Yes you read the title of the blog correctly; there is a weakness with my GX1 and no doubt other Micro 4/3 cameras also. Take a look at the image above to see if you can spot it. I shot this yesterday in the Yorkshire Dales when out photographing waterfalls with a friend. The intention was to visit a few locations starting at Keld which has loads of falls and then work our way south visiting other falls on route. This is one of the best shots of the day with my GX1.
Now the eagle eyed amongst you will have noticed this photograph is not of a Waterfall and that’s because of the weakness I mentioned. I simply couldn’t slow the shutter speed sufficiently to emphasise the movement in the images. Let’s discuss an example.
There was quite a lot of water coming over the falls as it has been wet recently (I’m sure those of you based in the UK will know what I mean) so the speed of the water was quite fast. This is good news for me as it means the shutter speeds are not quite as slow as you might otherwise need. I still however needed to slow the camera down to between 0.3 and 0.8 seconds to create the desired effect.
The base ISO on the GX1 is 160 and there is no way (at least that I can find) to expand this down to perhaps 80 or even 50 (I hope Panasonic are listening because I’m sure they could do this with a firmware upgrade). At the same time I want to shoot with my lenses in their optimal range for sharpness of f/5.6 to f/7.1. When trying to do this however I was finding that even in relatively shaded areas I was just freezing the water.
I did try closing my aperture down to f/13.0 with a couple of ND filters on the front of the lens whilst holding a polarizer in front and it worked to some degree. It still wasn’t great and there was a reflection on the polariser that can be seen on some images.
My 5D MKII on the other hand was set to ISO50 with a lens at f/14.0 and a polarizing filter attached. This was giving me nice long exposures that I could control. Here is an example of one of the shots so at least you can see how nice the locations were.
I think therefore that I need to add a further accessory to the list of essentials for this camera and that is a variable ND screw in filter. Oh, and if you are wondering what the image at the top of the blog is, it’s the Ribblehead Viaduct which carries the rail line.