Leaf bud

Technical: Canon EOS 7D, .3 sec, manual, f?, ISO 400, 50mm focal length, no flash

On the subject of image capture, size is a question. The image sent to me was 7.6 mb. There is a setting on DSLR cameras for RAW or large jpeg files. RAW files are larger than a jpeg capture. The data is like a film negative, which the digital camera computer processes into a jpeg file of smaller size. If you are satisfied to let the camera’s image processing software do it’s magic, then you get many more images on a memory card. Otherwise the RAW file takes up a lot of memory on the computer hard drive as well. There are many opinions about whether to shoot RAW files. There are advantages in post processing options such as tweaking color balance and salvaging information in underexposed areas.

With a large image capture file, you have another advantage – the ability to enlarge the image. In the second image I enlarged the image to show detail. There is no grain/noise to be seen. The fine detailed hairs are sharp.

The image was shot on a tripod. And here is an example advantage of stabilizing the camera. The finest details are preserved. Of course if there is a breeze and the plant is moving, detail would be lost on a long exposure. The rule for handheld image is 1/focal length. Therefore, if the focal length is 50 mm the longest handheld exposure would be 1/50. It’s just a guideline.

At ISO 400 this image shows hardly any grain or noise as it’s called these days. Noise is the consequence of being able to image in near darkness. The sensor gives up some detail in the capture. Looking at the plate there is hardly any noise in the black center. The detail holds at high magnification.

These are some of the choices to keep in mind when adjusting your settings.

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