August 27, 2014, 09:27:40 PM

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Topics - Eldar

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Since Dustin published a review for this fantastic lens, http://dustinabbott.net/2014/07/zeiss-apo-sonnar-t-2135mm-ze-review-2/ (well worth reading), I thought it deserved a thread.

I am currently on vacation, so the only image I had on my MacBook was of the local lion (the first image I shot with the lens), but to kick it off.

5DIII, 1/640s, f2.0 ISO100 (handheld and focused with standard focusing screen)

(I´ll see if I have something more relevant when I get home.)

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EOS Bodies / Canon 6D N
« on: July 11, 2014, 08:01:45 AM »
Has anyone seen this body before? It is a 6D, stripped of wifi and GPS. Price is 30% less than a regular 6D. On offer in Norway today.

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Third Party Lenses (Sigma, Tamron, etc.) / Zeiss Distagon 15mm f2.8
« on: July 01, 2014, 01:30:45 PM »
I believe this lens deserves a thread of its own. By far the best UWA lens I have ever used.

This is Aldeyjarfoss on Iceland. One of the most spectacular falls I have seen. Look at the formations in the rock. That tells the story of a dramatic creation of an island.

5DIII, 1/500s, f5.6, ISO200, with circular polarizing filter.

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Third Party Manufacturers / Sigma USB Dock does not work
« on: May 02, 2014, 09:21:02 AM »
I just got the Sigma dock for my 35 and 50 Art lenses. With the 50 everything works just fine. But with the 35 it does not work as it should.

I start the software, connect the lens to the dock, the software appears as it should and recognizes the lens with serial no. and firmware version. But one difference from the 50mm is that it does not read the lens settings at the beginning and in the service menu, I can only use Firmware Update. The Customization menu is inactive.

I confirm Firmware Update in the popup window (I have v1.00 and the new is v1.01). It loads the new firmware and tells me that Firmware update is complete You can disconnect the lens.

The problem is that I still have v1.00 and the Customization part of the Service Menu is still unavailable.

Does anyone have any experience with this? Is there anything I can do or is it Sigma Service next?

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Third Party Manufacturers / Zeiss Otus 55/1.4 vs. Sigma 50/1.4 Art
« on: April 29, 2014, 04:10:14 AM »
This thread shall be fully focused around comparing all aspects around these two lenses.

Rules:
1: All posted images must have a shot from each lens
2: All shots must be equally framed, e.g. tripod required
    (The 50mm - 55mm difference must be accepted)
3: All image pairs must be given the same post processing, preferably as little as possible, to make
    sure we don't mask out or increase artifacts
4: All comments and posts must be referring to the images, observed phenomena within the images
    and theortical and practical arguments to explain these
5: All images must be accompanied with body, lens, shutter speed, f-stop and ISO information

Both lense have their individual threads, so please keep this thread dedicated to posting and discussing the images and the specific similarities and differences between these two lenses. The other stuff belong elsewhere.

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Speedlites, Printers, Accessories / Thunderbolt memory card reader
« on: April 28, 2014, 01:56:35 PM »
Does anyone have experience with any of the thunderbolt memory card readers?

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Lenses / Bokeh onion rings
« on: April 14, 2014, 02:46:43 AM »
The Zeiss Otus 55 f1.4 is a phenomenal lens, but it has been criticized for having onion ring bokeh. I have numerous examples of this, some posted over at this thread:

http://www.canonrumors.com/forum/index.php?topic=18169.msg387033#new

Attached are 4 examples. The first one has AC light bulbs. The second one is candle lights. The third is Christmas tree lights and reflections from the decorations on the tree and the fourth is a DC lightbulb.

As you can see, the first and third have the rings, the other two does not. I do not understand why this happens, but it seems to be related to AC light vs. natural or DC light.

I have tried this with numerous lenses (Otus, Sigma 35/1.4A, 85/1.2L II, 24-70/2.8L II) with the same result. The sharper the lens, the more obvious it becomes. So to me it seems that this phenomena has its cause outside of the lens.

Can someone please explain what this is.

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Lighting / Flash bracket for use with 600mm f4L IS II
« on: April 09, 2014, 03:41:18 AM »
I have been in a couple of situations where I would have liked to have a flash with my 600. I have looked at a variety of alternatives, but it is not easy to decide what the better solution is. So, since there are lots of experienced 600mm shooters on this forum, I´m asking your for advice. Which flash brackets do you have/recommend?

I have RRS L-brackets for my cameras and plates/feet for my lenses.

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Abstract / High resolution Moon image
« on: March 20, 2014, 05:33:31 PM »
Here is something extraordinary for the pixel peepers:
http://lroc.sese.asu.edu/gigapan/
867 giga pixles!

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EOS Bodies / Anything to report from the Olympics?
« on: February 17, 2014, 04:32:48 AM »
It may be that I have missed something, but I am surprised that we have not seen any info or spy images of new bodies and/or lenses from the Olympics. If we are to expect any interesting bodies from 7DII and above, during this year, I would have expected them to be field tested in Russia.


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EOS Bodies - For Stills / 1DX focusing screens
« on: February 06, 2014, 03:22:43 AM »
I have been searching the web for some more indepth views on alternative focusing screens for the 1DX. Manual focus with fast primes wide open is quite challenging with the standard screen. I thought the Ec-S screen would be the best choice, but then someone whispered Ec-A and Ec-B. Noen of them seem to be supported by Canon. They are fairly cheap, so one option would be to buy them all and try them out, but I would like to qualify the options first.

How much better are they for manual focus, compared to standard screen with focus indicators?

To make it practical, I need to use this focusing screen also with other lenses, like the 600 f4L with 1.4xIII extender, so AF speed and viewfinder brightness are issues of interest.

Does anyone have any experience with either of these, or know of any good papers on the topic?

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Lenses / Canon FD 150-600mm F5.6 'L' PL Mount
« on: January 29, 2014, 09:09:48 AM »
I found this add today for a lens you don´t see every day:
(It´s in rather poor Norwegian, but the seller seem to be English)

http://www.finn.no/finn/torget/annonse?finnkode=46412958&searchQuery=canon

For anyone with an interest:

Here is the official line on the lens.
http://www.mir.com.my/rb/photography/companies/canon/fdresources/fdlenses/fdzooms/150600.htm

Focal length: 150-600mm
Aperture ratio: 1:5.6
Lens Construction: 15 groups with 19 elements
(including 8 UD glass elements)
Coating: S.S.C. (super spectra coating)
Angles of view: Diagonal: 16 20' - 4 10' Vertical: 9 10'ñ2 20'
Horizontal: 18 40' - 3 30'
Distance scale: (m) 3 (Magnification 0.07 x at 150mm. 0.26x at 600mm) to 100.OO (ft);
Focusing mechanism: Rotation of knob
Zooming: Sliding of knob, mechanical compensation system
Minimum aperture: f/32. A
Diaphragm: Automatic
Filter type: Rear section biterholder, drop in type (with 34 mm exclusive filter Regular 1X)
Hood: Built-in type
Cap: Exclusive (CF2-0716)
Function: Auto Aperture, Full aperture metering (AE operation when used with ALL Canon automatic SLR cameras.
Length x max. diameter: 468mm x 128mm
Weight: 4,260g.

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Third Party Manufacturers / Polarizing filter for Zeiss 15mm f2.8
« on: January 16, 2014, 08:26:44 AM »
I'm going to buy a 95mm circular polarizing filter for my Zeiss Distagon 15mm f2.8. The only one I know will work is the Zeiss. But $509 (B&H) is stiff enough to look for alternaitves.

Has anyone experience with any of the other suppliers on that specific lens?

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Canon General / Canon outperforms Japanese peers in patents, again
« on: January 15, 2014, 09:04:36 AM »
To those who are worried that Canon has stopped being innovative;

Canon has ranked amongst the top 5 patent holders in the US for more than 25 years. In 2013 Canon ranked as No.3 over all, with a total of 3.825 patents, which is an all time high. Canon has been the highest ranked Japanese company for the last 9 years.

http://www.canonwatch.com/canon-top-japanese-company-usa-patent-ranking-9th-year/#more-18388

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