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<blockquote data-quote="IMB" data-source="post: 672414" data-attributes="member: 44926">Hi.&nbsp; New to the forum so firstly apologies if this ought have been in the Lens or Camera section.&nbsp; Truth is, I don't know the cause so not sure which it should be.I am a relative beginner who uses a Nikon D3300.&nbsp; Plan had always been to get to properly understand this for a couple of years before perhaps upgrading.&nbsp; Chance came to partly upgrade and as I prefer wildlife photography I took the opportunity to buy a better lens rather than body so bought the Nikkor 300mm F4/E.&nbsp; Delighted with this in most ways but I have a question regards the attached image.This is one of a series I recently took at Newport Wetlands using the D3300/lens combination.&nbsp; It was my first time using the lens and as you can see, there are rings appearing in the bokeh (water droplets).&nbsp; I understand that the shape is due to the camera construction and there is nothing I can do about this but the rings don't seem right.&nbsp; Is this usual or down to the 'Phase Fresnel' element (described as being like a lighthouse lens)? Is it perhaps because the camera sensor cannot cope?Help appreciated.</blockquote>

[QUOTE="IMB, post: 672414, member: 44926"] Hi. New to the forum so firstly apologies if this ought have been in the Lens or Camera section. Truth is, I don't know the cause so not sure which it should be. I am a relative beginner who uses a Nikon D3300. Plan had always been to get to properly understand this for a couple of years before perhaps upgrading. Chance came to partly upgrade and as I prefer wildlife photography I took the opportunity to buy a better lens rather than body so bought the Nikkor 300mm F4/E. Delighted with this in most ways but I have a question regards the attached image. This is one of a series I recently took at Newport Wetlands using the D3300/lens combination. It was my first time using the lens and as you can see, there are rings appearing in the bokeh (water droplets). I understand that the shape is due to the camera construction and there is nothing I can do about this but the rings don't seem right. Is this usual or down to the 'Phase Fresnel' element (described as being like a lighthouse lens)? Is it perhaps because the camera sensor cannot cope? Help appreciated. [/QUOTE]

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