24-70 F4 blows away my kit lens

Started Mar 2, 2014 | Discussions thread
Dandrewk Senior Member • Posts: 1,094
Re: My own tests, including the 55 1.8

dave92029 wrote:

Dandrewk wrote:

  • Comparing the three lenses at 55mm at the corners/edges, the 55mm was the clear winner, which is to be expected. Wide open, if I'd rate the 55mm as a 10, then the 24-70 is an 8 and the kit lens about a 4. Stopping down, all lenses improve by the same margin.

Wow! Your tests show you that the 24-70 is twice as good (rating of 8 vs 4) as the 28-70?

Perhaps, the reason I don't see much of a difference is that I rarely keep the entire image that I shoot, because I crop my shots and therefore, I only really use the middle 2/3 of the image that I shoot.

6000x4000 becomes approximately 4000x3000 after cropping. So the soft edges and corners that so many are fixated on are not used in my final images.

I rarely find a subject that perfectly fills the entire frame, so I need to crop in order to remove the extraneous portions of the frame to keep the focus on the subject. Is this unusual? Doesn't everyone crop?

If you do crop, does the sharpness in the corners and edges really matter?


Ok, maybe the kit lens is a 5.

Really though, it's a subjective judgement. The 24-70 is superior at the edges and has a much better build quality. Does that make it worth 3 times the price? That question has been asked before here, and only the photographer can answer it. FWIW, I think the kit lens is an absolute bargain and indeed gives better bang for buck than the 24-70.

Cropping is a way of life, but like David I try and avoid it. One of the reasons I buy zoom lenses is so I -don't- have to crop in post production. This sometimes gets me into trouble when printing though, especially when fitting into an 11x14, 16x20 etc. frame.

 Dandrewk's gear list:Dandrewk's gear list
Sony RX1R II Sony Alpha a7R II Sony FE 55mm F1.8 Sony Vario-Tessar T* FE 16-35mm F4 ZA OSS Sony FE 90mm F2.8 macro +7 more
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