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Messages - Mt Spokane Photography

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Lenses / Re: Canon Double Rebates
« on: July 15, 2012, 08:44:41 PM »
If you do not need a lens, its probably not a good idea.  Personally, I always find a excuse for buying a new lens.  I could buy a 16-35mm l, 70-200mm f/2.8L, and several others that might be part of the deal.

The main thrust of the patent is the variable Apodization filter, and it will be expensive. 
A different translation of the patent:
Especially the present invention is using the shape variable element which made variable form of the interface which two different media form about an optical system, and it is related with the imaging optical system which makes it possible to control the light volume of the light flux which passes an optical system.
The technique of making the apodization effect variable is disclosed by the Patent document 2. In the Patent document 2, by transmissivity's differing, and arranging two kinds of mutually unmixed liquids in a closed space via the interface of an approximate sphere surface, and controlling the output of impressed electromotive force, liquid interface shape is changed and the optical element which made the apodization effect variable is proposed.

There is a ton of very technical calculations in the patent, and it gives me a feeling that it is not something that will be cost effective to build and sell for a acceptable price.
I really don't expect to see one on the market.

Lenses / Re: New lens choice 28mm 2.8 is or 40mm STM?
« on: July 15, 2012, 08:19:34 PM »
I certainnly love my 24-105mmL for walk around situations.  For low light indoor use, the 35mm L is a favorite. The 40mm is, however destined to a lot of use if Canon's mirrorless body is small enough to carry in a pocket or purse.

EOS Bodies - For Stills / Re: Quality gap 5DIII?
« on: July 15, 2012, 08:15:42 PM »
Cameras can and do vary from copy to copy.  The sensors are difficult to completely test, and can have issues.  Returning a underperforming camera is the best solution.  My 5D MK III had a exceptional sensor with very low noise, but I returned it because of the invisible focus points in low light and bought a slightly used 1D MK IV for the same price.

EOS Bodies / Re: Sensor Format
« on: July 15, 2012, 01:17:42 PM »
Depending on your camera model, you can set the aspect ratio in camera and it will show guides in the viewfinder to you can frame it to fit the aspect ratio you want.  You will still need to crop to the aspect ratio in photoshop unless you use jpeg.

EOS Bodies - For Stills / Re: 5D3 macro question (Possible Noobish)
« on: July 14, 2012, 11:48:20 AM »
Wondering if someone can help me here, I have only had my 5d3 for about three weeks. I tried to do a few macro shots today, (Close ups of flowers) using the kit lens.

Autofocus was spot on looking through the view finder but I could not get the camera to take the picture, nothing happened when pushing shutter. If I dropped to manual focus on lens or zoomed further out it worked fine. I haven't done much Macro before, is there something I am missing?

Or was the camera telling me I was too close even though it looked ok?
The 24-105mmL kit lens is not a macro lens, so if you get too close, it will not achieve sharp focus and if your camera is set to single shot, the shutter will not release.
If you change to AI Servo, the shutter will release, and you will get a out of focus image.
It is difficult to tell by looking thru the viewfinder when critical focus is achieved.
If you are mounted on a tripod, use live view with 5 or 10X magnification and manually focus.
A 100mm Macro lens will do a better job.

Distance is the factor.  APS-C and FF cameras also require different lenses.  When I photograph events, I have tried my 7D with primes, and have to crank up ISO so high that noise is a problem, so I use FF.  I take along my 35mmL, 50mm f/1.5, 85mm f/1.8 and 135mm f/2.
Then I use the one that fits the distance to the performers, and I can put on the 35mm if I need a wide view.  I find f/2.8 lenses to be too slow most of the time, because i am using 1/320 sec shutter speeds wherever possible due to motion.
Distance, motion, lighting all these can vary, so there is no way to know what you will run into.

*chimes in* If AI Servo gets to have black focus points I'd be happy, always a red confirmation would be even better.
AI servo shoots whether in focus or not.  Thats why it doesn't light.  USE AI Servo when you will be happy with near focus shots, or maybe totally out of focus shots if you force it to fire.  On the 5D MK III and 1 DX, you can select in focus priority for only the first shot, or for all shots, it depends on the subject.

EOS Bodies - For Stills / Re: 1Dx and f/8 AF: it works.
« on: July 13, 2012, 10:20:46 PM »
I tested my 5D MK III with 2 TC's, and it worked with a 70-200mm f/2.8 but slowly.  Other lenses ranged from not at all to unreliable AF.  I also found AF to be inaccurate.  The in focus light flashed and the shutter opened, but images had varying degrees of AF accuracy.
I decided it could not be trusted except on the 70-200mm f/2.8, and with 2 TC's stacked on it, IQ was far from what I'd want with a huge investment.
Also note that when you stack TC's, only the one closest to the camera reports, with Canon TC's, it reports the wrong aperture and focal lenght.

Amazon has a habbit of cancelling orders like that.  I ordered a 7D from them on the day it was announced, and they cancelled my order after two weeks due to what they called a listing error.  That meant I had to go to the back of the line.
I never even consider orderinng a new camera or lens from Amazon, Adorama gets them quicker and more reliably, so do local camera stores.
Lots of people got burned waiting for the 5D MK III, other stores had them for weeks before Amazon got any.

I use a 5D and a 20D, and I always use them in AI-servo.  I shoot from weddings to airshows.  The unlit points have never even crossed my mind.  Is there something about the cameras in question that makes this an issue on them where it's not on my 5D and 20D?
Yes!  The 61 AF points are tiny and have thin lines around them.  Those lines identifying the AF point are near invisible in low light.  The 7D has a similar setup, but with fewer and larger AF points and thick lines they are much more visible. Itd even easier to see the points on my 5D MK II, only nine of them, and they light up nicely upon focus.  You can even see them light up in the daylight, but not with the 5D MK III.
I returned mine, and am waiting for a fix.  Meanwhile, I keep using my 5D MK II and 1D MK IV

Pricewatch Deals / Re: Overstockdigital Legit?
« on: July 13, 2012, 03:14:46 PM »
Hell no! I spent 2 weeks looking at all these fake sites in New York. They have  fake scammy reviews  that are 5 stars then a few real 1 star reviews. They all do the same thing. Take your money, call you to try to up-sell you before they ship the item( if they even try to ship it). Then they usually give you a grey market, used, opened, or bootleg item.
Yes, I've noticed a lot of good reviews lately for known scammera.  As long as they post from various IP addresses, they can beat the system.  I have zero trust in Reseller Ratings, they just cannot prevent companies from scamming the system.

EOS Bodies / Re: Patents - EF 600 f/5.6 DO & 800 f/5.6 DO
« on: July 13, 2012, 03:10:07 PM »
Canon has issued a lot of lens patents with their new radial diffractive lens technology, apparently, they feel that they can improve the process enough to make practical production.  Its very difficult to get just the perfect particle dispersion in the resin so that the right colors of light will be diffracted the right amount.  The price will be very high, but the result can be a amazing reduction in size.
I keep expecting to see it an a new lens.

PowerShot Cameras / Re: G1x 730 at Amazon
« on: July 13, 2012, 10:47:04 AM »
I'll consider buying one at under $500.  Anything higher is grossly over priced.

Lenses / Re: lenses for my 7D - please help!
« on: July 13, 2012, 10:44:56 AM »
I've just taken delivery of a new Canon 7D (body only) for work. I've been recommended three lenses by the supplier who know what I'm going to be using the camera for:

70-200mm F/2.8L
50mm F/1.2L prime lens
15-85mm F/3.5-5.56

I'm going to be using it mostly for shooting videos in the mountains (in all weather types) in the UK, indoor/outdoor and under studio lights.  I know that the lenses are just as important as the camera (or more important depending on what you have) but there seems to be a huge range in pricing for the range I've been recommended. 

Unfortunately, the company I work for has a tight budget, but I don't want to get something cheaper and then find it's not going to get the best results.

I shoot a wide range of stuff, from a static shot of presenters in a podcast, to tracking someone skiing past me or with me skiing with them.

Could I ditch the prime lens and make do with the 70-200 and the 15-85?

Someone else recommended the Canon 50mm f1.8 which they said although a bit plasticy produced great results.  Plus the Sigma 10-20mm F3.5 EX DC HSM as another option.

I haven't shot video with a DSLR before so please excuse my ignorance!

My budget is around £1500 (US$2300)

Of the Canon Cameras, only the T4i (so far) will autofocus for video and track motion.  Its probably not going to work well for fast moving subjects, but far better than the 7D, which does not autofocus doing video ar all.
The T4 i also works with two lenses optimized for video.  There are a few other f/2.8 lenses optimized for video as well.
I'd take the camera back and do some research before buying.

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