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Thread: samyang 7,5 m.m. specifications

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DennisS

Posts: 1787
Location: Los Anglels, United States
Registered: 1 Sep 2007
Re: samyang 7,5 m.m. specifications
Posted: 16 Sep 2011 at 22:33 GMT
Since the camera will be used mainly in portrate mode, would it not be better to rotate the lens 90 degrees so the sun shade will have a chance of doing something other than holding the lens cap on?

As for the two small screws, I would just file off the heads, remove the razor blade, then finish filing the screws down. I would assume any warrantee would be voided once you drill holes. What harm could a little more filing do?
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Hans Nyberg

Posts: 2874
Location: Denmark
Registered: 28 Aug 2005
Re: samyang 7,5 m.m. specifications
Posted: 16 Sep 2011 at 22:57 GMT

DennisS said:

Since the camera will be used mainly in portrate mode, would it not be better to rotate the lens 90 degrees so the sun shade will have a chance of doing something other than holding the lens cap on?


Dennis
You need to turn your brain 90 degrees.

Hans
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DennisS

Posts: 1787
Location: Los Anglels, United States
Registered: 1 Sep 2007
Re: samyang 7,5 m.m. specifications
Posted: 16 Sep 2011 at 23:24 GMT
Hans,

As usual, you give such a helpful reply to one of my questions. Please keep up the good work.

Dennis
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Qwerty

Posts: 13
Location: Canada
Registered: 7 Feb 2011
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 0:17 GMT
Thats a great job on the lens, looks like a natural fit. I bet you Samyang engineers will be studying your post for their promised NEX version.
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Hans Nyberg

Posts: 2874
Location: Denmark
Registered: 28 Aug 2005
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 0:32 GMT

DennisS said:

Hans,

As usual, you give such a helpful reply to one of my questions. Please keep up the good work.

Dennis


Dennis

If you do some simple brain work you will understand how stupid your question is.

Just a little help for old brains.
Image shows lens with shades on the long side.
Now turn it 90 degrees and what do you see in the image.

Hans
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DemonDuck

Posts: 418
Location:
Registered: 10 Mar 2011
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 1:21 GMT

DennisS said:

Since the camera will be used mainly in portrate mode, would it not be better to rotate the lens 90 degrees so the sun shade will have a chance of doing something other than holding the lens cap on?


The long side needed to have the shade shaved to let the lens fill more of the sensor. The short side is already clipped by the sensor so the remaining shade won't clip.

I think...
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DennisS

Posts: 1787
Location: Los Anglels, United States
Registered: 1 Sep 2007
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 1:53 GMT
If you do some simple brain work you will understand how stupid your question is.

Hans,

Who died and made you king? There is no such thing as stupid questions, only stupid answers.


DD,

Thanks for the very helpful response. I can now see that the lens shade can remain on the sides. Nice to see we can have a civil exchange of questions and ideas without judgment.

Dennis
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Germain

Posts: 3
Location: Marignane, France
Registered: 17 Sep 2011
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 2:24 GMT
Thank you for your's advices! smile
I've took off the inside rings and now my Sam-Nex works very good. www.spheerique.com/galerie/samyang-nex-%207.5
Where is the NPP you've found?
Did Someone used a ring diy or commercial?
Thank you !
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DemonDuck

Posts: 418
Location:
Registered: 10 Mar 2011
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 4:02 GMT

DennisS said:

DD,

Thanks for the very helpful response. I can now see that the lens shade can remain on the sides.
Dennis


Actually I think I said it backwards but I think you got the idea.
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thomash2

Posts: 154
Location: Germany
Registered: 19 Dec 2009
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 7:51 GMT
could someone send me the NPP measured from the edge of the adjustment ring near the camera side?

Thanks
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Smooth

Posts: 4310
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 8:54 GMT

Germain said:

Did Someone used a ring diy or commercial?
Thank you !
The ring is commercial from ebay sellers. Mine came from
www.ebay.com.au/itm/Micro-4-3-M43-Sony-Nex-Adapto...
But if you look to Page 4 of this thread you will find where others purchased theirs.

Regards, Smooth cool
www.omnipix.com.au
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Smooth

Posts: 4310
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 9:08 GMT

thomash2 said:

could someone send me the NPP measured from the edge of the adjustment ring near the camera side?
Thomas, it is hard to offer an exact measurement and understand that with a fisheye lens the NPP is a floating point anyway. What I can tell you is that my measurement done with a steel rule and wobbly hand shows the NPP to be 11.7mm ahead of the red ring or 1mm behind the front focus ring edge (this is "F" on your scale). I will contact you via email when I get home after tonights meeting.

Regards, Smooth cool
www.omnipix.com.au
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Germain

Posts: 3
Location: Marignane, France
Registered: 17 Sep 2011
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 16:19 GMT
updated: 17 Sep 2011 at 16:20 GMT
Germain said:
Did Someone used a ring diy or commercial?
Thank you !

The ring is commercial from ebay sellers. Mine came from
www.ebay.com.au/itm/Micro-4-3-M43-Sony-Nex-Adapto...
But if you look to Page 4 of this thread you will find where others purchased theirs.

Regards, Smooth cool
-----------------
NO no no, i've got the adaptor 4/3 nex, and i want to get a ring like this for the 7.5 : store.nodalninja.com/categories/Ultimate-R1-and-R...
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Smooth

Posts: 4310
Location: Mount Panorama, Australia
Registered: 21 Jul 2004
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 17:07 GMT

Germain said:

NO no no, i've got the adaptor 4/3 nex, and i want to get a ring like this for the 7.5 : store.nodalninja.com/categories/Ultimate-R1-and-R...
Oh OK, you want a panohead lens ring. So far this doesn't exist. Maybe Nick is going to make one for his Nodal Ninja range? So far we haven't heard anything about this. I used mine on a NN3 MKII.

Regards, Smooth cool
www.omnipix.com.au
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DennisS

Posts: 1787
Location: Los Anglels, United States
Registered: 1 Sep 2007
Re: samyang 7,5 m.m. specifications
Posted: 17 Sep 2011 at 17:59 GMT
I have had discussions with Nick about a couple of designs. When my lens finally decides to show up, I will be making a couple of them. This project is on Nick's "to do" list. No estimation of delivery time.
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