P7700: the ribbed lens ring - what is it about?

Started Oct 5, 2012 | Questions
tomjar
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P7700: the ribbed lens ring - what is it about?
Oct 5, 2012

I am seriously considering P7700 to replace my Canon A650IS as a take-everywhere camera (D5000 is my regular camera) and I cannot find any info regarding the "ribbed" thingie surrounding the lens on P7700. Does it serve any purpose or is it there just for the looks? I know it is not a focus ring. I checked the manual which mentions a "lens ring" which is to be removed before attaching step-up rings, but that's all. I am not even sure it is the same thing - impossible to tell from the picture.

So, does anybody know what it is? Thanks.

ANSWER:
Nikon Coolpix P7700 Sony SLT-A65
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mallbuedel
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Re: P7700: the ribbed lens ring - what is it about?
In reply to tomjar, Oct 5, 2012

The ribbed ring covers a thread (male) where extension tubes with a female thread for wide angle or tele lenses can be screwed on.

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tomjar
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Thanks, that's great! (nt)
In reply to mallbuedel, Oct 5, 2012

nt

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mallbuedel
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Re: Thanks, that's great! (nt)
In reply to tomjar, Oct 5, 2012

It's a good replacement for the bajonet of the P700/7100, the latter having too much backlash at my P7100.

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tomjar
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Re: Thanks, that's great! (nt)
In reply to mallbuedel, Oct 5, 2012

mallbuedel wrote:

It's a good replacement for the bajonet of the P700/7100, the latter having too much backlash at my P7100.

I will certainly try to see if it can be coupled with the 2x teleconverter that I used with A650.

Have you noticed any serious issues with chromatic abberrations on P7700 or anything else with the IQ?

Specifications-wise this camera looks just great to me. I cannot compare it directly with my A650, but based on samples that I have seen online I am guessing it is about 2 stops better in high-ISO performance. Coupled with the 1 stop faster lens this should really make a difference in low light performance. I am hardly waiting for the local dealer to get hold of it so I can try it out on my own. Should be next week...

kind regards

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SamD
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Re: P7700: the ribbed lens ring - what is it about?
In reply to mallbuedel, Nov 19, 2012

mallbuedel wrote:

The ribbed ring covers a thread (male) where extension tubes with a female thread for wide angle or tele lenses can be screwed on.

I guess this is about 57 mm thread. Has anyone figured out how this thread can be used?

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Rivertay
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Re: P7700: the ribbed lens ring - what is it about?
In reply to SamD, Dec 10, 2012

Does anyone know the exact  size of this ring. I am desperate to try out an extension tube but none of my step up/step down rings fit it.

Thanks

Rick

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Is it better to capture the moment imperfectly than not to capture it all? Hope so because most of mine are imperfect!! http://www.flickr.com/photos/rivertay/

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mallbuedel
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Re: P7700: the ribbed lens ring - what is it about?
In reply to Rivertay, Dec 10, 2012

Rivertay wrote:

Does anyone know the exact size of this ring. I am desperate to try out an extension tube but none of my step up/step down rings fit it.

Thanks

Rick

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Is it better to capture the moment imperfectly than not to capture it all? Hope so because most of mine are imperfect!! http://www.flickr.com/photos/rivertay/

As far as I remember it's a 58 mm male, but you better ask Bem Herrmann (http://www.dpreview.com/members/1640406435) to confirm it.

Karl

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tomjar
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ca. 56.5 mm
In reply to mallbuedel, Dec 10, 2012

mallbuedel wrote:

Rivertay wrote:

Does anyone know the exact size of this ring. I am desperate to try out an extension tube but none of my step up/step down rings fit it.

Thanks

Rick

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Is it better to capture the moment imperfectly than not to capture it all? Hope so because most of mine are imperfect!! http://www.flickr.com/photos/rivertay/

As far as I remember it's a 58 mm male, but you better ask Bem Herrmann (http://www.dpreview.com/members/1640406435) to confirm it.

Karl

It is actually about 56.5 mm, it is not a standard thread size.

T.

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Rivertay
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Re: ca. 56.5 mm
In reply to tomjar, Dec 10, 2012

Thanks for the information. Does anyone know where I can buy a step up set that includes 56.5mm?

Thanks

Rick

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Is it better to capture the moment imperfectly than not to capture it all? Hope so because most of mine are imperfect!! http://www.flickr.com/photos/rivertay/

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tomjar
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Re: ca. 56.5 mm
In reply to Rivertay, Dec 11, 2012

Rivertay wrote:

Thanks for the information. Does anyone know where I can buy a step up set that includes 56.5mm?

Thanks

Rick

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Is it better to capture the moment imperfectly than not to capture it all? Hope so because most of mine are imperfect!! http://www.flickr.com/photos/rivertay/

56.5 mm sits right in the middle between two standard thread sizes - 55 and 58 mm. It seems they did it on purpose (to actually prevent use of converters etc. perhaps?). I am not aware of any extension tubes or step-up rings of this size.

I did try holding a Canon 2x tele converter (attached to the extension tube for Canon A650IS) to the front of P7700. The extension tube was just long enough so that the front of P7700 lens did not touch the rear element of the converter when fully extended. I was holding everything in my hands so the whole setup was not exactly stable. But the camera was able to focus at full tele (meaning 400 mm focal distance equivalent). The image was not ideally sharp though (slightly blurry). However, I think it might work if the correct distance between the P7700 lens and the converter was found, but I am not sure.

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tomjar
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Great find, thanks! (nt)
In reply to mallbuedel, Dec 11, 2012

no text

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Rivertay
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Re: ca. 56.5 mm
In reply to mallbuedel, Dec 13, 2012

Fabulous find thanks for sharing

Rick

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Is it better to capture the moment imperfectly than not to capture it all? Hope so because most of mine are imperfect!! http://www.flickr.com/photos/rivertay/

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