How can I identify the sharpest photo in a burst or sequence?
Asked 6/4/2013
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I have a batch of very similar images where slight camera shake means some frames are sharper than others. Is there software that can automatically help identify the sharpest image in the sequence, or at least speed up the review process? The images are of the same subject and are very similar, but framing may shift slightly because of the shake.
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
13y ago
2 Answers
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This may not be a very elegant solution, it's more of a hack, but I once read a tip about searching for the sharpest picture out of a stack: look for the heavier files! I've used this method several times, and it works.
From a technical standpoint, this makes sense because the JPEG algorithm will compress your RAW files a lot more when you take blurry shots; less details means more even/flat areas, which requires less disk space to store.
Try ordering your pictures by file size, and you'll often see your blurriest shots have the lowest file size. Beware though, the shots with large out-of-focus area -bokeh- will also be smaller in size. So, you should only compare file sizes for pictures that are very similar (exact or very close composition/angle/focal length).
Originally by user6284. Source · Licensed CC BY-SA 4.0
user6284
13y ago
0
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Yes—if the images are very similar, there are a few practical ways to narrow down the sharpest frame.
Capture One Pro has a Focus Mask feature that analyzes each image and highlights the sharpest areas, which can help you quickly compare frames in a burst. Kuuvik Capture has also been mentioned as offering a similar focus-peaking style aid.
A simple workaround for JPEGs is to sort by file size: blurrier images often compress more efficiently, so they may have smaller file sizes than sharper ones. This only works reliably when the photos are nearly identical in composition, exposure, and subject matter. It can be misleading if one image has more smooth out-of-focus background or noticeably different framing.
So, for best results, use a focus-analysis tool in software such as Capture One, and treat file-size sorting only as a rough first-pass filter for very similar shots.
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