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John Vine
John Vine's picture
Last seen: 2 hours 51 min ago
Joined: 17/04/2014

What are the dimensions of your bonnet aperture?  Can you take a side-on pic?  To fill mine, I think the 150mm filter (C604D) would have to be a good deal fatter than my C603D:


I'd also be a bit concerned that the extra exposed filter at the front would suffer significant abrasion from the air stream..


MTW's picture
Last seen: 1 hour 8 min ago
Joined: 20/12/2021

Just got some pictures of the filters together , you can see the difference is pretty big. The 150mm bulges out much more in every direction, which is why I think it fills the bonnet cut better!

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