My Focus stacking journey
I have always been drawn to extreme macro photography images, revelling in their fantastic intricate details and the ability to view magnified subjects that we cant truly appreciate by eye at life size. Things like a butterflies wing, the eye of a bee or fly, the refraction of a flower within a water droplet, a snowflake. I also love to see the world from different points of view - getting down low amongst foliage to capture mushrooms, insects, flowers and a more recent interest - slime moulds. I enjoy experimenting with a wide variety of techniques from using vintage lenses like Helios and Meyer Gorlitz Primoplan, filters such as Lensbaby Omni filters or crystals, sparkling fibres, shooting through items like gauze - the list is endless. I always try all techniques in macro and close up and I focus stacking macro/extreme macro has been on my to do list for ages.
One of my first ever stacked images - taken March 2009 - droplets on a peacock feather using a Canon 300D and Canon 60mm lens
Below is a handheld stack of about ten images obtained using a Sony A7ii plus Sony 90mm macro lens plus 32mm extension tubes plus Raynox 250. Jan 2021
The last time I tried focus stacking macro images must be about 10 years and I didn't exactly make a proper informed effort. Since then it has been something I have fancied trying but never got around to, partly because I did not have the equipment ( macro rail) nor a camera that takes focus shift images to stack. More recently my partner turned to focus stacking macro images and is building up his equipment and set ups. So I ended up borrowing one of his macro rails which allows me to take images by altering the focal plane by the turn of a dial. I don't have a camera that takes multiple images focus shifted so it was a case of getting everything set up with camera on a mini table top, sturdy tripod, ensuring my subject was placed well and would not move at all, attaching my shutter release cable to avoid any movement then taking the individual images - turning the dial on the macro rail a fraction, waiting a few seconds to ensure no movement, pressing shutter, then repeating until the whole subject was photographed.
Below is one of my stacked images from 2012 - I manually stacked these myself in photoshop.
Focusing is key here, I had to use manual focus and took advantage of my cameras peak focusing feature so I could see which areas where in focus using my live view. But despite the painstakingly slow and careful procedure I found I was still getting the tiniest movement from adjusting the macro rail - whether this was due to my tripod as well I am unsure. So on stacking my images in Helicon software there were just too many errors/blurred sections. I found this whole method just was not precise enough with both the distance between each image and with the movement due to my set up. After numerous attempts I found I just was not getting the results I wanted. I did also try the handheld stacking method of setting my camera on high speed burst as I slowly rocked forward - this gave some reasonable results for larger macro subjects when a smaller aperture was used.
Below is an image of a Parrot waxcap mushroom - about 2 inches tall, I took just 10 images and stacked them in Helicon, with a fair bit of fixing in photoshop.
These Tulip stamens were taken with Sony A7ii plus 90mm macro lens plus 20+12 macro extension tubes, plus a Raynox 250. Each image is created by stacks of 36 or 38 images stacked in Helicon. I was using a manual focus rail here and there were a few gaps, artifacts and blurred areas that I needed to correct in photoshop, despite trying different settings with the three different rendering methods in Helicon. I was reasonably pleased with one of them but still found that the detail and accuracy was lacking - I want to produce really fine detail. Lighting wise I was using my 2 Studio lights with various diffusers/softbox/white brolly and a speedlight with a mag mod sphere to diffuse.
In the meantime my partner was constructing his own set up with a better macro rail which he attached to a piece of a heavy wooden block to help it stay stable, this kept his camera absolutely still. He also purchased a little microscope stand which adjusts height with the tiniest fraction with the turn of a wheel and gave it a diy platform for his subjects to sit on - this came with two tiny lights attached to bendy arms. Michael owns a Z6 which can be set to take up to 300 images using a focus shift system, moving the focus a miniscule amount between each one - all easily set up with just a few clicks. He purchased a few tiny continuous lights from IKEA at just £2 each, on bendy arms, allowing flexibility - these just plug into our phone charger. With a little ingenuity, a few pieces of paper, and polystyrene cups the light can be diffused. Michael was getting some fantastic results so I asked him to teach me how to use his camera and set up - he has a few different options with lenses, reversing lenses, extension tubes, Raynox filter and another super macro lens - a Componon S50mm 2,8 which he uses reversed coupled with a 70-300 lens or macro lens . Images below show my partners set ups and equipment that I borrowed ( just quick phone snaps to give an idea)
It only took a couple of attempts using Michaels kits to get the hang of it, and whilst using the tiny continuous lights works, it does not give the effects that I can obtain using multiple of camera flashes so this is an avenue I want to explore with Michaels equipment. I know I can get my studio lights and our various speedlights working with his camera, however Michael found that they only fired three times when he attempted using them with his focus stacking set up - so we need to get this working, with intervals allowing flash and triggers to recharge - although I am unsure how they will cope with 300 shots! But this is my aim lighting wise.
Above is a Tulip stamen only my 3rd attempt using Michaels camera and focus shift option, a stack of 300 images taken with my partners Z6 plus 105 macro lens, extension tubes and Raynox filter - I probably only needed about 180 images. I placed a miniature daffodil about an inch or two behind the stamen to get the lovely glowing yellows. I used F8 to get the best sharpness from the lens, which gave enough detail to aid stacking whilst still giving a blurred out of focus backdrop. Stacked in Helicon, then minimal cleaning up in photoshop.
Below is a photo of a Scarab beetle approximately 1cm across. It is a stack of 380 images stacked in Helicon. F8, ISO 400, shutter 1/5. Nikon Z6 plus 105 macro lens and extension tubes ( 29mm) plus Raynox 250 filter.
I pretty happy with the two results above, the level of detail obtained using this equipment is phenomenal. I need to learn how to get the best out of Helicon by experimenting with the 3 rendering options and altering smoothing/radius, plus I need to work on correcting and fringeing and artifacts that are produced. I may try a trial of Zerene stacking software to see how effective it is and if it produces any less fringeing etc. The option of using Michaels equipment has allowed me to improve on any results that I have been able to produce previously and I feel like I am getting closer to producing the image quality that I am after. My next steps are to practice and to work on lighting and improve in editing.
Below is the eye of a Preying mantis ( I keep them as pets and this one died of old age last year - I kept it to photograph) Unfortunately my stack stopped after 80 images so it is incomplete and something I need to retry. Equipment used is Nikon Z6 plus extension tubes, a 70-300 lens plus a reversed Componon S 50mm lens as close as I could get. Definately room for improvement, not concentrating on composition, simply practicing getting extreme macro.
