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Author Topic: Sigma DP3 Merrill Experiences  (Read 194436 times)

slowframe

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Re: Sigma DP3 Merrill Experiences
« Reply #300 on: October 19, 2013, 07:58:19 PM »

I've been enjoying the photos on this thread. I thought I ought to include one of my own.

« Last Edit: October 19, 2013, 08:40:53 PM by slowframe »
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Hulyss

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Re: Sigma DP3 Merrill Experiences
« Reply #301 on: October 20, 2013, 06:17:34 AM »

Always pleasing seeing new satisfied users :)

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billh

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Re: Sigma DP3 Merrill Experiences
« Reply #302 on: October 20, 2013, 07:31:33 AM »

Always pleasing seeing new satisfied users :)




Incredibly striking. what processing did you use the get the eye like this?

Thanks,

Bill
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Hulyss

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Re: Sigma DP3 Merrill Experiences
« Reply #303 on: October 20, 2013, 07:59:15 AM »

There is no processing this is the eye of a friend.
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TVGallant

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Re: Sigma DP3 Merrill Experiences
« Reply #304 on: October 20, 2013, 08:21:19 AM »

Using the values for the DP1 M and DP2 M ...

DP1M = 38
DP2M = 32.5

it appears the distance from center of mount screw hole to the back edge of the ribbed portion of the focus ring does equal the NPP (no-parallax point).  Therefore the back edge of the ribbed area becomes the point of pivot for panoramic imaging.    See attached image ...

I do not have the DP3M but suspect it may reflect the 37mm distance.
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palpman

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Re: Sigma DP3 Merrill Experiences
« Reply #305 on: October 23, 2013, 11:49:55 AM »

I really enjoy the film-like rendering of the Foveon:

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rljones

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Re: Sigma DP3 Merrill Experiences
« Reply #306 on: October 24, 2013, 09:41:41 AM »

I measured 'nodal point' while rotating camera with stopped down diaphragm and using a slit laser. For a stable laser across the diaphragm, I found these measurements, based from center of tripod mount:

DP1M = 38mm

DP2M = 32mm

DP3M = 36mm

I then CNC machined and powder-coated a mounting bracket using Front Panel Express. I can post of photo later. It works well with all 3 bodies.
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Ligament

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Re: Sigma DP3 Merrill Experiences
« Reply #307 on: October 24, 2013, 03:34:38 PM »

I measured 'nodal point' while rotating camera with stopped down diaphragm and using a slit laser. For a stable laser across the diaphragm, I found these measurements, based from center of tripod mount:

DP1M = 38mm

DP2M = 32mm

DP3M = 36mm

I then CNC machined and powder-coated a mounting bracket using Front Panel Express. I can post of photo later. It works well with all 3 bodies.

Would you mind explaining how you used the slit laser? is there a tutorial or video anywhere on this?

Also please post photos of the mounting bracket! I'll buy one if you are selling!
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NancyP

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Re: Sigma DP3 Merrill Experiences
« Reply #308 on: October 24, 2013, 07:56:59 PM »

I just do the usual empirical NPP determination of lining up a near and far vertical (usually my window frame and the highrise one block away). I got 32mm for the DP2M using this method. There are NPP tables for common lenses, but often you have to do your own determinations.
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Misirlou

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Re: Sigma DP3 Merrill Experiences
« Reply #309 on: October 25, 2013, 01:32:37 AM »

I recently used the bracket hiking around Lake Louise and the Burgess Shale; it was very convenient.

Ooh, there's a place I've wanted to see for a long time. Please share any Merrill shots that you can.
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palpman

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Re: Sigma DP3 Merrill Experiences
« Reply #310 on: October 27, 2013, 04:44:35 PM »

A bad photo:

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Bruce Cox

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Re: Sigma DP3 Merrill Experiences
« Reply #311 on: October 27, 2013, 07:29:36 PM »

This bracket needs a 3/4" shim, such as the cylinder under the acorn nut [which is where the camera goes], but can be effective.  It is seven dollars at McMaster-Carr, under modular furniture.  The holes are 5/16" and close enough to 38 mm on center that the play of quarter inch screws allow it to work for the DP1 and 3, if not the 2.
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allegretto

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Re: Sigma DP3 Merrill Experiences
« Reply #312 on: October 27, 2013, 11:46:42 PM »

absolutely no financial interest here, but this is my solution for a my MP-2M and 3M

http://reallyrightstuff.com/Items.aspx?code=NodalSlides&key=cat

I bought the 192 since the you can also rotate the clamp and use it as a bracket for any purpose.

Note the MPL's work too, and are a bit less, but you move the camera in one and the slide in the other. Also a level in the II
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Sauza

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Re: Sigma DP3 Merrill Experiences
« Reply #313 on: October 30, 2013, 04:58:11 PM »

Autumn in Weinstadt, Germany.


_SDI0480 by El Sauza, on Flickr


_SDI0487 by El Sauza, on Flickr
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NancyP

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Re: Sigma DP3 Merrill Experiences
« Reply #314 on: October 30, 2013, 05:05:26 PM »

Beautiful grapes. May they be put to good use soon  ;)
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narikin

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Re: Sigma DP3 Merrill Experiences
« Reply #315 on: October 31, 2013, 07:35:46 PM »

absolutely no financial interest here, but this is my solution for a my MP-2M and 3M

http://reallyrightstuff.com/Items.aspx?code=NodalSlides&key=cat

I bought the 192 since the you can also rotate the clamp and use it as a bracket for any purpose.

Note the MPL's work too, and are a bit less, but you move the camera in one and the slide in the other. Also a level in the II

sorry - there's 3 RRS '192 packages' on the page you link to - which one did you buy/recommend?
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narikin

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Re: Sigma DP3 Merrill Experiences
« Reply #316 on: October 31, 2013, 07:46:58 PM »

next public release of rawdigger (www.rawdigger.com) will support Merrill's raw files, so you can see raw histogramm for the current generations of Sigma cameras and see how your metering + exposure compensation corresponds w/ raw channels saturation.


any estimation of when this is coming?  I'm kind of exhausted wrestling with Sigma DPP.

whoops - I see it is now supported!  Any experience if its an improvement on DPP anyone?
« Last Edit: October 31, 2013, 07:49:54 PM by narikin »
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allegretto

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Re: Sigma DP3 Merrill Experiences
« Reply #317 on: November 01, 2013, 10:20:52 PM »

sorry - there's 3 RRS '192 packages' on the page you link to - which one did you buy/recommend?


sorry, copied wrong address... "Precision Plus 192"

http://reallyrightstuff.com/ProductDesc.aspx?code=192-PPP&type=4&eq=192-PPP-002&desc=192-Precision-Plus-Package&key=ait
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MrSmith27

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Re: Sigma DP3 Merrill Experiences
« Reply #318 on: November 05, 2013, 03:17:39 PM »


Incredibly striking. what processing did you use the get the eye like this?

Thanks,

Bill

I've had the same question before so I looked a bit in possible workflows. This one here seems to work for me:

1. Take out Sigma DP3M.
2. Focus on eye under good lightning conditions.
3. Press shutter.
4. Done.




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billh

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Re: Sigma DP3 Merrill’s sensor and lens performance (DP3 MTF)
« Reply #319 on: November 20, 2013, 07:37:49 PM »

Sigma DP3 Merrill’s sensor and lens performance (DP3 MTF)

This site has a variety of DP3M images which show detail when the cursor is moved over the image,

http://sigma-rumors.com/articles/sigma-dp3-merrill-review/sigma-dp3-merrill-sensor-lens-performance/
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