micro four thirds – Photo rumblings and whispers

Notes on OM System OM-1 digital camera (DRAFT)

Pedro J. Aphalo 2022-12-30 2023-01-08Equipment, Photography, Techniques 0

Quite a lot has been already written in the internet about the OM System’s OM-1 camera, but I write down here some notes comparing it to the E-M1 Mk II and highlighting some use cases. I share this notes in case someone else finds them useful, although they are mostly intended for myself. Among the things frequently mentioned is a lack of improvement in image quality between old and new image sensors (e.g., OM system OM-1 vs OM-5 – The 10 Main Differences). This is one example of where my own experience differs drastically from the quick and dirty tests…

Hemispherical time-lapse under a tree

Pedro J. Aphalo 2020-09-29 2020-09-29Landscape, Plants, Techniques 0

In two earlier posts titled “Lens adapter with filter drawer” and “Lens adapters: flange-to-flange distance” I discussed how crucial it is to achieve the exact effective flange-to-flange distance when dealing with adapted objectives with a very short focal distance. I also described how I shimmed an adapter to achieve this. Recently I had an opportunity to use the Sigma 4.5mm 1:2.8 circular fisheye objective in Nikon AF mount adapted to my Olympus E-M1 Mk II camera to create a time-lapse video. I captured 500 images, with a pause of 1 s between them. Total time was a bit over 10…

Lens adapters: flange-to-flange distance

Pedro J. Aphalo 2020-06-30 2022-12-12Equipment, Photography 0

Today I received a “K&F Canon EOS-M4/3 PRO” adapter (bought from https://www.kentfaith.com/). This is a new design advertised as being of high precision. I was specially interested as this is one of the very few or maybe the only series of relatively low cost adapters with a non-reflective black interior finish. This is is important to prevent reflections that otherwise degrade image contrast or create flare and ghost images. Please see Black anodised aluminium in IR and Commlite products: how I wasted my money.

Lens adapter with filter drawer

Pedro J. Aphalo 2020-06-17 2020-07-11Equipment, Photography, Techniques 0

I here describe my experience with the DEO-TECH OWL EF/MFT lens adapter. The adapter is available mainly through astronomy web stores and seems to be currently distributed by Optolong. It is also available on special order at B&H photo video and possibly other large shops. Development of the adapter was initially funded through Kickstart crowd funding.

Digital UVA-photography with M43 equipment

Pedro J. Aphalo 2019-07-14 2019-07-14Equipment, Photography, Techniques 0

How far can we go, with off-the-shelf equipment One question which I have been pondering for some time is: do I need to have a digital camera converted to full-spectrum for UVA photography? and are there any modern objectives that are good accidental UVA-objectives? This is not a question of cost alone. Although a converted camera can be used for VIS photography, obtaining good colour reproduction requires effort. A suitable filter is used on the objective to replace the one removed from the image sensor unit during conversion. As it is not possible to find a perfect match to the…