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Thread: G1 kit lens entrance pupil

  1. #1
    Member sangio's Avatar
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    G1 kit lens entrance pupil

    Hi Folks;

    I've recently joined this forum because it seems much friendlier than some of the others. It also has a nice blend of gear talk and images.

    I just finished testing the G1 14-45 kit lens to find the entrance pupil at various focal lengths for pano stitching. Surprisingly, at least to me, is that the entrance pupil hardly moved at all between 14 and 35 mm FL. It stayed around 55 mm from the tripod socket. When zoomed out fully to 45 mm FL, it moved about 10 mm closer to the camera.

    I'm not sure these results are correct. By comparison, when I did this with the Sony R1 lens, I found a noticeable shift as the lens was zoomed, and ended up with 6 different settings between its 14.3 and 71.5 mm focal length.

    Has anyone calibrated their 14-45 lens for pano stitching? Any comments would be greatly appreciated.

    cheers
    Santo

  2. #2
    Super Duper
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    Re: G1 kit lens entrance pupil

    That's interesting. I can't help as I haven't tried panos yet, but want to. What bracket/pan head is that?

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    Senior Member kweide's Avatar
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    Re: G1 kit lens entrance pupil

    Until now i made all nearly all my pano without panohead or bracket. So where is this from...i think i need one of that...
    Anyone out for Nodal Point Infotable for all Zuiko glasses ???

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    Member sangio's Avatar
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    Re: G1 kit lens entrance pupil

    Hi folks:

    That pano head is a Nodal Ninja 3 MkII. I've been very happy with this purchase.

    Here's a link to their main website....

    http://www.nodalninja.com/index.html

    I bought the NN 3 kit from the Canadian reseller for 320 CDN$, about 200 Euros. They have several resellers in Europe and the US.

    Panoramic photography is VERY addictive. I've attached one of the first panos I made with the G1. The original stitched image has a horizontal field of view of about 200 degress, and is 4000 x 13,000 pixels in size. It was made from 8 vertical captures with the kit lens at 14 mm focal length.

    Unfortunately, downsizing it to 900 pixels wide really messes it up, but it will give you an idea of what the original looks like.

    regards
    Santo

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    Senior Member kweide's Avatar
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    Re: G1 kit lens entrance pupil

    Thanx a lot. Just found a dealer in Germany, Berlin.....fine.

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    Re: G1 kit lens entrance pupil

    At one time I considered the Nodal Ninja but ended up with an RRS package (I've been unable to find it on their site right now), but it works well with the 5D, but I've been doing flat stitch panos with a TS lens. Guess I'll have to go back to the rail--which necessitates finding the nodal (actually entrance pupil) point and going from there.

    Diane

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    Senior Member m3photo's Avatar
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    Re: Nodal point

    Quote Originally Posted by Diane B View Post
    ... ended up with an RRS package (I've been unable to find it on their site right now), but it works well with the 5D, but I've been doing flat stitch panos with a TS lens.
    I have the same set-up from RRS (by the way, anyone want an L-bracket for a 5D?) and the tutorials are very good - Nodal point?
    Here you go:
    http://reallyrightstuff.com/pano/05.html

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    Member sangio's Avatar
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    Re: G1 kit lens entrance pupil

    Quote Originally Posted by Diane B View Post
    At one time I considered the Nodal Ninja but ended up with an RRS package (I've been unable to find it on their site right now), but it works well with the 5D, but I've been doing flat stitch panos with a TS lens. Guess I'll have to go back to the rail--which necessitates finding the nodal (actually entrance pupil) point and going from there.

    Diane
    I looked at the RRS setup as well. Their products are very well engineered and fabricated. It looks a bit sturdier than the NN. In the end, I went with the NN 3 because it's much smaller and lighter, only 474 grams, about 1 lb. It's always in my camera bag.

    regards
    Santo

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    Super Duper
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    Re: G1 kit lens entrance pupil

    For either the RRS, or the NN, what would be a good tripod? I'd be using the lightweight G1.

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    Re: G1 kit lens entrance pupil

    I won't recommend a tripod--I could use a lighter one, but I'll live with what I use for now. I do like my Markins ballhead but using it necessitates more time leveling. I don't have the full pano (with pano base, etc.) but use the MPR Precision Plus package http://reallyrightstuff.com/pano/03.html which is nice for multiple shots for macro also. I haven't done panos with this setup for awhile--been using a TS lens/flat stitch with a 5D, but think I'll refresh my knowledge and try some with the G1. I notice that you can use the G1 vertically with the NN--with the setup I have, I can't without an L bracket for the G1 (or not easily). I wonder if anyone will ever make an L for the G1--I really do like them for tripod work.

    Diane

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    Re: G1 kit lens entrance pupil

    Quote Originally Posted by monza View Post
    For either the RRS, or the NN, what would be a good tripod? I'd be using the lightweight G1.
    I'm using a Velbon 535 CF tripod with good results. It weighs less than 3 lb including a Manfrotto ballhead. Velbon have a full range of CF tripods.

    http://www.velbon.co.uk/newvelbon/pa...ocftrpods.html

    The folks at Fanotec, the Nodal Ninja people, seem to like the Slik Sprint Pro, but I don't have any experience with it.

    And if you have the budget, you can't go wrong with a Gitzo tripod.

    regards
    Santo

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    Member sangio's Avatar
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    Re: G1 kit lens entrance pupil

    Quote Originally Posted by Diane B View Post
    I won't recommend a tripod--I could use a lighter one, but I'll live with what I use for now. I do like my Markins ballhead but using it necessitates more time leveling. I don't have the full pano (with pano base, etc.) but use the MPR Precision Plus package http://reallyrightstuff.com/pano/03.html which is nice for multiple shots for macro also. I haven't done panos with this setup for awhile--been using a TS lens/flat stitch with a 5D, but think I'll refresh my knowledge and try some with the G1. I notice that you can use the G1 vertically with the NN--with the setup I have, I can't without an L bracket for the G1 (or not easily). I wonder if anyone will ever make an L for the G1--I really do like them for tripod work.

    Diane
    Hi Diane:

    I agree, an L bracket would be very convenient for tripod work. I haven't been able to find a custom L bracket for the G1, I think it's too new. I've seen some generic brackets at RRS and Kirk that might work.
    However, looking at the camera, I think an L bracket would prevent you from opening the LCD fully, so I probably won't be getting one.

    regards
    Santo

  13. #13
    CharlieH
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    Re: G1 kit lens entrance pupil

    I wonder how many people are familiar with gigapan. They have come out with a robotic camera mount for panoramas called the Epic. $379. Here's a link: http://www.gigapansystems.com/

    Also look at some of their online panos, like Obama's Inaugural. 1767 images, 1.47 gigapixels. Click on a few of the snapshots below the pano.

    http://gigapan.org/viewGigapan.php?id=15374

    ch

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    Re: G1 kit lens entrance pupil

    Charlie,
    I was looking at that gigapan setup earlier in the week. I was wondering if anyone has tried it. Perhaps I will post in the gear section to get a broader audience.

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    Re: G1 kit lens entrance pupil

    Quote Originally Posted by sangio View Post
    Hi Diane:

    I've seen some generic brackets at RRS and Kirk that might work.
    However, looking at the camera, I think an L bracket would prevent you from opening the LCD fully, so I probably won't be getting one.

    regards
    Santo
    I suspect you are right. I looked at it carefully and its unlikely that anyone is going to make an L for it. I found one of my flat plates--an almost 'just right' Wimberley plate I use with it--I have to carry an Allen wrench because it just slightly overlaps the battery door, but otherwise its good.

    Diaine

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