I have been keen on trying double exposures or multiple exposures in camera for a while, but did not have the option on my camera. I recently discovered that there is a downloadable app for my camera (Sony A7ii)) from Sonys website Play Memories that allows double exposures in camera, so promptly downloaded it at a small cost of £3.99.
I was feeling quite excited at using this option because it would allow me to pull together two aspects that I love in one image - firstly getting my main macro subject mostly in focus ( By shooting at F11-18 and using good lighting) whilst adding the soap bubble bokeh ( from a Meyer Gorlitze primoplan lens) which is best achieved wide open at F1.9 with backlighting. The weather outside was murky, dull lighting with winds that would move my subject so I opted to attempt setting up on my dining table rather than in the garden.
There were several obstacles including having to create my own backgrounds, naturalish look, backlighting to produce the bokeh that I love from the Primoplan lens, then getting the two images to work well together. Plus working at macro photography meant having to be very precise. Then I got silly and decided to photograph a moving subject - my Orchid mantids on tiny spring flowers - giving myself an extra challenge - but then I do love a challenge and both mantids appeared content to explore or preen themselves. I like the option of using current spring blooms for this project with snowdrops, crocuses, mini daffodils and Grape Hyacinths all in bloom this last few weeks.
The image below has a very light bokeh and I found this was the result with many of my images - using the "screen" mode.
I did try a few options - using two Primoplan images, or combining one with either a 90mm macro lens shot or a Sigma 150mm macro capture. I was constantly forgetting to change my settings ( switch off flash between images and alter aperture as I was having a major brain fog day - but kept trying. It was also a good exercise in learning what distances are best in producing the specific bokeh from the Primoplan lens - often it is difficult to find the correct distances in that single image - so you can see why I was keen on double exposures to produce what I wanted.
The image below was from two Primoplan exposures, one of the snowdrop alone then another of some out of focus Hyacinths covered in water droplets, plus a few more images taken using this method.