October 21, 2014, 08:44:47 AM

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Topics - Eldar

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1
EOS Bodies - For Stills / How to differentiate crop vs. FF
« on: October 13, 2014, 08:45:58 AM »

I have been involved in a number of crop vs. FF discussions lately. I thought I had the arguments for and against well set. But, based on these discussions, I´m not so sure anymore.

What I´d like your views on are what you see as the key arguments for and against the two sensor formats are from your perspective.

PS! I know DR is one, but please avoid turning this into a for/against more DR thread.

2
Lighting / Recommendations for lighting system
« on: October 01, 2014, 08:57:43 AM »
I am sure there are a number of threads on this topic, so I appologize for not having done the search.

Very close to 100% of what I shoot is with natural/available light only. I am even a complete amateur with my 600 flash.

My company is now in need of some updated product images. These images range from small gadget like units, to several large screen control centers (airport tower solutions).

I just saw the offer from a pro and decided that this is something I want to give a go myself. So my question to those of you who know how to do this, is what kind of lighting system would you recommend? I have seen a couple of travel kits, with 3-4 strobes, umbrellas, transmitters etc. But I do not know if they are worth the money. An alternative could be remote controlled 600 flashes.

Any advice and/or recommentation will be moste appreciated.


3
EOS Bodies - For Stills / 5DIII focusing screen for manual focus
« on: September 29, 2014, 02:38:44 PM »
The 5DIII does not have exchangeable focusing screens supported from Canon. I have previously tried the Eg-S screen, made for 5DII and 6D, but that is not a mechanical fit. I found an instruction video on youtube, showing how to install it, but it did not work well over time. After a couple of weeks I got a focus offset (appeared as a +75 AFMA offset). Using AF still worked, but the visual appearance in the view finder, when the subject was in focus, was anything but in focus.

I have since only used my 1DX with the Ec-S screen for manual focus lenses. I hardly ever use a tripod, so I must be able to focus through the viewfinder. I am not able to focus with handheld live view.

A couple of weeks back I ordered a custom made S-type focusing screen for the 5DIII, from Focusing Screen in Taiwan (www.focusingscreen.com). It arrived today and I have installed it (only takes about 5 minutes) and played with it. Mechanically identical to the original and fit perfectly. Initial impression is very good. I have only used it indoors, in rather dim light, but my keeper rate (Otus 55mm @f1.4) is very high (still subjects) and equal to what I am able to get with the 1DX.

I have not done a very thorough testing of the need for exposure compensation. But as far as I can see from the images I have, there does not seem to be a need for any adjustments. But the viewer does get a bit darker, so it is best used with f2.8 or faster lenses. I tried the 600 f4L IS II, but (for dim indoor shots) then the viewer turned too dark. That was expected though.

So, for those of you who are happy with your 5DIII, but would like to also use manual focus lenses, this is clearly a good option.

4
This is just to open a thread for this lens.

I have read that Zeiss started shipping to dealers more than a week ago. Has anyone received a delivery confirmation yet?

5
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.)

6
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.

7
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.

8
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?

9
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.

10
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?

11
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.

12
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.

13
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!

15
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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