IQ of 7d w 15-85mm Vs 6d w 24-105mm?

Started Mar 8, 2013 | Questions thread
MAC
MAC
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Re: 24-105mm rated 50% better than 15-85 at dxo
In reply to Dave Luttmann, Mar 11, 2013

Dave Luttmann wrote:

MAC wrote:

qianp2k wrote:

$3K for these lenses, then you are ready for FF

Not true. You can have wonderful photos with 24-105L that generate better photos than EF-S 15-85 or 17-55 on APS-C, period.

Then tell us why your 24-105 broke in Italy - period

and tell us how mid frame can look so bad on FF at F4

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=355&Camera=453&Sample=0&FLI=0&API=0&LensComp=675&CameraComp=736&SampleComp=0&FLIComp=0&APIComp=1



Or maybe he can tell us why he is commenting on cameras he doesnt own or experience.

He's not weighing all information. And he is quoting dxo who is not transparent with how they did the MPix testing. You've experienced similar results up to 20x30 between crop and 5dii at base iso for scape type of shooting -- and that would be my conclusion as well -after weighing all of the information

5dii/6d comes into play with the primes and higher iso's for shallow dof. But I'm liking my 60d/T4i all the way up to iso 3200 and with processing, getting sharp, nice photos with my primes and a lot less weight -- and at 1/4 to 1/2 the costs

Even if you believe dxo within 1 to 2 MPix units error, and I'm not saying I do because if they changed the distance, all bets are off -- and comparing resolution across formats is not apples and apples, but even if there is some truth to it:

1) 12 Mpix is sad number from 5dII plus 24-105. Within an error of 1 or 2, and for 1/4 to 1/2 the price with primes, my 60d or T4i gets 10 or even 11 -within experimental error -- no difference. Use my 35 f2, or 50 f1.4 or 100L or even use my 5dc. 12 MPix is not a good number for a 21 MPix 5dII with a zoom lens

2) And I expect the new sigma 30 art to be even higher.

3) We're talking a 4x zoom with the 24-105 versus a 5x+ zoom with the 15-85 -- last I checked, more range with 5x zoom

4) 15-85 has better IS as well.

5) After processing images at base iso, things level even further. Those looking at 100% pixel peep will be misled. One should look at prints after processing -- and even large prints iso100-400, one will not see differences

6) he has refused to take blind test on prints

7) dxo will get one into a bunch of wondering and mis-information when it comes to real shooting.

8) He has the 60d + sigma 17-50, and should know that on the prints made by him (he does little printing and a lot of pixel peeping), there will be no difference. So why spend the 2x to 4x extra money on more weight -- with no sales.  His wife will carry the extra weight on vacation.  Go figure.

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