ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

More on Achieving Perfect Focus with Your Camera

Updated on August 16, 2015

Reduce Blur, Increase Focus

Recently I wrote an article about achieving focus with your digital camera. In that article I discussed how to reduce blur, improve your focus and sharpen your shots to be as crisp as possible. All in all I brain stormed 25 tips to make improvements. I gave you the first 11 previously and here are the rest.


  • Learn how to use the focus points when you are using autofocus on your camera. Commonly there are 9 focus points or more indicated in the viewfinder. These points can be used all together or individually. Check your owner’s manual on changing this setting. If doing portrait photography use only the point that will go over your subject’s eye.
  • When buying a new lens you usually have a short time to test it out for a full refund. Taking test shots of printed objects like a barcode and then looking at them on the computer screen can tell you if your new lens is sharp out of the box or you need to get a replacement. (It happens more often than you think.)
  • Micro-focus is available on many higher end DLSRs. This is because not every copy of a lens can focus perfectly. Even 0.001 mm difference in the lens to the sensor (although minor) can be detected.
  • Where possible the plane of the sensor should be parallel to the subject. The further off of parallel the greater likelihood of part of the photograph being out of focus.
  • As your lens ages there may be some minor looseness develop. When using auto focus the abrupt stop of the lens motor may be slightly off. To correct this try partially depress the shutter 2 times to try to get the last little bit of focus.
  • When using the viewing screen on the back of your camera enlarge the critical area to 10 power to get the focus as perfect as possible.
  • Many photographers add a UV filter on the front of their lenses. This serves to protect the lens but has an effect image quality Where image quality is of utmost concern take the UV filter off the lens.

  • Aperture also makes a difference on sharpness of an image. Most lenses are their sharpest at f8-f11 and soften at either end of the f-stop range.
  • If sharpness is critical change the picture style settings in camera to increase sharpness.
  • Use mirror lock up to reduce vibration in a DLSR. The longer the lens the more important. This turns the shutter operation into a 2 click process. The first time the shutter button is depressed the mirror raises and the second time the shutter button is operated the shutter opens and closes.
  • If you can turn the lights up on a low light subject your camera will have a better chance of achieving focus. Automatic focus uses contrast to get it right. More light equals more contrast.
  • A perfectly focussed photograph can still lack sharpness. Many DSLRs do not sharpen adequately in camera. In post processing use the sharpness slider in Adobe Lightroom to see if the sharpness can be improved.
  • In Photoshop you can use the unsharp mask to improve sharpness
  • If needed you can use the high pass filter in Photoshop as an overlay to increase sharpness as well.
  • If you are absolutely stuck with a slightly blurry photograph that needs to be improved you can take out and replace some of blurry pixels. For instance if there is a blending of red to black replace some of the most noticeable blurry pixels with either red or black to increase the contrast and abruptness of the edge. You will need to be at high magnification in Photoshop and have a lot of patience to do this. A complex photograph will be impossible to do.

Conclusion

While blur( the movement of the camera or subject during exposure), focus (the dialing in of the lens) and sharpness(the contrast of pixels) are three separate subject they are often mixed together to give you great or poor results. So here are all of the points to improving your final product. Obviously some of these points need further explanation or study on your part. High pass filter sharpening is an art more than science. It deserves a full blog post on its own (maybe next?) Most of these points however will become second nature to you as you gain more experience with your camera. Now just get out there and shoot.

Comments

    0 of 8192 characters used
    Post Comment

    No comments yet.

    working

    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://hubpages.com/privacy-policy#gdpr

    Show Details
    Necessary
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
    Features
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Marketing
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Statistics
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)