Thursday, July 1, 2021

A pot holder safety grip for big white lens

The pot holder modification for a big lens.

Below you see the 200mm Arca Swiss plate attached to the lens foot. This version of the 400 has a tripod collar that is one piece and therfore does not have longer aftermarket handles.

Looking down the barrel without the grip on.

I've put a 200mm length Arca Swiss adapter on my Canon 400mm DO f4 lens. Its shown here with the 2x extender mounted.   
This long Arca mount allows you to balance the lens when mounted on the gimbal mount I use. 
But what I found that when handholding the lens is the arca plate is not very  ergonomic. 
Slip a silicone pot handle holder over the plate, and its much more easy to grip.
There are less chances of the lens slipping from the fingers. The silicone sleve is very grippy on the inside and outside.
This enhancement is cheep and easy.
Order the flat grips here...Amazon
I got the 200mm Arca Swiss bar that just fits the grips as you can see. This one worked well...Amazon
You could use a shorter plate and cut the pot handler to length. For me the 200mm length just clears the lens.

Happy photography!

Saturday, July 4, 2020

Olympus OMD EM1 MK3 and Panasonic 100-400 for dragonfly photography.

Olympus OMD EM1 MK3 and Panasonic 100-400 for dragonfly photography

A sample image stack result

   I have been using the focus bracketing feature of the EM1 MK3 to photograph dragonflies with some good success. Here is what I have learned so far:

The lens
   The Panasonic 100 to 400 zoom lens is one fantastic lens for this task. Currently Olympus does not have a lens like this.  I started out with a fixed F7.1 aperture but have settled on using the variable aperture lens wide open. Depending on focal length the aperture changes on this lens. At 400mm (full frame effective 800mm) the lens is f6.3. Most images have been taken at 400mm as these skimmers are hard to get very close to. Using a largish aperture helps keep the background separate from the skimmer.

I am hand holding  the lens and using the lens anti shake, not the camera body image stabilization. This is working far better than the monopod I previously used with full frame. You can hunt and frame the little beasts much quicker hand held. I have made a larger handle grip for the lens to help holding  the lens steady. The lens IS is being used not the in body image stabilization (IBIS).

When using this lens on the Olympus body you cannot have the lens and body image stabilizations work together. This is a pity that Panasonic and Olympus don't 'cross' operate fully. Also the in camera focus stacking is not available. I don't find this an issue as I am using Photoshop to create the final merged image.

A high quality B&W polarizer is mounted on the lens to bring out colours and reduce reflections.

Camera Settings
   I set the number of images to bracket to 5 and the focus differential to 2 (low). This covers the body of the larger dragonflies I have been photographing.
I am using aperture priority set at f6.3  You could use f7.1 but I have found this not necessary.
I'm using auto ISO with the maximum set to 1600 ISO. The shutter speed varies with the light available.

   Use the smallest single focus point on the closest part of the dragonfly.  This could be a wing tip or a tail end for example. The focus bracketing will move forward from that point and should cover the entire skimmer. The new toggle dial on the MK3 really helps with changing the focus spot quickly.

 You will need to adjust the polarizing filter for vertical and horizontal orientations. The polarizer makes a significate difference in the final image.

The camera operates in high speed silent shutter mode when focus bracketing, and takes 5 images very quickly. You want the high speed shutter settings as fast as they can be set (60fps the camera default).

Image Processing
   I use Adobe Lightroom to process the images and then Photoshop to align and create the stacked and merged final image. More on this in a later blog post.

Friday, July 3, 2020

July 2020

Hello All!

I have retired and now have more time for travel and photography. The travel part is difficult right now due to Covid-19. I have been working on techniques for photographing dragonflies at a local watershed swamp.  
Here are some of the latest from the last month or so.

Sunday, February 24, 2019


The Chicago Bean
The River Walk

Brown Line

Sunday, June 24, 2018

Tuesday, March 20, 2018

March 11 at the Niagara Butterfly Conservatory

This shoot was done with the 40-150 Olympus zoom, 1.4 extender and an Olympus OMD M1 II. Great results with this kit.