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Mt Spokane Photography · Mar 25, 2012

ScottyP said:
sanj said:

Thank you friends for your inputs.
No, I do not find my 7D pictures soft at all.

Click to expand...

Clearly autofocus has its uses though. I know I couldn't have captured those lions running towards me as sharp as this while I'd simultaneously be running, screaming and soiling myself, if I had to use a manual focus lens.

The trick is to use a 800mm lens with stacked
tc's. The lions can be running at you 1/4 mile away

Mt Spokane Photography · Mar 24, 2012

I don't believe there is a answer to that. Where the front and rear body sections come together in the 5D3 and 7d, there is a gasket that supposedly has channels for both sides to seal well, the T2i may have a simpler gasket or none at all. The lens mount does not have a gasket on any of them, so there is a weak spot.

The high end bodies have more sealing, but in the same rainstorm, either one or both might fail, depending on how moisture got in. The odds of surviving are better for a better sealed camera and thats about all we know.

Cali_PH · Mar 24, 2012

Thanks for sharing, I was wondering how effective that 5DmkIII feature would be. I use a crop body and my 10-22 EF-S is my favorite lens, so of course I run into similar issues. I was hoping if I moved up to a 5DmkIII & 17-40L/16-35L the issue would be reduced, so glad to hear it's at least somewhat effective!

Mar 24, 2012

I am not sure what was your intent when you decided to post this.. but after reading it I have to give Amazon a +100 for responding and to you a -100 for over reacting

ScottyP · Mar 24, 2012

neuroanatomist said:
I've bought and sold on CL with no issues. As advised above, talk to the seller by phone first, if it smells wrong then pass. Meet in a public location in the daytime (hard to test a lens at night), bring your own camera. Test everything you can easily test.

Good advice. I was looking at a 70-200 f2.8 II described as "barely used, only a few months old, but something came up and I need money.....". Price was very nice, but the neighborhood is definitely one of the ones in our area that would give you pause. I was actually thinking about meeting at the local police station if I do call him. Walking into a strange area, carrying a fair amount of cash, meeting someone you don't know...

Mar 24, 2012

I assume there is less glass (smaller diameter of the glass) in an EF-S lens, so there is probably some cost savings there??? But other than this, unless it really is a big cost savings, what's the point of EF-S vs. just making a 31.25 EF lens (that after 1.6x crop multiplication becomes a 50mm on a 1.6 crop body...). I ask because I'd rather have a lens that will functionally work on both a 7D and a 5D than one that will only work on a 7D or rebel.

KKCFamilyman · Mar 24, 2012

Mine is running good and no dust.

Mar 24, 2012

glad everything is working out for everyone! i should be receiving my body from cameta on monday. i've been watching unboxing videos everyday, im dying.

Mar 24, 2012

I read April as a possibility, not sure where though. I guess that's not to much help... Sorry

Stephen Melvin · Mar 24, 2012

pedro said:
Have to wait for quite a while, but I will shoot the night away outside trying out all the crazy ISOs my current 30D cannot do...25600, 51200, 102400 8)

Yep.

ISO 25000:

ISO 102000:

Mt Spokane Photography · Mar 24, 2012

I expect that new button locations will be a pain after 4 years of using my MK II, it may take 3 or 4 days and they will all seem fine in their new location. We learn quicker than it seems.

bornshooter · Mar 24, 2012

70-200 f2.8 mk2

shannon by abledestroyer, on Flickr

Aglet · Mar 24, 2012

random banding is more likely caused by power supply instabilities or other system noise creeping into the sensor signal path. comes down to proper electronics design and shielding.
I found noticeable random horizontal banding in some older bodies I tested, like the 40D, when pushing shadows.
Makes me wonder how well it'd perform if the internal power supplies and shielding were improved...

Mt Spokane Photography · Mar 24, 2012

This topic has been moved to Software & Accessories.

http://www.canonrumors.com/forum/index.php?topic=4767.0

Aglet · Mar 24, 2012

LetTheRightLensIn said:
sarangiman said:

People keep touting the notion that ISO performance is increased, but DR at low ISO is not. I'm trying to understand how this is possible... is the following valid:

.. wonder, if so, if ACR will allow for feeding of dark frame avgs for each person's particular camera? Maybe the banding can be very greatly removed with an advanced RAW converter? Maybe if ACR refuses to put it in a program can be written to pre-process the RAW and then feed that altered RAW to ACR....

it still won't fix the poor read noise but at least most the ugly stuff can be rid and maybe you can 1/2 stop more usable??? (wild guess, not sure exactly how much) and of course it has to be that the vertical sort left on the5D2 is the sort that stays even frame to frame for the most part, not yet certain..

Click to expand...

I think fixed pattern banding should be removable to some degree with an averaging of dark frame noise using same shooting parameters from the same body. This could be done in ACR or an aftermarket plugin and is something I've already suggested to the group at Topaz.
It should also be possible to do this in Photoshop extended version by averaging some dark frames and then using that to subtract from the affected shadow area.
Doing it this way's gonna need some masking and levels tweaking to make the math work out but visually it otta be doable, just a lot of extra work better left to a specific plugin or raw converter front end.

Adobe, DxO, Canon?... you guys reading this? Get on it!

Mt Spokane Photography · Mar 24, 2012

There is little doubt that a high resolution body requires more care in focusing and higher shutter speeds. folks use to using a D700 may be in for a re-adjustment period, just as those that were among the first to use the 7D.

However, that is more of a user learning issue and the capabilities of the camera for someone who has learned to use it will be a fantastic upgrade for situations where more detail is needed.

I'm looking for extreme low ligh sensitivity, so my first choice is the 5D MK III, due to the price. If it does not provide, I'll look at the 1D X.

I do think that those who buy the D800 and learn how to deal with the high resolution will love it.

Mar 24, 2012

I shoot with a 5DII, so at the end after summing up all comments it seems that the 135mm would be the better focal length (considered also that I already have a Tamrom 90mm 2.8 macro, yes 2 stops slower that the Sigma, but I hope to compensate at least 1 stop with the 5DIII that's should be shipping as I write

Thanks all for the precious inputs!

K-amps · Mar 24, 2012

I was searching the Forum for AFMA and ended here... I ahve a quick question: On a 5d3, can I use AFMA for non-Canon lenses? Its seems it will not let me set it by lens.

Will the "All lens" setting work for Non- Canon lenses?

LetTheRightLensIn · Mar 24, 2012

MazV-L said:
Viggo said:

nightbreath said:

MazV-L said:

Speaking of the autofocus they say:"Unlike the 1DX, however, it loses the coupling of color measurement to exposure."
I'd like to know, in what situations would this be a problem? Thanks.

Click to expand...

5D Mark III simply doesn't have color-aware exposure metering. This feature is only available in 1D X.

Click to expand...

And that has everything to do with tracking a subject. But Canon have also stated that the 5d3 is better at tracking than the mk4.

Click to expand...

Thanks for answering my question Viggo
So how I understand it, this would be a necessary feature for a Sport's photographer but not a great loss if you're not?

Honestly, I don't think it's necessary even for a sports photographer. I think you need to have it set for all points or at least large zone AF. It might even do worse at times for sports for all we know. I could be wrong, but I don't see it as a huge loss for the 5D3.

Mt Spokane Photography · Mar 24, 2012

With camera lenses, there are other factors in play. at very large apertures, viginetting, distortion, CA, LOCA, etc. diffraction is always pressent, the airy disk getting larger as you stop down.

But, the other bad attributes are often greatly reduced as you stop down.

Thus, for each lens / sensor combination, there is a sweet spot where you get the highest resolution and least distortion, ca, etc. Usually, its about f/5.6 - f/8, but some lenses perform very well at maximum aperture or just 1 stop down.

There is no simple formula, its best to know how each of your lenses responds if you are extremely critical.

Undoubtedly, astronimical photography will have some different parameters.

DavidRiesenberg · Mar 24, 2012

The EVF is detachable / optional so it should both work for people who enjoy shooting with a viewfinder and those who not.

Ef lenses could be easily used using a simple adapter.

Policar · Mar 24, 2012

briansquibb said:
Cosk said:

A Cine lens is designed to correct for this, so the image is perfectly the same - throughout the entire focus range. This correction is difficult and expensive... and adds no value if you're a still photographer.

Click to expand...

I wonder if this process would help a macro shooter when focus stacking?

It would be useful. The issue is, to correct focus breathing, you have to essentially turn a prime into a zoom and have the lens zoom out as it focuses closer. The reason you still see focus breathing in a lot of movies is because it's SO expensive to correct for it completely.

I'm guessing these Canon lenses don't correct for breathing and are essentially rehoused L series lenses. I have no evidence of this, though.

Mar 24, 2012

amazing

bchernicoff · Mar 24, 2012

SomeGuyInNewJersey said:
Photoshop CS6 Public Beta wont open the 5d3 cr2's either but the release candidate for Adobe Camera Raw 6.7 opens them and doesnt seem to display the issues that DPP is showing.

Hopefully Adobe will get the LR 4 update that includes 5d3 cr2's released soon.

That's a great point. I processed in ACR 6.7 RC1 using the defaults. Looks great to me.

BTW, this picture was taken at ISO 100 with 70-200 f/2.8L IS II at 120mm f/4 1/90s with 430EXII/ Gary Fong Diffuser for fill.

Kane · Mar 24, 2012

I love mine for video and also find it one of my sharpest lenes on my camera even beats my 70-200 2.8 is which is also tack sharp

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