Saturday, May 4, 2024
Wednesday, April 17, 2024
Spring garden butterflies
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Brimstone butterfly, Gonepteryx rhamni |
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Comma butterfly, Polygonia c-album |
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Peacock butterfly, Aglais io |
Monday, January 15, 2024
High Res Shooting with the EM1 Mkii
The Olympus EM1 Mkii offers a high resolution mode, activated from the shooting modes button on the left side of the top plate. Although not as sophisticated as with more recent models it offers the opportunity to produce 50MP JPEGs or an 80MP ORF (RAW) file by compositing a series of pixel shifted images in camera.
Frankly, I haven't found much use for it. For the system to work without horrible artifacts creeping in from subject movement between the image frames the camera has to be securely tripod mounted and the subject(s) to be absolutely still. Achieving that outdoors in the windy environment of South West England is, to say the least, problematic.
Witness this shot of snowdrops at The Garden House. This the 80MP version. Resized for this blog post it looks fine:
But look closer at 100% and the problems start to show:
Tuesday, December 26, 2023
Pro Capture on the Olympus EM1 MkII
I've owned the EM1 MkII for about 18 months and I'm still exploring all the features of this camera. One feature that I've only briefly played with and really need to explore further is Pro Capture.
Essentially, the camera can be set up to buffer a series of shots on a continuous loop when the shutter button is half pressed. Firing the shutter then writes the shots both prior to and after firing. The number of shots pre and post press, maximum frames per second (60max), and the frame count limiter (25 max) are set up in the C1 | H settings | Pro cap options in the Custom (*) menu. There are plenty of 'how to set it up' videos on YouTube so I won't look at it in more detail. It's the results that count.
Effectively it overcomes some of the limitions of human reaction time. It's so easy to miss a shot that requires split second reactions to capture. The sparrow coming in to land on our back garden feeder is an excellent example, Using Pro Capture I was able to sit in comfort with the 40-150mm Pro set at f2.8 and camera at ISO 1000. As soon as I saw the bird coming in to land I started the Pro Capture loop and pressed the shutter as it landed, capturing enough buffered shots to give me a few reasonable in flight images.
It works for take off shots as well. This is an Azure damselfly, Coenagrion puella, taking off from a waterside leaf.
All I had to do was focus on the resting damselfly, start the Pro Capture buffer loop and, as soon as I saw movement, fully press the shutter.
It all sounds easy, and, judging by the number of superb in flight and fast action shots using Pro Capture with this and later cameras in the EM1/OM1 line, it's definitely simplifying the generation of impressive results.
Of course there are downsides. It's battery hungry. I'll need to get another one or even two batteries if I'm going to use it more extensively next year. It also generates a lot of files. Even with the restricted buffer storage of 25 images per Pro Capture run it's very easy to generate hundreds of files in a short space of time. Add in the ability to capture in RAW and card space can become an issue. It also takes goodly amounts of time to go through the resulting files to pick out the best and delete the rest (trust me, you don't want hundreds of almost identical shots sitting on your hard disks).
But it's fun - and that's what really matters.
Wednesday, December 6, 2023
Thoughts on the Olympus EM1 mkII and 40-150mm f2.8 Pro
By the standards of too many YouTube photographers and critics this combination of an old M43 camera (December 2016) and even older Olympus Pro lens (2014) should long ago have been discarded on the scrap heap in favour of newer and better equipment. Surely only the latest and best is good enough for professional quality work?
Well no. For my stock and other photography I don't need super high resolution, incredible high ISO ability or the smaller depth of field of a full frame body and expensive, larger aperture lens. The 16 and 20Mp sensors of my two Olympus bodies, together with the f2.8 constant aperture of the 12-40mm and 40-150mm Pro and 60mm macro lenses are more than enough for my needs, and, more importantly, the needs of Alamy's client base.
Of all the gear the EM1 mkII and 40-150mm f2.8 Pro has definitely become a favourite. Consider the following image:
It's actually two shots from a sequence, merged as a panorama in Lightroom, and chosen to show both the tuck and extension phases of the double suspension gallop of my daughter's deerhound / greyhound cross. Sampson (the dog) was at full speed, around 40mph, on a local field. I was panning at 142mm, ISO 800, f3.2, 1/2000 sec and using the continuous autofocus of the sequential high shooting mode. There is a little motion blur around the limbs - I could have gone down to f2.8 - but it doesn't detract from the fact that the extremely fast and accurate autofocus, large aperture 40-150 lens, and high speed shooting ability of the EM1 MkII body enabled me to get a sequence of sharp shots of a very fast dog.
Consider another image:
This is a Silver washed fritillary butterfly, taken at 150mm, f6.3, ISO 800. 1/2500 sec, using the close focusing ability of the 40-150 to fill the frame with the butterfly and the Inula flower head it was nectaring on. Plenty of separation from the background with this shot, something it's often claimed you can't get with m43 gear.
Of course it's possible to get even better separation and even closer focusing with the addition of the tiny 1.4x teleconverter. Consider this marbled white butterfly shot:
f4 at 1/8000 sec and 210mm. Wide open at maximum reach with a teleconverter, ideal conditions for a soft photo. Here's a 100% crop:
The addition of the teleconverter even gets me into small bird territory. Here's a nuthatch at Stover Park in Devon
Of course my primary need is for my plant and garden photography. Shots that I would previously have taken with the 180mm macro now come into the province of the 40-150mm Whether individual plant portraits....