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Big stopper query
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I recently got my big stopper and headed to Glendalough to capture it in all its glory. but I seem to have a horrid colour cast.
The first pic below was taken with the big stopper, and the second one was taken for comparison purposes, using the same settings but with a Lee grad instead. I used auto WB for both.
Ideas?
Hi – I’m not familiar with this model – but these would be my ‘tips’ when using a 10 stopper. I use the B+W screw on version – but the principles would be the same.
Always & without fail shoot in RAW / NEF.
Always – if possible – use ‘Live View’ and 10x magfification to get it pin sharp – if its on your camera.Frame and focus your shot (MF) manually – take a shot using evaluative/matrix metering and auto-white balance – note the shutter speed – then put on the filter. For landscapes i’d generally use f/8 to f/11 – but would go to f/22 if i wanted a really long exposure – but i’d be losing some shaprness. Depends on your lens and how good it is closed up. Depending on the available light you may or may not see the scene through the viewfinder – so its important then to pre-focus manually so the lens will not go ‘hunting’
Take your shot in bulb mode using a remote shutter…using the guide that came with the filter. Here is the one i use.
http://www.alexwisephotography.net/blog/wp-content/uploads/2010/02/BKS_ND_Chart.pdf
You may have to expose for slightly longer or shorter depending on the sun appearing and dissappearing.A remote shutter is essential – otherwise your stuck to a 30 sec exposure in manual mode. Cheap eBay shutter releases are just fine.
When you have a shot – set a custom white balance – based on this image only – then set your white balance to ‘custom’ immediately afterwards. Its a two step with Canon – maybe only a single step with Nikon’
Now your ready to take the shot again so you have no ‘warm cast’. If you have taken in RAW / NEF – you can use Adobe camera RAW in either Photoshop or Elements to fine tune the colour balance.
You can add additional filters (ND4 or ND8 etc) to get even longer exposures
Hope this helps,
bren
When you have a shot – set a custom white balance – based on this image only – then set your white balance to ‘custom’ immediately afterwards. Its a two step with Canon – maybe only a single step with Nikon’
It’s probably a WB issue, as you’ve said. I’ll play around with it, and let you know the result.
Thanks.
Btw, the pic I posted was of the Upper Lake, but I suppose you recognised it. :)i have much the same problem with my hitech 10 stop filter using canon 40d, i get a magenta colour cast, but easy to fix as long as you shot in raw, using either photoshop or lightroom using the the eye dropper colour picker select a pure white part of the photo and your done.
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