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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 18 May 2014 (Sunday) 03:50
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Should I upgrade for a 6d + 24-70 f4?

 
Bmwzimmer
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May 22, 2014 08:50 |  #16

You also need to consider the t-stop value of the lens. The old 24-105 has a theoretical f/4 aperture but a transmission of 5.1. The new and more efficient 24-70 f/4 has an actual t stop value of 4.0 due to better elements/coatings/etc.​..
I had the 24-70 f/4 and 24-70 f/2.8 mk1 (tstop 3.4) and verified the exposure differences is more like 1/2 stop.
You can find a used 6d for $1300 and a used 24-70 f/4 for $850. They sell new grey market 24-70 f/4's on eBay for low $900's if you decide to go that route...

In my opinion,
24-70 2.8 mk2 > 24-70 f/4 IS > 24-70 f/2.8 mk1 > 24-105 f/4 IS

I've owned all 4


6D, Zenitar 16 f/2.8 Fisheye, Rokinon 14mm Cine, 35 f/2 IS, 85 f/1.2L mk2, 24-70 f/2.8L mk2, 70-200 2.8L IS mk1

  
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archer1960
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May 22, 2014 08:56 |  #17

ct1co2 wrote in post #16912437 (external link)
I doubt that going from a 3.7fps to 4.5 body is going to make any sort of substantial or noticeable difference. Your lower light limitations below 70mm are more a factor of your glass right now than your camera body. I agree with others there are more effective and less costly ways to meet your objective.

I would disagree with this part. The 6D's high ISO noise is probably ~2 stops better than the T3i. To gain two stops with glass is going to be a lot more expensive than a 6D body.


Gripped 7D, gripped, full-spectrum modfied T1i (500D), SX50HS, A2E film body, Tamzooka (150-600), Tamron 90mm/2.8 VC (ver 2), Tamron 18-270 VC, Canon FD 100 f/4.0 macro, Canon 24-105 f/4L,Canon EF 200 f/2.8LII, Canon 85 f/1.8, Tamron Adaptall 2 90mmf/2.5 Macro, Tokina 11-16, Canon EX-430 flash, Vivitar DF-383 flash, Astro-Tech AT6RC and Celestron NexStar 102 GT telescopes, various other semi-crappy manual lenses and stuff.

  
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FarmerTed1971
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May 22, 2014 09:18 |  #18

I say do it, but look for a better deal on the body. You won't be disappointed.
My upgrade was almost the same scenario, but I opted for an older 28-70 because it was f2.8.


Getting better at this - Fuji Xt-2 - Fuji X-Pro2 - Laowa 9mm - 16 1.4 - 18-55 - 23/35/50/90 f2 - 50-140 - flickr (external link) - www.scottaticephoto.co​m (external link)

  
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svarley
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May 22, 2014 17:01 |  #19

If I were in your shoes I'd probably update my lenses first anyway but the 6D does take some nice daggum pictures - here's one at ISO 6,400 with just a little NR applied in Lightroom: It's definitely tolerable. :)

IMAGE: http://www.seanvarley.com/St-Marks/Sacramento-San-Francisco-Trip/i-89JTGfJ/0/L/2014.05.14%20St%20Marks%20Sacramento%20Trip%200007-L.jpg



  
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timbop
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May 23, 2014 06:59 |  #20

the 6d + 24-105 is a better value, IMHO. If you can't get a good deal on the kit, then you can always buy a 24-105 on the used market for cheap


Current: 5DM3, 6D, 8mm fish, 24-105/4IS, 35/2IS, 70-200/2.8IS, 85/1.8, 100-400/IS v1, lensbaby composer with edge 80, 580's and AB800's
Formerly: 80D, 7D, 300D, 5D, 5DM2, 20D, 50D, 1DM2, 17-55IS, 24-70/2.8, 28-135IS, 40/2.8, 50/1.8, 50/1.4, 70-200/4IS, 70-300IS, 70-200/2.8, 100 macro, 400/5.6, tammy 17-50 and 28-75, sigma 50 macro & 100-300

  
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Bmwzimmer
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May 23, 2014 08:50 |  #21

timbop wrote in post #16924267 (external link)
the 6d + 24-105 is a better value, IMHO. If you can't get a good deal on the kit, then you can always buy a 24-105 on the used market for cheap

But for just $150-250 more, you can get a modern 24-70 with 4 stop IS, 80mm macro function (.7x magnification), and more than half a stop more light than a 24-105 (t/5.1 vs. t/4.0). I sold my 24-70 f/4 for $840 on CL but you might find one for $750-800 on eBay.

The images are just as sharp and contrast is just as good as the 24-70 2.8 mk2 stopped down to f/4. The images i shot with the 24-70 f/4 blew away my 24-105 and edged out the very good 24-70 2.8 mk1 as expected for a modern lens which caused me to sell the mk1 after weeks of side by side comparisons. At the time, I had a 50 1.2 for situations I needed a faster lens so f/4 was fast enough for me.


6D, Zenitar 16 f/2.8 Fisheye, Rokinon 14mm Cine, 35 f/2 IS, 85 f/1.2L mk2, 24-70 f/2.8L mk2, 70-200 2.8L IS mk1

  
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Jerobean
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May 23, 2014 15:22 |  #22

Bmwzimmer wrote in post #16924452 (external link)
But for just $150-250 more, you can get a modern 24-70 with 4 stop IS, 80mm macro function (.7x magnification), and more than half a stop more light than a 24-105 (t/5.1 vs. t/4.0). I sold my 24-70 f/4 for $840 on CL but you might find one for $750-800 on eBay.

The images are just as sharp and contrast is just as good as the 24-70 2.8 mk2 stopped down to f/4. The images i shot with the 24-70 f/4 blew away my 24-105 and edged out the very good 24-70 2.8 mk1 as expected for a modern lens which caused me to sell the mk1 after weeks of side by side comparisons. At the time, I had a 50 1.2 for situations I needed a faster lens so f/4 was fast enough for me.

It's weird to me that lenses can vary so much from their claimed f-stop and it not be considered a deceiving business practice.


_______________
6d, 24-105L, Tak SMC 50 1.4, 85 1.8, 135L

  
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FEChariot
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May 23, 2014 15:43 |  #23

archer1960 wrote in post #16922148 (external link)
I would disagree with this part. The 6D's high ISO noise is probably ~2 stops better than the T3i. To gain two stops with glass is going to be a lot more expensive than a 6D body.

OP is using a 18-135 which goes from f3.5 to 4.0 at 22mm. So a Sigma 18-35 starts out at 2 stops better and increases this lead about the second you touch the zoom ring. - $800

Add a 50/1.4 which gives him 3-2/3 stops over his 18-135 for another $350

Add a 85/1.8 which gives him a 1-1/3 stop over his 70-200/2.8 and 3-1/3 stop over his 18-135 for another $370.

At this point you are at $1520 which is still $200 below the B&H cost of the 6D and he has no normal zoom yet. If he gets the 24-70/4 with the 6D then he could have added all the above lenses plus a 135/2 for the crop camera and still be ahead.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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Should I upgrade for a 6d + 24-70 f4?
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