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Messages - Ellen Schmidtee

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Lenses / Re: New Canon 50mm Coming? [CR1]
« on: July 17, 2012, 08:41:05 AM »
For $849, I'd expect a 50 f/1.4 to either have Zeiss class build & IQ, or the abilities to make coffee and <self censored>

EOS Bodies / Re: Should/can Canon keep making its own sensors?
« on: July 17, 2012, 06:06:24 AM »
As noted above, Apple never developed CPUs, it just switched CPU manufacturors.

As time progressed, it became harder & harder to design & manufacture competitive CPUs in commercial quantities, which led to a reduced competition. I'd rather this wouldn't repeat itself in the camera sensors market.

E.g. in the 80s most PCs had different processors, in the 90s every workstation manufacturor made it's own processor and slapped Unix on top of it, nowadays wintel rules both markets. My impression is that the lack of competition isn't doing anything food for the customers.

There are new developments in digital camera technology, such as Sigma Foveon sensors & light field cameras, and competition is good for that. Companies have a hard time being leading in electronics and optics and ergonomics and ..., but bottom line we - the customers - stand to benefit even if the camera brand we use is losing on one of those fronts.

Why is the aperture's position not marked, as in other patents?


Maybe there is no aperture, and this 'electronically controlled liquid' is an Apodisation filter/element that can also act as the aperture control?

Fleetie's reponse made me think the same.

Also, there's very little space between the elements, though I'm hardly in position to rule out the possibility that there's enough space between the 2nd & 3rd elements from the right.

Why is the aperture's position not marked, as in other patents?

My brother plays for several bands, and I've shot two of those several times in low light conditions (= on stage with whatever lighting those places have) with 5Dmk2 & 600D. Usually, I stand right at the stage, as the flat floors would cause the crowd to block my view of the band.

I get a lot of positive feedback for photos with diagonal fisheye lenses
  • of the whole band playing, the band members bowing to the crowd at the end of the show, etc. Point being - capturing the spirit of the show by pulling in a wide shot with a lot of action.

I find it harder to compose with rectilinear ultra wide lenses, especially as both bands have women.

I've got good results with EF 85mm f/1.8 & 135mm f/2 L, usually of those who sing - the others are usually, though far from always, too concenrated in playing to make interesting facial expression.

* EF 15mm f/2.8 on the 5Dmk2 & Samyang 10mm on the 600D

Really hope this means that a new 135mm f2 L comes out, I have been dying to get one but can't afford it, hopefully they will come out with a new one and I can pick up an old one on ebay on the cheap!

It's cheap for an L lens, and it has really good IQ - I can easily recognize which photos I took with it because the colors, sharpness, and contrast are much better than those of my other lenses.

Canon would have to really out-do itself to make me upgrade this one.

Lenses / Re: A New EF 50 f/1.8 IS? [CR1]
« on: July 11, 2012, 02:28:00 AM »
Can't find the source at the moment, but the original claim was that the additional light coming through hits the sensor at such an oblique angle, that it doesn't go into the pixel wells.
This explanation applies only to the corner and the edge of the sensor. Does not apply to the middle of the sensor.  Therefore you can end up with a highly vignetted at the corners.  Canon user with f 1.4 lens does not really complaining about serious vignetting. Therefore your reasoning is questionable.

It's neither my reasoning nor complaint - I just recalled the web page the other participant based his complaint on.

Lenses / Re: A New EF 50 f/1.8 IS? [CR1]
« on: July 10, 2012, 08:48:13 AM »
With current Canon cameras (up to the 7D at least), reports put the fastest aperture that increases light to the sensor at f/2.  If you shoot at f/1.4, the ISO is "invisibly" bumped (it still reports as say ISO 100 but the files are noisier than they should be).

I'm sorry but this is simply not true in any way shape or form. The f stop is a ratio that describes the light transmission (I know T-stops are the real deal but we are working in the vernacular here) of the lens. Saying that an f1.4 lens doesn't pass any more light than an f2 lens is nonsense. To suggest that a camera would "know" that an f1.4 lens or faster was mounted and would choose to "throw a way the extra light is also ludicrous.

Can't find the source at the moment, but the original claim was that the additional light coming through hits the sensor at such an oblique angle, that it doesn't go into the pixel wells.

Lenses / Re: A New EF 50 f/1.8 IS? [CR1]
« on: July 08, 2012, 12:23:18 AM »
Interested if:

- 1.4 not 1.8
- USM ring
- round aperture
- sharp wide open
- IS (sure why not)
- great build quality, weather sealed (new 1.4 50L?  not likely)
- reasonable price

Yeah, I know, I'm dreaming.

If Canon makes a lens with the first four items + reasonable price, I'm buying.

Lenses / Re: A New EF 50 f/1.8 IS? [CR1]
« on: July 07, 2012, 01:07:46 PM »
Well, as f/2.8 is the NEW f/1.8, we should consider ourselves lucky to get a new f/1.157 and a price tag to rival the old f/1.2

Lenses / Re: TSE Macro Lens
« on: June 30, 2012, 12:07:26 PM »
A few years ago I used to have a Carl Zeiss macro lens lens for my Contax camera, a 100mm f4 S Planar bellows lens.  This lens produced a much larger image circle than 35mm.  It had to be attached to the camera via automatic bellows, which had a swing and shift mechanism built in.  Photographing small objects like boxes require converging vertical correction like buildings.

Does anybody think Canon would introduce a 100mm f2.8L TSE macro lens, it would be a worlds first for digital.

Schneider Kreuznach has a 90mm tilt-shift macro lens for EF bayonet.

EOS Bodies / Re: Canon EOS 7D Successors [CR1]
« on: June 29, 2012, 03:20:16 AM »
I keep saying APS-H is just too good to shelve.  It doesn't give up very much to the 5DIII sensor as it is.  I wouldn't hesitate to add a 1.3 7D to my stable.  :)

Could this be the 120mps monster they showed a couple of years ago - that would wipe the smirk of the D800 fanboys  8) 8) 8)

Are there any lenses for the EF mount that are sharp enough to resolve 120MP?

Just type 'tc-80n3' into ebay, you'll get a few hundred results.

Damn - there are a few that at least look like original Tc-80n3 by top sellers and cost <$50.

Where I live, it costs $200+ w/ all taxes included.

I'm looking for an intervalometer for the 5Dmk2, and the Tc-80n3 is insanely priced.

The basic function I'm looking for is 'shoot a photo every X secs/min till I stop it, the battery runs out, or the 2nd coming, whichever comes first'.

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