December 19, 2014, 01:31:50 PM

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Messages - digital paradise

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1
EOS Bodies - For Stills / Re: Canon 7D MKII -- Love the low noise!
« on: December 01, 2014, 12:57:57 PM »
It is pretty good. 12,800






2
EOS Bodies / Re: 7D II owners, did you need to AFMA your camera?
« on: December 01, 2014, 12:52:46 AM »
Yes. Far too much for out of the box. I sent mine to Canon for warranty service.   

3
EOS Bodies / Re: Focus problems with the Canon 7DII?
« on: November 30, 2014, 09:20:43 AM »
I'm trying to understand this graph. It is showing all 4 lenses need to be set from -10 to +10?     

No, I just arbitrarily set to W = -10 and T = +10, and moved the zoom ring from the wide to the tele end in small increments taking a shot each time.  I then looked at the recorded EXIF for each shot, which shows the focal length and the AMFA applied to each image, and plotted those values for each lens (each point is an image).  The point was to test how the camera determines the AFMA value to use for focal lengths between the extreme ends of a zoom lens.  It seemed logical that it would be a simple linear regression, but I wanted to confirm that empirically (unlikely, but maybe it would use the W value from the wide end to the midpoint of the zoom, then the T value from the midpoint to the long end, for example).  I chose four lenses ranging from a 2x zoom (16-35) to an 11x zoom (28-300).

Practically, when I do AFMA on zoom lenses, I do both ends and some intermediate focal lengths.  For 2-3x zooms (16-35, 70-200), I test one or two intermediate FL (e.g. 16-24-35 and 70-135-200 for those lenses, or 24-35-50-70 for a 24-70).  For 4x zooms, I test two intermediate FLs (e.g. 24-50-85-105 or 100-200-300-400.  You have to draw the line somewhere, so for the 28-300L I tested 28-50-100-200-300.  Basically, I want to know that when I set W and T values, the intermediate FLs fall on that regression line.  For example, my 24-70/2.8L II needs W = 0 and T = +5, and FoCal indicated +1 for 35mm and +3 for 50mm, which fall right on the regression line.  If the lens had needed 0 at 35mm and +1 at 50mm, for example, then shots at intermediate FLs would not have the right AFMA and would be out of focus...and in that case, I'd have returned the lens for another copy and tried again.

Hope that makes sense, but let me know if it doesn't!

Nope that makes sense. Thanks

4
EOS Bodies / Re: Focus problems with the Canon 7DII?
« on: November 30, 2014, 12:35:18 AM »
Quick question. Using dot tune method I have the tamron 150-600 set to +3 on the wide end and -2 on the long end. A quick test showed it is definitely front focusing at 250. Are the micro adjustments linear along the zoom range. In other words the adjustment range is 5 over the focal length so is it safe to assume it has moved from +3 at 150 to about +2 at 250. I have it pushed up to +6 on the wide end now and have taken more shots.  Trying to figure out which direction to work on regarding the adjustments.

It's a simple linear regression between the W and T values.  Here are my confirmatory data, tested with 4 different lenses set to W = -10 and T = +10:



FWIW, I've found 'dot tune' to be somewhat unreliable.

I'm trying to understand this graph. It is showing all 4 lenses need to be set from -10 to +10?       

5
When I had to I shot my 7D at 12,800. 7D2 is better. It won't touch my 5D3 but I would have never expected it to. Comparing apples to oranges. For critical stuff I used to limit myself to 1600 using my 7D. With the 7D2 an comfortable  3200 or 6400 in a pinch.     

7D2 @ 12,800. Opened in DPP and transferred to PS. NR in auto using DPP. This is from 2 weeks ago.   


   
Now that adobe has released LR and ACR updates I can use the masking slider in the sharpening tab to further tame any existing noise.

My old 7D @ 12,800. NR using ACR.



 

6
EOS Bodies / Re: Canon 7D Mark II Owners first thoughts
« on: November 20, 2014, 10:14:33 AM »
What do you like?

1. The ability to program another button besides having to use the DOF button to toggle between One - Shot and AI Servo. How about a FW update for the 5D3 Canon?

2. The AF selection lever (outside the multi controller).

3. Not camera related but I did not have to restart my computer when I updated DPP 13.4 to DPP4. I thought it may have been a fluke but I updated from 4 to 4.1 and no restart. It is about time Canon. Thanks             

What do you dislike?

Although far better I still have to the DOF button to toggle between One - Shot and AI Servo. It would be nice just to press and release and it stays in the opposite drive. An indicator in the VF would top it off. All of course programmable. 

7
This one's "official"; blue painters tape works, too.

You should go into business and sell those. Designer colours, etc.

8
Sekonic does not play nice with Canon RT so I carry my STE3 around with me when I shoot in M. I use it to fire the flashes by pressing the test button. I can shut the other flashes off and work at one at a time at each location.

I cut up one of the mini stands, used a BR connector and Optech strap. I tried a generic mini stand but it was hard to lock and I did not want to damage the rubber. I just purchased a replacement stand from Canon.


9

I am convinced Canon would gain a lot by also introducing not only a sensibly-priced 430EX-RT but also a TX-RT transceiver that would allow to also include 580EX II / 430 EX II (possibly also mk 1) speedlites in a radio wireless setup. Ideally also select studio strobes where makers cooperate with Canon. Use of other third party ettl speedlites could be inhibited via some chip in such a canon RT transceiver.


I'm not sure about that one. Going backwards. RT is the future and besides as business I would not want to sell my customers something so they can keep using older technology. I would want to sell them new toys. Just look at the computer and cell phone industry.     

10
I guess I'm getting mixed vibes at other sites. Mostly POTN and DPreview. People don't want to pay Canon prices. There was quite a long thread at POTN when YN RT was announced. Lot people of waited for the YNE3 release. I read the AF assist is sketchy on cameras like the 5D3 and I don't miss second curtain sync. Very happy with the Canon product.           

11
If you are right you will make a lot of people happy. Personally if I am going to go off camera flash I go big or go home :D  I have 3 600's and the STE3. Love it.

12
To the Av vs Tv comments. I prefer to use Av for sports and birding, if I'm not shooting in M. I prefer to control my DOF and keep an eye on the shutter speed rather than the other way around. Both accomplish the same thing, just a preference.


13
I voted keep the 600, no 430 update. Unless Canon goes to RT in the body you need another flash or the STE3 to make RT worth it. If you are going off camera then you are looking at modifiers down the road that require more power. I think serious off camera shooters will want more power. YN will not come not come out with a smaller version of the 600 clone (whenever it comes out) just because it will be reasonably priced and there will be competition from others one day. Besides if Canon comes out with a 430 RT why would people buy it when they can get a YN 600 for the same price.

I think Canon will keep the 430 non RT for you basic single flash on camera photog. They may update it to make it sound more fancy. Heck they may even just drop that line one day which would make the 320 the basic intro flash. I could be wrong but YN came out with their own transmitter within 2 years of Canon's STE3 which is ½ the price. As a business you have to think about R&D and manufacturing change costs vs return on investment. I'd focus on pricing current RT products more competitively. They are going to feel it when YN comes out with the RT flash. Others like Godox are around the corner.                 

14
I listen to the beep and have activated the red light/s on the focus points. I will turn off the beep at a wedding and put my 5D3 to silent shooting mode.

I know both my 7D and 5D3 have several programmable button options, I just can't figure out why Canon makes us hold them. Even provide the option for one or the other. Not hard with todays tech.             

15
Software & Accessories / Re: updating to Maverick 10.9?
« on: March 06, 2014, 12:35:17 AM »
I have noticed the oddest thing. After updating to Mavericks the clock is about 3 minutes faster after about a week. When I open date and time preferences it re-sets itself. I am running 10.9.2

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