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Messages - mrsfotografie

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211
I'm fine if Sigma copied the best 50mm lens ever made.
"Imitation is the sincerest form of flattery."

I think it's too strong to say that Sigma 'copied' Zeiss. Manufacturers keep an eye out for technology from the competition and try to learn from them as well, but 'copying' is generalising too much. Sigma has incredible lens-design know-how (it is their core business!) and recently they decided to up the ante - and also the price of the new products. It's not as if Sigma suddenly became better at lens design, it's the way they approach the market that changed.

212
Technical Support / Re: Help! My Camera Won't Focus After Cleaning It.
« on: January 11, 2014, 05:49:39 PM »
Ok by me.  Even without a grip, a full size dSLR with lens(es) isn't 'packing light'.

I shoot mostly with a grip, too ;)  Just teasing. I like the 1DX, but the 5D3 is plenty of camera for what I do and the difference in cost can go into more glass as I'm never satisfied on that side of things. I somehow always have another lens on my mind  ::)


213
Technical Support / Re: Help! My Camera Won't Focus After Cleaning It.
« on: January 11, 2014, 05:09:32 PM »
Don't rub it in  ;)

I guess I shouldn't mention the built in viewfinder shutter, either.  :P

It lacks the option of having a removable grip though, so you're always stuck with a square camera even if you want to pack light  ;D ;D :P

;)

214
Lenses / Re: The 10 Oldest Canon Lenses in Production
« on: January 11, 2014, 02:46:35 PM »
I've been praying for years for a fast ultra wide prime. 20mm f/1.8 ; 18 f/1.8 and i'll buy two of each !


Not Canon, nor loved by all, but Sigma has been making one for years. It's a specialty lens for sure and I love my copy even with its odd MF/AF clutch and switch mechanism:

http://www.sigmaphoto.com/product/20mm-f18-ex-dg-asp-rf

215
Third Party Manufacturers / Re: Will vintage lenses help me find the way?
« on: January 10, 2014, 08:24:00 PM »
+1...if you not in hurry, wait for x-mas holidays. BH has great deals on EF and L lenses.

I'm envious of the low prices on camera gear in USA. :D
I think that the shipping costs and customs fees would nullify any savings.
And i can't see myself staying for a whole year with just a 28-135 and a nifty fifty.... :P

+1, we suffer from a lot more tax  ::)

I don't know where exactly you are from, but in Qu├ębec (Canada), it is a bit ridiculous! Gear sold at B&H is cheaper with taxes, customs and shipping than here before taxes (and we have 14,975% of taxes).

I'm in the Netherlands, 21% tax  :-\

216
Third Party Manufacturers / Re: Will vintage lenses help me find the way?
« on: January 10, 2014, 07:58:51 PM »
+1...if you not in hurry, wait for x-mas holidays. BH has great deals on EF and L lenses.

I'm envious of the low prices on camera gear in USA. :D
I think that the shipping costs and customs fees would nullify any savings.
And i can't see myself staying for a whole year with just a 28-135 and a nifty fifty.... :P

+1, we suffer from a lot more tax  ::)

217
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 07:56:40 PM »
May I ask where you obtained the chip?


You can get that from ebay.  I am not handy and lazy people, so I bought Nikon version and use buy the converter with confirming chip.

http://www.ebay.com/itm/AF-Confirm-Nikon-AI-Lens-To-Canon-EOS-EF-Mount-Adapter-For-7D-50D-60D-550D-/190978964133


That is an interesting product... almost makes me wonder if there is an adapter that allows AF too...

218
Sigma seems to have an "enhanced" double gauss design, by the way:

http://www.sigmaphoto.com/sites/default/files/311-lens-construction.jpg


Very true, I would say. It's very similar to, but simpler than the 35mm, and it looks almost like they took a double gauss design and added an entire set of front elements to correct all sorts of aberrations, almost like two lenses in one. Here are the two designs compared to the double Gauss of the 1.2L (bottom):

(Top to bottom: Sigma 50mm A, 35mm A, 50L 1.2)

Note: that 35mm A has some engineering gone into it; makes the 1.2L look shamefully simple (and overpriced despite the elements being bigger of course!!!).

219
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 11:47:59 AM »
E-bay, look for 'Canon EMF AF chip' or 'AF confirm chip' if you don't need the EXIF data.


I got a programmable chip (recommended), that allows you to program the max aperture and focal length of the lens, as well as micro focus adjust on the chip itself. I'm sure you can find it on ebay somewhere but I got it here:

http://www.fotoshopaalten.com/nl/af-bevestigings-chip-voor-canon-eos.html

220
Reviews / Re: Review: Tamron SP 90mm f/2.8 1:1 Macro VC USD
« on: January 10, 2014, 08:14:55 AM »
Do you think it's a worthwhile upgrade for those who have the 'old' non-VC version??

I definitely do, particularly since you get not only a slightly sharper macro lens, but also because you get a much more effective modern medium telephoto with a great stabilizer.  The new lens does a lot of things really well and doubles as a great general purpose lens.  I think its worth the upgrade, particularly if you can get a decent price on the used market for your old one.

Thanks, I may consider putting this lens in my upgrade path. I really like that the new version is non-extending. FWIW the image quality from the old macro is fabulous, not so much the looks of the thing...  ::) ;D

221
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 07:45:34 AM »
Just finished chipping my 14mm with a Canon EMF AF chip :)

I had to make a spacer to get the chip's contacts to the correct height, but after that installation and configuration was very easy.

Works like a charm! Very handy to have aperture and focal length data in EXIF. AF confirm and AF adjust also works, but because the DOF is so large there is quite a lot of margin. Live-view x10 works better :)

I find the focus ring a but spongy, there seems to be a bit of a dead area before it catches and changes focus, is that normal?

I also made a spacer, much in the same way. No complaints about my focus ring, it operates smoothly not spongy.

222
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 10, 2014, 01:05:12 AM »
Like some other people have said, I had trouble nailing focus with this lens at 2.8. The 5dIII focus screen was just not accurate enough to portray fine focus in such a wide FOV

It's even quite difficult with the precision matte in my 5DII. The solution is to get an AF confirmation chip and calibrate it to give you confirmation at the aperture you desire. Be aware there is some focus shift in this lens depending on the aperture used! I use the precision matte to dial in the focus at f/2.8 to f/3.2, and have the AF chip calibrated for f/4 which gives reliable results from f/3.2 and up.

223

In both cases, the lenses need to be perfectly usable at their maximum aperture. The current 1.4 (at least my copy) wasn't.

The current 1.4 at f/1.4, 1/60sec, iso 1600, handheld  ::).

Thanks for sharing that.  I think the wildcard in any assessment of the Canon F/1.2L and F/1.4 is copy to copy variation.  My 50 F/1.4 @ 1.4 is solid in the center but is problematic away from it.  I relegate most shots to F/2 or narrower because of this.

Roger at LR has posted at length about the scatter seen in his stable of lenses.  Some copies are stellar while others are weak. 

Thankfully, the newer Canon non-L IS refreshes have really tightened up the performance to where most new lenses are loosely equivalent in performance.   Hopefully this new Sigma will also have a small copy to copy variation as well.

- A

Just to be sure, that image I posted was made with the Sigma 1.4 ;)

224
Reviews / Re: Rokinon 14mm f/2.8 Wide Angle Review
« on: January 09, 2014, 03:38:03 PM »
The new one has the 'UMC' coating for better flare reduction.

I must have the correct one "Samyang 14mm f/2.8 ED AS IF UMC Aspherical" ;)

225
Reviews / Re: Review: Tamron SP 90mm f/2.8 1:1 Macro VC USD
« on: January 09, 2014, 01:30:16 PM »
Do you think it's a worthwhile upgrade for those who have the 'old' non-VC version??

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