EOS 70D Images Surface Early

ahab1372 said:
that1guyy said:
tron said:
Dylan777 said:
neuroanatomist said:
19 AF points and a D-pad. To whomever said it would need a joystick, sorry...told ya! :P

Joystick will be in 7D II with 1D X or 5D III 61points AF system - 10fps ;D
Now, that was the worst thing to say. Everyone will wait for that camera and will not buy 70D at all ;D ;D ;D

Not "everyone" has over $2000 to spend on cameras. And it most likely won't have the tilt screen which is a deal breaker.
Not "everyone" needs or wants a tilt screen :-)

With new video feature - why not tilt screen ;D
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Flash Photography Tutorial # 3 - First and Second Curtain Sync

fstoparmy said:
Hey everyone.
Back for another install of the flash tutorials I have been doing. This time, i cover 1st and 2nd curtain shutter sync and where / when you would use each. I have also included some sample pics this time aswell :)
Hope you all enjoy :)
Much luv goes out to everyone on the CR forums
http://youtu.be/wENZLHRkazA

Nice videos, and just liked your page on FB. Looking forward to more.

G
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Clarification....Fine Art

.
I don't know if it's improved my comprehension of the fine art concept, but this made for a great Sunday morning read. It's not every day I find cogent and erudite writing, especially on a topic like this. Notapro and Hillsilly, I really enjoy what you've said here.

Recently I've been exploring this more than ever before. A few months ago I walked into a "fine art" photo gallery in a fashionable (people living in the area can afford to buy what they're selling) neighborhood of Philadelphia. Three pictures got my attention.

Famous Alabama artist William Christenberry had a spot. Three of his pictures hung side-by-side as a single work. It was three pictures of a rural roadway corner taken years apart. Interesting to see the change in the landscape over time, but I don't get any great art message from it. If you ask me what human significance it had, I couldn't begin to even imagine. I did however, appreciate it as a depiction of time passing.

The next picture I don't recall the artist. It was a picture of a person holding a fish. I kept looking at it and thinking I'd love to have someone explain to me how this is art. But then, I think there must be people who look at Van Gogh's stuff and wonder the same thing. I'm content at this point to think this question is a beginning to acquisition of knowledge.

The third picture riveted me. I think the title is "Oranges," and it's by Jessica Todd Harper. Apparently, it's the anchor of her book, Interior Exposure, and it can be seen here:

http://www.jessicatoddharper.com/#s=0&mi=2&pt=1&pi=10000&p=0&a=0&at=0

There's an almost frightening intimacy to that and other pictures in the book. If I tried for a hundred years I don't think I could ever create even one of those pictures. Also, they are technically perfect or near perfect as photography. She obviously knows what "image quality" means, but then she uses that as a foundation to go way beyond.

While I flippantly say fine art photography is anything created by someone with an MFA degree, I also know there are many people who know far more about this than I do. If they think a person holding a fish qualifies, it's up to me to ask why. And the question, of course, is the beginning.

I don't know if it's something I intuited myself years ago or whether I learned it somewhere, but for years I've comforted myself with the adage: The question IS the answer.

For myself in the world of photography, I don't know that I've yet come to know what the question actually is. So, I'll keep looking and asking until I find that question.
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*UPDATED* 5D Mark III Issue with EF 200 f/2L IS Official Canon Response

iDphotography said:
Hi everyone,

didn't found any news about this recently.
I just found out that I have the same issue with my 100mm 2.8 macro.

The sound starts quietly but then the volume increases and increases.
I don't want to damage the lens nor the camera.

Any updates on this?
Thanks

There has been no recent news because the affected lenses were recalled and fixed well over a year ago. The 100mm L macro was not affected, and I've not had a problem with either of my 5D MK III's, and have not seen it reported. its a relatively common lens, so users would be reporting issues by the thousands if there ware some sort of a general flaw.
http://www.canon.co.uk/Support/Consumer_Products/products/cameras/Digital_SLR/EOS_5D_Mark_III.aspx?faqtcmuri=tcm:14-923859&page=1&type=important
I suggest that you have it repaired.
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By Request: Comparison between Canon 40mm "Pancake" and Tamron 24-70mm VC

wickidwombat said:
awesome review thanks for doing that for me dustin!

from looking at it I have to agree with your take the tamron does seem to have noticably smoother bokeh
and it is clear the tamron would be sharper in the corners than a mk1 24-70 canon its here the 40mm blows the doors off the canon

also your pros /cons list forgot to give the IS win to the tamron :P

So now with some perspective of how it compares to a stellar lens like the shorty 40 its looking like a very good lens!

1 more question how are you going with the reverse direction zoom ring? is it wierd ?

The reverse zoom ring (which I'm not crazy about) is less of an issue on this lens because it is relatively short. I find it more of a bother on my 70-300L and also the Tamron 70-200 VC that I am in the process of reviewing, primarily because it means it is further away.

P.S. I've done a AFMA in better conditions on both of these lens and they are performing even better. The Tamron really does produce great images.
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Why can't the 70D be 40MP in regular mode?

IceAgeDX said:
nubu said:
The two "half-pixels" share the same front-lens so they probe the same spatial info and therefore are not increasing the spatial resolution. In order to double e.g. the horizonal resolution they would have to double the little frontlenses too but then they could not use it in the same way for phase contrast autofocus...

That makes sense.

Moving on, can you tell me about these little lenses? Are there literally 20million little tiny lenses?

Yes, there are.

And as already noted, these 20 million tiny lenses determine the image resolution - even though there's a 40mp sensor underneath.

The thing is, this 40mp sensor would have likely had quite poor image quality if it wasn't doing the 2->1 merging of signals.
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Stabiliser for 60D

I have something similar to the steadicam people are talking about (specifically, http://opteka.com/svexmkii.aspx). I got it because it was pretty cheap and I needed something that was better than nothing. That's basically what I got. I find this thing hard to balance just right (I have a T4i and I switch between a small Canon 50 1.4 and a large Samyang 35 1.4, so swapping between these two very different lenses is especially burdensome), and I find that sometimes even if I align it right the bottom part will loosen and slip, causing balance to randomly reset. If you can get it set, you can get shots that are smoother than what is probably possible with bare hands, but even then they aren't mind-blowing in any way.

It could be that I just haven't mastered this device yet. That being said, I would look further than what I got if I were in your shoes.
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Blocking The Viewfinder in a Long Exposure

Ellen Schmidtee said:
Old Sarge said:
I was reading an article in a photo magazine and came across a tip I have seen before and wondered about its importance or usefulness. The recommendation was to close off the viewfinder when making a long exposure. As I considered that tip I remembered that Canon used to include a viewfinder cover which could be attached to the neck strap.

Canon includes viewfinder cover attached to the neck strap with the 5Dmk2 & mk3. I'd be surprised if xxD & xxxD models didn't have one as well.

Even my 300V came with one on the strap, I know because it is my favourite strap. It only says Canon Eos on it and it doesn't have the rubber bit on the back like the new straps so it is much easier to swing round when carried on one shoulder like I usually do.
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New US Patent application (28mm, 35mm,39mm and 45mm) Pancake Lenses

US2013169851(A1) has been published on 2013-07-04. The application was filed 2013-12-19 and has foreign priority data JP2011-288116. The foreign priority date is 2012-12-28, hence the US patent can make use of the this date. We will likely see a Japanese publication within a week or two since the 18 month KOKAI publication date was due 2013-06-28.

The patent deals with the problems of designing gausian or modified gausian type lenses that:
- are relatively wide in a standard context
- are compact (short total lenght) even with a BF of 38mm
- are well aberration corrected, in particular sperical and curvature of field

There are 4 numerical examples given all 1/f2.8 and image height 21.64mm (EF lens)
1) F = 45mm, L = 58mm, BF = 38mm, Effective lenght = 20mm
2) F = 39mm, L = 62.5mm, BF = 39mm, Effective lenght = 23.5mm
3) F = 35mm, L = 63mm, BF = 38mm, Effective lenght = 25mm
4) F = 28mm, L = 65mm, BF = 38mm, Effective lenght = 27mm

Layout and curves for Sperical Aberration, Astigmatism, Distortion and Chromatic Aberration can be found in the patent : http://www.freepatentsonline.com/20130169851.pdf

MTF Charts for f/4 Lenses with 2xTC

neuroanatomist said:
Adding a TC doesn't affect the physical iris diaphragm diameter, but since it increases the focal length by 1.4x or 2x, it must decrease the f-number (focal length / iris diaphragm diameter) by one or two stops.

But I think we're all saying the same thing - the 'f/8' MTF for the f/4 lens plus TC is with the lens 'set' to f/8 (because it's a virtual/theoretical lens, it's set independently of the TC). So, 'wide open' and 'f/8' curves are really f/5.6 and f/11 with the 1.4x, or f/8 and f/16 with the 2x. I assume that concept applies to the f/2.8 lenses, etc., as well.

The charts are thus misleading for when TCs are involved. Nowhere on the Canon site does it explain the situations.
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fragmented fractal

cid said:
once upon a time with completly another interntion I screwed it and accidentaly captured this light blue beuty

guess what by <CiD>, on Flickr
That is how discoveries are made. Nobel prizes given out. It is not the taking of the picture (or the crash of an apple on the head) that matters. It is the analysis that follows and discoveries made then that matter. Remember the antigravity pictures others took, that I analysed and predicted the cause of the effect? The reason I am going to be bestowed the Nobel prize? See, same situation...

So when I make tea tomorrow morning, I will have a new found respect for boiling aqua...
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