We are a group of photography enthusiasts who are passionate about anything of photography, in particulary, water drop photography, high speed photography, and macro photography.

Our passion about photography does not stop at photographying the world, we are actively inventing, building tools to further ultilize modern technologies to explore and advance photographical techniques.

Focus stacking is a powerful method to extend depth of field by taking a series of images at different focal plane and use computer software to pick the sharpest part of each image for the final result. One way to acquire such series of images is by moving the camera towards or away from the subject (or by moving subject towards or away from the camera) so that different part of the subject will be in focus in each image. Then by applying computer algorithm, these images will be combined into one sharp image.

In order to move the camera (or the subject for that matter) and automate the process of image captures, an automated rail system is preferred method. However, current products on the market are extremely expensive and many macro photographers have to do it manually which is a tedious work to do. Besides expensive rail system, good stacking software are either expensive (but really good) or difficult to use (though free).

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It is amazing what difference tube lenses make

Here are two pictures of same ant specimen (purchased online), first one is using Raynox DCR-150 as tube lens and second one is using a 70-300mm telephoto lens as tube lens. The Raynox is clearly out performing the telephoto lens.

Both were shot with the same PLAN 4x 0.1NA microscope objective and were set to about the same magnification. NO sharpening done in software, only cropping and contrast adjustment.

Not sure about color saturation difference because the Raynox is on a Canon 550D and the telephoto one is done with Nikon D5200, but as far as sharpness is concerned, Raynox is the winner.