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Messages - AJ

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331
EOS Bodies - For Stills / Re: APS-C Image Quality (7d vs nex7)
« on: November 17, 2011, 11:57:21 AM »
The Sony NEX photo looks oversharpened.

Something's wrong with the 7D photo.  My 7D gives me much sharper results at 100%

332
Lenses / Re: Canon EF 100-400 f/4-5.6L IS "Soonish" [CR2]
« on: November 16, 2011, 10:39:24 AM »
The size of the front element is not what determines the f-stop.

It pretty much does for telephoto lenses.  e.g. the 200/2.8 has a 72 mm front element.

For normal and wide lenses the front element is not what decides f-stop.  This critical lens element is towards the rear.

If this lens is indeed a 100-400/4-5.6 with a 82 mm front element then the extra front element size may ease vignetting at the short end.   I doubt it would do much for the long end.

333
Lenses / Re: Canon EF 100-400 f/4-5.6L IS "Soonish" [CR2]
« on: November 14, 2011, 11:24:07 AM »
The 70-200/2.8 IS mk2 managed to improve performance without increasing front element size.  Ditto for 300/2.8 and 400/2.8.  I don't see why they'd have to do it with a 100-400.  FWIW, comparison with ultrawides isn't valid, optical design is very different.  As such there must be another reason for the increased size.

In theory, a 82 mm front element would allow 500 mm at f/6.3.

A 100-500/4-6.3 would be pretty exciting, and worth the high price tag if it performs at the long end.
And yes it would autofocus even at f/6.3


334
Canon General / Re: Filters: Cokin P Series "Equivalent" quandary
« on: November 02, 2011, 06:02:11 PM »
crop

335
Lenses / Re: New Lenses Imminent? [CR1]
« on: November 02, 2011, 05:38:16 PM »
I can't remember the last time an affordable non-L prime came out?  I think it was the 60/2.8

336
Canon General / Re: Filters: Cokin P Series "Equivalent" quandary
« on: November 02, 2011, 04:43:47 PM »
The Cokin P filter holder has three slots.  If you don't mind having only two slots, here's what you do: take a sharp utility knife and cut off the outer slot from the filter holder.  Voila, no more vignetting.  This 5 minute fix has served me well.

Good idea! ... however would like to know how wide can you go with 1 slot cut off (2 left) i.e. is 24mm ok?

I should have mentioned that I fixed my Cokin P filter holder for my Sigma 10-20 in this way.  So I can't tell you exactly how it's going to pan out for a 24-105 on a 5D.  However I can tell you there's quite a bit of gain in FOV.

337
Canon General / Re: Filters: Cokin P Series "Equivalent" quandary
« on: November 02, 2011, 11:20:06 AM »
The Cokin P filter holder has three slots.  If you don't mind having only two slots, here's what you do: take a sharp utility knife and cut off the outer slot from the filter holder.  Voila, no more vignetting.  This 5 minute fix has served me well.

338
EOS Bodies / Re: Beginner DSLR for video
« on: October 31, 2011, 11:29:26 PM »
The T3i is a really nice camera.  Go for it!!  Be sure to get the two kit lenses, 18-55 and 55-250.
You may be able to save some by getting a T2i.

339
EOS Bodies / Re: what the 1Dx may tell us about the 5Diii
« on: October 30, 2011, 01:24:26 PM »
i hope the new 1dx is telling us alot about the up coming 5dii ... i hope the ff sensor stays the same, no need for a larger mp sensor.  whats the point?

The point is: studio photogs and landscape photogs want more megapixels.

My guess is 5D3 early next year.  36 mpix,  iso characteristics similar to 5D2 on a pixel-by-pixel basis.

340
EOS Bodies / Re: Nikon D800 at 36mp, Will Canon Respond?
« on: October 05, 2011, 01:25:56 PM »
Ideally Canon will release:

(1) a 36 mpix cam for landscape and studio work.  No blazing fast fps and high iso here.  Maybe the 5D3?

(2) an 18 mpix FF photojournalism/sports cam with beefy build quality, dual card slots, top-of-the-line AF, 7-10 fps, and amazing high iso.   Maybe 1Ds4?

(3) no more APS-H.  1D5 = 1Ds4.

Not a prediction, just thinking about ideal uses.  This way the 5D3 doesn't really compete with the 1Ds line like it has in the past.  It would also align things better with Nikon's D800/D3 line.

Question then is price.  $3k is fine for camera #1, but $8k for #2 would be a problem.  Maybe they can give #2 a 7D like build quality, price it at $3-4k, and call it 3D.

341
EOS Bodies / Re: Opinion - What EOS Will Look Like by Photokina
« on: September 23, 2011, 10:58:16 PM »
I think the digic5 will make it into one or more of the dslrs this year.  Probably enough of a change to go from 600D to 650D.  I wonder what bells and whistles the digic5 will enable for video.

As for new sensors, I guess we'll just have to wait and see.

342
EOS Bodies / Re: Nikon unveils V1 and J1 Mirrorless Cameras
« on: September 22, 2011, 10:59:39 AM »
... you land up with a product which is rather like a motorbike with a sidecar - it inherits the disadvantages of a motorbike combined with the disadvantages of a car, and only satisfies a small market segment.
And you price that motorbike-and-sidecar higher than a fully loaded Honda Civic.

343
EOS Bodies / Re: Nikon unveils V1 and J1 Mirrorless Cameras
« on: September 21, 2011, 06:53:09 PM »
The lower end of the market could probably not care less about interchangeable lenses - they are perfectly happy with a compact. 

The higher end of the market insists on image quality - these users already have DSLRs and need a pocketable camera.
I agree with you.  I just don't see the market here.  And here we have a brand-new sensor and brand-new line of lenses.  Chances are, if this thing doesn't sell like hotcakes (probably won't) then prices won't come down in a hurry.  Olympus PEN hasn't exactly taken the market by storm.

I think if you look at it as a point-n-shoot with higher image quality than its 1/1.7" brethren plus the ability to change lenses, well then it's kinda interesting.  The price kills it though.

If you look at it as a mirrorless DSLR system with a miniature sensor and the same price as a proper APSC cam, then forget it.


what an epic fail....  i only hope canon will do it right.

Epic fail... I say probably, likely.

I sure hope canon gets a mirrorless system going with its APSC chips and an EF-S lens mount.  Why manufacture a whole new line, no upgrade path?  I just don't get it.  Why not use components already being manufactured?

344
Lenses / Re: Canon EF 100-400 f/4-5.6L IS Patent Pending
« on: September 20, 2011, 11:03:56 AM »
I suppose another way to look at this is that a 100-400 mk2 isn't just around the corner.  It's still early in its development phase.

345
United States / Re: Upgrading lenses
« on: September 19, 2011, 10:27:02 PM »
What's your budget?

Have a look at Sigma 120-300/2.8 OS.  Not a light lens, though.

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