auto Mode.

For the past two days I have been testing an iPhone app called “Camera Pixels”.  Full Disclosure: The developer of Camera Pixels requested I test their new app and offered me a free download for trial, but to preserve my independence I paid for the download myself.

Like the “Manual” camera app that I’ve been using for years and the “ProCam 4” app that has been my go-to camera control app for the past several months, the new “Camera Pixels” app allows the manual selection of ISO, shutter speed, exposure compensation, and focus distance (note that the iPhone camera’s lens has a fixed aperture, so F-stop cannot be manually set).  Also like the Manual app, ProCam 4 allows images to be captured using RAW mode, which has a great many advantages over capture in JPEG format (see this post for more information: Post on RAW Capture).  And all three of these camera apps display a histogram to assist in setting exposure properly.  

In addition, both Camera Pixels and ProCam 4 (but not Manual) offer some very useful advanced camera control capabilities, including the following:

  • Shutter Priority: You can choose an exposure mode in which you select the shutter speed first and the app will set the appropriate ISO.
  • Exposure Bracketing: You can shoot a series of four shots at different exposures to increase the likelihood that one of them will be at the best exposure for the lighting conditions.  The series of shots can also be combined using HDR tools found in Lightroom, Photoshop, and other editing software into a single image with a higher range of tones from very dark to very bright.
  • White Balance: You can adjust white balance in the app, which is often preferable to having to adjust it in your RAW files during post-processing.
  • Virtual Horizon: The display can show you when the horizon is level.
  • Slow Shutter Options: You can select long fixed shutter speeds as well as bulb mode to keep the shutter open for as long as you’d like.
  • RAW+JPEG: You can choose to store the image in both RAW and JPEG formats.

With all this incremental functionality, your little phone’s camera begins to behave a lot like a more advanced standalone camera.  While the iPhone’s camera, with its small sensor and its tiny fixed-aperture non-interchangeable lens, still cannot compare to a professional or enthusiast DSLR or ILC camera, the results using an advanced manual camera control app such as Camera Pixels or ProCam 4 are vastly improved compared to using the phone’s native camera app.  At iTunes Store pricing of $3.99 for Camera Pixels or $4.99 for ProCam 4, either of these apps is a great buy and a serious enhancement to the iPhone’s built-in camera.

There are some significant differences between Camera Pixels and ProCam 4.  ProCam 4 offers advanced image editing capabilities, while Camera Pixels does not.  However, Camera Pixels offers more flexible exposure bracketing options, the ability to separate exposure point from focus point, a better histogram, and more advanced RAW and video shooting options.  And a significant advantage of the new Camera Pixels app over ProCam 4 is its user interface for setting and resetting the manual camera control features such as exposure compensation, shutter priority, and ISO priority.  In fact, the Camera Pixels app comes the closest I’ve ever found to the user interface of an advanced DSLR or mirrorless camera.

Unfortunately, in its current state I cannot unreservedly recommend the Camera Pixels app.  I encountered too many glitches during my brief testing to be able to give this app a glowing review at this time.  Here are a few of the issues I noted:

  • The “viewfinder” (image preview on the screen) flickers intermittently, which can be very distracting when trying to compose images.
  • The bracketing exposure settings are sometimes incorrectly spaced, i.e., instead of being exposed at -3, -2, -1, 0, +1, +2, and +3; the sequence may be exposed at -3, -2, -1, 0, +1, +1, and +1.
  • It can be hard to tell if manual overrides are set, leading to incorrect exposures.
  • The very useful feature to separate the exposure point from the focus point doesn’t always work.

In summary, the new Camera Pixels app is a great concept that comes closest of any camera control app I’ve found to the look-and-feel of an advanced standalone camera; however, there are significant bugs in the current version that hamper the shooting experience.  With further development to fix the problems, Camera Pixels could become an excellent option for iPhone users wishing to control the phone’s built-in camera like an advanced DSLR or mirrorless standalone camera.  I will eagerly await the next revision of this app.

Here’s the link to the Camera Pixels app on the Apple App Store: Camera Pixels app.

You can find the ProCam 4 app here: ProCam 4 app.

What app do you use to control your phone’s camera?  What do you like and dislike about it?  Please share your thoughts here.

Want to read more posts about photography gear?  Find them all here: Posts on Gear.

Bracketing: Hedging Your Bets [Encore Publication]: In challenging shooting conditions, exposure bracketing is a great insurance policy

In the old film days of photography, it would be days or even weeks after shooting before we could see the results.  I would routinely use a procedure called “bracketing” to make a series of shots, each at a slightly different exposure, to increase the odds that one would come out decently exposed.  Even today, when digital photography allows us to see the results immediately, there are two good reasons to employ the exposure bracketing technique: 1) it can be hard to assess on a small LCD screen in bright daylight and while in the excitement of shooting whether the exposure is really correct, and 2) when the contrast between the brighter and dimmer parts of the scene is high we may want to stitch several different exposures together using software to create a high dynamic range (HDR) image later.

Tricky subjects, like this tiny Svalbard reindeer against a glacier background, benefit greatly from exposure bracketing.  From a series of 5, 7, or even 9 images shot at slightly different exposures, you can choose the one with the correct exposure for the conditions.  Buy this photo

So there are still good reasons to use exposure bracketing, and fortunately, it is quite easy to employ this technique.  Here’s how.

If possible, mount your camera on a tripod when using bracketing so it won’t move between exposures.  Then you can combine several of the exposures into an HDR image later if desired.

If your camera has a bracketing button or menu item, use it to specify how many shots you want to take (I usually shoot 5 or 7 different exposures when bracketing) and how much you want to vary the exposure between each shot and the next (often I choose a 1-stop difference).  If your camera lacks this feature, you can still use bracketing by manually adjusting the exposure between each shot and the next; just use your camera’s exposure compensation control to dial in first -2 stops, then -1 stop, then 0, then +1 stop, and finally +2 stops.

I like to set my camera for continuous shooting while bracketing.  That way, I just hold down the remote shutter release and the camera shoots all 5 or 7 exposures in rapid succession.  But it’s fine to shoot each frame individually in single release mode, if you prefer.

There are some subtleties to think about when employing exposure bracketing.  Some cameras let you choose whether to vary the aperture, the shutter speed, or the ISO setting, while holding the other two settings constant.  In most cases, I prefer to vary the shutter speed and hold the aperture and ISO settings constant, because changing the aperture affects the images’s depth-of-field, and changing the ISO setting can affect the noise in the image.

Later, during post-processing, you review the images and choose the one that is properly exposed.  Or if the scene is very high contrast, you can use photo editing software such as Lightroom or Photoshop to stitch several frames in your series together into an HDR image, which ensures good exposure from the brightest to the darkest tones in your photo.

Several exposures were shot using bracketing and then combined in Photoshop to create this HDR  image.  All tones from the darkest shadows on the mountain walls to the brightest highlights on the icebergs and lake are properly exposed in the final image.  Buy this photo

Have you used exposure bracketing techniques?  What are your best practices?  Do you use this process mostly for selecting the best exposure or for creating HDR images?  Please share your thoughts here.

Are you interested in learning new travel photography techniques?  Follow this link to see all the posts on techniques: http://www.to-travel-hopefully.com/category/techniques/.