December 20, 2014, 11:43:04 AM

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Messages - privatebydesign

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451
EOS Bodies - For Stills / Re: Posting about sensors and DR!
« on: September 24, 2014, 01:03:45 AM »
DR is overrated.

Until you need it. Then it tends to be the only thing that matters. :P

And when, pray tell, would it matter more than focus?

452
I am doing more and more work that I would rather use the 90TS-E for, but I am going to stick with my 100 L Macro until it gets the MkII rework, not fussed abut the IQ as the current isn't far off, much more concerned about the shift and tilt rotations, I will not buy one until I can control those like the 17 and 24 MkII.

So you would rather have no shifts and tilts than have them but not be able to easily move the shift and tilt access into parallel.

FWIW, it is possible to take apart both the 45 and 90, make the tilt and shift parallel then reassemble them that way. I did it once with each of mine, then put them back into their original configuration after a little while and left them that way.

Yes I would. For what I am doing shift is the most important, and that is easily emulated at the product level. Tilt is less useful for the commercial side of what I need the lens for but having used the 17 as much as I do I know I will use tilt a lot when I get it.

I know you can change the orientation of the current 45 and 90, but only to the two angles, inline or at 90ยบ, I want the capabilities the 17 and 24 MkII have to orientate in any combination giving me a much more functionally useful mini field camera. Until then I can live without the current 90 TS-E.

453
EOS Bodies / Re: Am I the only one excited about the new 7D mk2?
« on: September 23, 2014, 08:42:06 PM »
Incidentally, what difference does USB 3 make to anything?

It can make a very big difference if you want to use tethering of any kind. I don't know if Canon's done it, but with USB 3 you can get a higher resolution video feed for live view off the camera more quickly. With USB 2, I get maybe 23fps at best for tethered live view, which is pretty crappy. With USB 3, you could get the same live view feed at a higher FPS. It would be nice, someday, to get a full 4k live view feed off of a camera when doing tethered shooting. That's one of the biggest benefits for using a DSLR for astrophotography, live view focusing is really freakin awesome, and something astro CCD cameras do not have.

It would also be nice to have a 4k live view feed when using a tablet with a DSLR for landscape photography.

I don't think any of that is possible yet with Canon DSLRs...maybe a higher live view feed, but not sure about the 4k live view feed. It;s possible such a thing could be done via a firmware update or maybe ML in the future though...assuming USB 3 is included on the camera.

Doesn't that work via the 5D MkIII HDMI connection?

I tether a lot and haven't found a stills limitation to USB 2, Ethernet, or WFT's, but I don't do video so maybe I am being shortsighted.

454
I am doing more and more work that I would rather use the 90TS-E for, but I am going to stick with my 100 L Macro until it gets the MkII rework, not fussed abut the IQ as the current isn't far off, much more concerned about the shift and tilt rotations, I will not buy one until I can control those like the 17 and 24 MkII.

455
EOS Bodies / Re: Am I the only one excited about the new 7D mk2?
« on: September 23, 2014, 01:58:12 PM »

So, looking at my choices, I basically want the 5D4 for less than $2k  :P


And I want a 1DX MkII for less than $4,000 and a 1Ds MkIII replacement for less the $5,000 too, guess what, it ain't gonna happen.

Incidentally, what difference does USB 3 make to anything?

Look around all you want, you will find the high end DSLR crop camera market wanting, if you have decent lens requirements your choices are the 7D MkII and the 5 year old Nikon D300s, which is basically the 7 year old D300, and if you are a gambler this weeks Sony offering, but it probably won't be supported next week.

If you truthfully want a serious IQ kick then same generation FF gives it to you, but at a price, if you can't or don't want to afford the price then you have to make a compromise.

456
EOS Bodies / Re: Just for Jrista: 2014 Market Data
« on: September 23, 2014, 12:43:17 PM »

That doesn't match my experience with actual photos.  It's not just what is "user-selectable" but what photos I can use with those settings.  When talking about actual usable photos, I've seen approximately one stop gain with each generation of camera.  The 5D2 gave me one stop over the 5D.  The 5D3 gave me one stop over the 5D2.  So that's two stops gain in going from the 5D to the 5D3.  The 6D gives me just a little more than the 5D3. 

Well that is where you are going wrong zlatko, we don't allow actual empirical results to affect our opinions here, we have sensor readings and maths to tell us better what we should be able to see. /sarcasm

457
Thanks privatebydesign - I was actually effectively eliminating reach by pairing the 7DII with a 1.4x (rather than a 2x on the 5DIII) though this would still give me 70mm more on the 7D. In this instance is it possible IQ may be comparable between 5DIII+300II+2xIII vs 7DII+300II+1.4xIII?

I would say the differences will be so nuanced in that specific scenario anybody stating one over the other would only be guessing, especially as there aren't any 7D MkII's out there in retail customers hands yet.

When I investigated the same question for the 7D and 1Ds MkIII era cameras and 300 f2.8 IS MkI, I tested them and concluded the 7D didn't give me anything extra so didn't buy one. But this latest iteration of the question will need to be tested by you for your personal use and opinion. What killed my interest in the 7D was the comparative noise, even at base iso, but for others that wasn't as important.

I'd suggest renting and testing when they are available, or buy from somebody with a very generous return policy to give you the opportunity to draw your own conclusions.

458
EOS Bodies / Re: Am I the only one excited about the new 7D mk2?
« on: September 23, 2014, 11:29:05 AM »

Actually the 70-200 IS II focuses faster than the 300 IS II. And I can not notice any focusing slowdown on the 300 IS II even with 2x converter. The 70-200 however is slooooow with the 2x. This is my experience with both 5DIII and 1DX, the 1DX is slightly faster with both lenses.

Do you have any actual evidence of that or just an empirical feeling? For many years Canon touted their 300 f2.8's as the "fastest focusing af slr's".

I have evidence in that I just recorded it at 50FPS and it takes the 70-200 36frames to go from infinity to MFD and back to infinity compared to 39 for the 300 IS II. So the difference was less than I expected from my memory but it is still there.

That is interesting, thanks.

459
The 300mm f2.8 II and 2xIII is just about the only combination I would say maintains enough IQ for it to be a wash IQ wise. I'd recommend you make a purchase decision not on "reach capabilities, though the 7D MkII and 300mm f2.8 II and 2xIII should be very good, but on the other differences already mentioned, framerate, viewfinder view, size, weight, cost etc etc.

460
Total simpleton here that has tried gamely to follow the logic of this thread. I accept the circa 20% difference but can someone put this in laymans terms for me....I currently have a 5DIII with 300mm and 2x converter. However, with a 7D2 I could achieve slightly greater 'reach' with a 1.4x - in this instance would a 7D2 with 300mm and 1.4x be a better option than a 5dIII with 300mm and 2x converter? I am reach limited more often than not and I guess the other benefits of the 7D setup include higher FPS, lighter weight and faster aperture.


Hi krisbell,

Without knowing what 300 and TC's it is difficult to give an accurate answer. In general though the crop camera advantages are not in the "pixel on duck" meme, they are, as you say, framerate, viewfinder view, size, weight, cost etc etc.

461
EOS Bodies / Re: Just for Jrista: 2014 Market Data
« on: September 22, 2014, 09:30:14 PM »
I just want to see the full image, with faces blanked out if need be. I have some interesting images I'd share sometime, but this one is intriguing me.

462
EOS Bodies / Re: Am I the only one excited about the new 7D mk2?
« on: September 22, 2014, 04:45:36 PM »

Actually the 70-200 IS II focuses faster than the 300 IS II. And I can not notice any focusing slowdown on the 300 IS II even with 2x converter. The 70-200 however is slooooow with the 2x. This is my experience with both 5DIII and 1DX, the 1DX is slightly faster with both lenses.

Do you have any actual evidence of that or just an empirical feeling? For many years Canon touted their 300 f2.8's as the "fastest focusing af slr's".

463
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 04:33:45 PM »
Are you sure the pre-flash is disabled in M mode? When I have used speedlites with for example the Quadra, there's an option to ignore a certain number of pre flashes to make the speedlite and the Quadra sync properly. I had loads of tries where the flash would trigger the Quadra too soon, and had to find the number of preflashes so they wouldn't trigger the quadra, and the speedlite was never in ETTL, nor was it triggered by the ST-E3, but the Elinchrom Skyports.

Correct me if I'm wrong  :)

I am 100% certain that one on camera, or ETTL cord mounted, flash not set as a Master via flash menu or body menu does not emit a pre-flash. Any Canon flash used remotely set to M, not as a Master or Slave, just in M and triggered via third party triggers will not emit a pre-flash.

If your flash or body is set to have the on camera (or cord) flash act as a controller then it will emit a series of pre-flashes even in M.

I use PCB Einsteins with a 600EX-RT setup, I often use the 90EX as a dumb optical trigger for the Einsteins with it set to M and lowest power, there is no pre-flash, this is easily demonstrated by putting it in second curtain sync and a long exposure.

If I set the 600's to optical triggering, or even ETTL with the Radio, then I will get pre-flashes, if they are all set to M mode in Radio there are no pre-flashes.

In a mixed manufacturer flash setup RT and M still has no pre-flash.
On camera as a regular flash in M has no pre-flash.

In optical triggering mode Canon triggering always has a pre-flash, even in flash M mode, if your on camera or ETTL corded flash or body is set to controller mode it will pre-flash.

Lots of combinations but you can work with remote Canon flashes and not have pre-flashes.

464
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 04:14:44 PM »

The problem is that there's now way (that I know of) to find out what power level(s) ettl chose, there's no tag in the image file or log on the flashes... so quickly switching m <-> ettl is always tricky. Or are there any tricks available?

No there isn't, the ETTL power levels, and the algorithms that drive them, are proprietary. Maybe you should get ML to look into it  ;)

465
Lighting / Re: Basic help: How does Flash exposure compensation works
« on: September 22, 2014, 03:15:32 PM »
Automatic flash power might not be able to get the *minimal* flash output. If your subject is too near, and zooming the flash out, fanning and whatnot still over-flashes try to use m flash at min. power setting.

Just as an aside, ETTL can go much lower than min Manual flash output. Manual is limited to 1/64 in the case of the 90EX, or 1/128 flash power with other models, but ETTL can output less than that.

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