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Topics - GuyF

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31
Pricewatch Deals / Euro 2012 Cashback - anyone got their money yet?
« on: June 27, 2012, 02:12:21 PM »
Having used Canon's cashback offer a few years ago with my 40D I know their concept of time is elastic. Any UK customers got their cheque yet under the Euro 2012 offer? If so, how long did it take?

Ta,

Guy.

32
EOS Bodies - For Stills / 1D X - what do TIPA know that we don't?
« on: June 10, 2012, 05:44:14 AM »
Flipping through a magazine yesterday and came across the results of the 2012 Technical Image Press Association awards. Best DSLR (professional) goes to the, as yet, unavailable 1D X. Just for the wild optimisim that they show I kinda wish the 1D X gets delayed 'til January. That'll teach 'em! And at this rate that isn't too far fetched.

http://www.tipa.com/english/XXII_tipa_awards_2012_13042012103433.php?iExpand1=70

Anyone else know of gear winning top awards before the finished production article hits the buying public?

One thing that makes me a wee bit suspicious of the whole TIPA award thing is that just about every manufacturer gets an award - best premium camera goes to Leica. Who defines what "premium" means?

Still, kept me amused for a few minutes.

33
There's an interesting article in the May issue of the British Journal of Photography that compares the low-light capabilities of the 5D mk3 and Nikon D4. Both cameras use their own 24mm f1.4 lenses in the article. As I've just bought a mk3 and Sigma 85mm f1.4 I thought the article would be pretty informative but was quite surprised to read:-

"Fast lenses are only part of the solution, as the microlens structure of sensors has the effect of limiting the maximum effective f stop - you get the reduced depth of field, but not the true lens speed. To compensate for this, camera firmware detects apertures faster than f2.8 and applies additional  gain. You must add the gain mapping applied at all apertures to compensate for vignetting."

It goes on to say that shooting at f1.4 and ISO 6400 will probably give you ISO 25600 in the corners. Yikes!

Well, you learn something new every day.

I guess those shooting Leica with a Noctilux f0.95 must feel robbed!

34
Lenses / 17-40mm and DPP
« on: May 27, 2012, 02:39:32 PM »
Just ordered my 5D mk3 plus 24-105mm and wanting either a 17-40mm or maybe the 16-35mm if my piggybank can stand it. I know the 17-40mm has more CA and distortion but wondered how well images can be cleaned up using the Lens Optimiser part of DPP - any comments?

Thanks for any opinions,

Guy.

35
Third Party Manufacturers / Tamron 90mm macro or Sigma 150 OS?
« on: May 26, 2012, 11:10:41 AM »
I've currently got the Tamron 90mm but have the chance to sell it to a colleague. Is the Sigma 150mm f2.8 OS a better lens? I'll be using it with a 5D mk3 that I intend buying very soon.

Has anyone compared the image quality of the two lenses directly?

(I've already discounted the Canon 100mm as I've got a couple of lenses that would cover portrait shots etc. hence the potential leap to 150mm.)

Any thoughts?

Thanks,

Guy.

36
Technical Support / 300mm f2.8 IS and Digital Lens Optimiser
« on: May 26, 2012, 10:54:13 AM »
I contacted Canon to ask if a lens profile for the 300mm 2.8 IS mk1 would be made available since they have one for the mk2. No reply. Hey ho. Anyone know if Canon are going to add to the profile database?

Thanks,

GuyF.

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