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Messages - Mt Spokane Photography

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Lenses / Re: Another I need advise on a lens thread......
« on: August 12, 2012, 02:17:21 PM »
If you need a faster lens, you should determine the focal length that is missing.
One way I've determined this is to look at my images in Lightroom according to the quantities taken at various focal lengths, apertures, and ISO settings.  If I see a high quantity taken at say 24mm with a high ISO, then I might benefit from a faster lens.
I think that you have a good selection, but if you are taking a lot of images at 24mm but a normal ISO range, perhaps a wider lens would be a benefit.  A 16-35mm L would be a nice adition.  Never base your purchases on a rumor, some new lenses have been rumored for 6 or 7 years.
Canon just started a lens rebate, so take a look at your focal lengths and pick one that you need.
Using the metadata tools in Lightroom might pay for it by saving you money on a correct lens selection.

EOS Bodies - For Stills / Re: 1Dx Err 80 is only the beginning
« on: August 12, 2012, 02:04:19 PM »
I report the error 80 five month ago but no firmware update came up.

There are futher errors that are not fixed.

That´s the fact.

Canon. You are going to loose customers.
Amazing, you have had a production1D X for 5 months?  I thought they just began delivery.

EOS Bodies - For Stills / Re: Canon 5dc, better than T1i?
« on: August 12, 2012, 02:01:28 PM »
Getting a faster lens will be a long lasting purchase, and give you one or two stops gain.  This might be a issue with shallow depth of field, but it usually is not a problem except for very close images.
The 5D will also be a benefit, but its also getting up there in years, and there is a good possibility thast Canon will not support it at some time in the not too distant future.
I'd recommend going for a faster lens rather than going to FF and then buying a bunch of new lenses anyway, if only because your lenses will all be much wider and you will need longer ones.
Consider that you will need some new lenses as well as the body.  That 28mm f/1.8 lens produces a image similar to a 45mm image on your crop, so a 50mm f/1.8 would be the FF equivalent.

EOS Bodies / Re: 1Dx and CF card issue?
« on: August 12, 2012, 01:53:20 PM »
+1 for the remaining shot estimate having the potential to be wildly off. I saw the same on my 450D and currently experience this on my (gasp) D700. It reads 605 shots remaining for an empty 16GB card, where I regularly get 1200+ in real conditions.

Just changing the ISO is not the whole story. File size is a function of the entropy of the image, which in this case is most commonly created through noise. As noise is typically highly amplified in shadow OOF regions, these are the sorts of images that will take up more card space. Images with high ISO shot in good light, such as for high shutter speeds, will not increase the file size as much as images shot in low light at high ISO with large amounts of dark OOF areas.
If the camera were amplifying the dark regions more than the light ones, all we would get is a gray image with little or no contrast.  Canon has not yet been able to control the gain of individual photosites, and, if they did, they still would not amplify dark ones to brighten them up.  Black is black.

You are not correct in believing that the t4i sensor is the same. 
Canon has stated that they believe 18mp is the optimum photosite count for the best overall quality of a APS-C sensor, but that does not mean all 18mp sensors are the same.
The T4i sensor has changed to allow hybrid autofocus.  There are some microphotos of it here:
Here is the 550D Sensor:
The 7D Sensor:
Here is a index to the image sensors analyzed by Chipworks.  They do not necessarily check them all, someone has to buy the analysis.  Normally, a analysis is purchased by the competition to help determine if a patent violation has occurred, for example.

Software & Accessories / Re: Need to PDF a set of photos
« on: August 12, 2012, 01:17:34 PM »
Not included in Windows
Adobe Acrobat is the best at this, but there are several other programs that will work fine. Unfortunately, I have not found a photo website that lets you view them online.  You can also save as multi page tiffs.
I also use ACDSEE's Photoslate 4 to create multi page albums and save them as PDF's.  I can select the image size to save, so a small file for e-mail, or a large high quality one for printing.  I usually end up saving them with Acrobat because it makes a smaller file for the quality. 
I'm sure that there are lots of third party PDF generators.

Pricewatch Deals / Re: Canon USA August Rebates
« on: August 12, 2012, 01:08:13 PM »
Why not over here?  >:(
I can't tell you why there are no rebates "Over Here", wherever that it, but it is dependent on the way Canon is organized.
Canon sales are broken into different regions with each region being a separate profit center.  This means that each region has separate management and policies as well as prices.  Each region tries to meet their quota for sales, cash flow, and profit.  Sometimes, sales slow down, so a rebate might increase sales and cash flow.  Profit may or may not be increased.  Selling 3 lenses at a $100 profit makes more money than selling one for $200 profit, so the trick is to have a small price cut and triple the sales.
There is a danger, buyers come to hold off on purchases waiting for a rebate.  This can play havoc with sales and inventory levels, and can result in shortages as production slows down and then a buying spurt uses up the inventory.
Different regions have their own managemt who manage the business in their own way.  As long as they meet their goals, Canon is happy.
However, you can bet that no one is meeting their goals.  Global sales are slow, and sales in the US and Canada seem to respond well to the rebates.

Technical Support / Re: 7D Firmware Update
« on: August 11, 2012, 02:10:08 PM »
If the camera is totally frozen, you can remove all the batteries, both the main battery and the button cell which, I believe is accessed thru a removal cover on the bottom left side.  After 5 or 10 minutes, replace the batteries and see if it comes to life.
Even a momentary power glitch while the camera is updating can corrupt the firmware and freeze the camera.
Mine updated fine.

Technical Support / Re: Question about preserving a print
« on: August 11, 2012, 10:48:32 AM »
Eventually, water vapor will get to it.  Thru the back, front, or cut edges.  There are spray sealers like krylon, just don't invest too much in the print.  Have a cheap one done at Costco that can be replaced in a few years for $50.

Lenses / Re: How do you update Canon lens firmware?
« on: August 11, 2012, 10:43:14 AM »
We do not know about the firmware in the newer STM lenses, they may be very well updatable thru the camera, but I doubt it.
The issue with some of the 40mm lenses is almost certainly a easy fix of the body firmware.  Its the body locking up and failing to focus, not the lens.

EOS Bodies - For Stills / Re: Canon 5D MK3 not as sensitive to reds?
« on: August 11, 2012, 12:37:32 AM »
It has been reported that the 5D MK III does not oversaturate the reds as badly as the 5D MK II and some of the earlier cameras.

There seems little doubt of that.  Women have become a very large user of cameras, and a high end but small camera that can be easily carried to social functions and allow high quality images is going to sell.
Anyone who values the smaller size may want one.
I have big hands, so i want to actually try one, and verify that the touch screen makes it usable for me.  The small cameras like the S100 are impossible for me to operate.

Third Party Manufacturers / Re: A Small Sigma 180 f/2.8 OS Macro Issue
« on: August 10, 2012, 09:28:02 PM »
Why the heck are the new top line Canon cameras so broken?

Companies like Sigma reverse engineer Canon algorithms rather than license them.  I'm surprised it doesn't happen more often.

This isn't because of reverse engineering.

The Sigma lens is telling the Canon camera that it is Canon EF-ABCE and the 5D3/1DX have a built in map to address light falloff for the Canon EF-ABCE lens and apply that to the image created with the Sigma lens without knowing that it isn't required.

Sounds like it to me.  Canon wrote the software and knows how the mapping works and Sigma does not.  Sigma tries to find an entry that "works" without any adverse affects.  Sigma doesn't know what the correct code should be.  Sigma tests their new lens on existing bodes (pre-5DIII and 1DX) and thinks they have their settings correct.  New cameras come out with new properties for the existing table entries (i.e. for lens correction in camera) Sigma gets caught with an improper entry.  If Sigma had licenses, then they would have had the tables and possibly have their own lens profiles loaded into the newer cameras like Canon did.
The solution is fairly painless, turn off  illumination correction when shooting jpeg.  Use RAW if you can, and do not turn it on in DPP if you use it.
Canon is not going to reverse engineer or modify camera software to support lenses that they have no control over.  Sigma could pick a Canon lens with a similar properties to report to the camera. 

Lenses / Re: Lens creep. Is this normal?
« on: August 10, 2012, 10:39:17 AM »
Mine creeps pretty bad...  If i've got the camera hanging by the strap around my neck for 5-10 minutes, guaranteed by the time i pick it up, it will be at the 105 position...
I do think that they will pretty much all creap if carried around on a lens strap for 10 minutes or more. 
I call it creep when I am using a lens and point it up or down while setting up or taking a photo and it creeps out or in causing me to have to hold it in place.
A lens lock is the only way to prevent it from zooming fully out while on aa strap and walking around.
The OP might tell us when it creeps and we would know the situation better.

EOS Bodies - For Video / Re: Recording time cornfuzion?!
« on: August 10, 2012, 10:30:53 AM »
I second the above opinions, get a camcorder suited for the job.  HDDSLR's are fantastic where you can rehearse and have a dedicated focus puller, and redo missed sequences, but using four of them for a live event with no autofocus will be frustrating, even if you can manage all the other details needed to produce a finished product.  The T4i has autofocus of sorts, but not up to camcorder capability.

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