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Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

JVan_02
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p.27 #1 · p.27 #1 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Gallery for the 40 G: https://lightroom.adobe.com/shares/1c9fca2c7ee445cca5557a718ea7275a

EDIT: Posting the vid again in case anyone wants to give it a look. Dude only has 46 views as of this writing haha

Mar 25, 2021 at 11:28 AM

ytwong
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p.27 #2 · p.27 #2 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Those small lenses are interesting, but makes the A7C looks more appealing.

I think using optical distortion correction does not mean there is no loss of resolution. I think some fisheye lens has really good corner sharpness. Sure you don't loss pixels but loss of sharpness could be still there. The FE 28/2 (a well-centered one) corner is sharp before sw correction.

Leica Q has high distortion people praise its lens anyway. (But then it's Leica)

Looking at the comparison in cameralabs, I don't think the Sony is inferior to the Sigma. At the same time, the Sony is slightly faster, smaller and lighter too.

** I was very against sw correction back in DSLR days but then you can't have sw correction on viewfinder and that affects composition.

Mar 25, 2021 at 12:02 PM

Eruditass
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p.27 #3 · p.27 #3 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Interesting that Sony is jumping on these after 3rd parties came. Would still love to see a tiny telephoto like the trusty Pentax APS-C 70mm pancake

Mar 25, 2021 at 12:49 PM

chez
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p.27 #4 · p.27 #4 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Eruditass wrote:
Interesting that Sony is jumping on these after 3rd parties came. Would still love to see a tiny telephoto like the trusty Pentax APS-C 70mm pancake

Don't think it has anything to do with 3rd party lenses. I think these lenses were always part of the A7C roadmap. A light setup that basically replaces the need for APS-C system.

Mar 25, 2021 at 01:16 PM

bjornthun
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p.27 #5 · p.27 #5 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

I have read (Thom Hogan?) that lens planning and development takes maybe 12-24 months, so it’s hard to tell who inspired whom to make small primes. Was it Tamron, Samyang, Sigma or Sony? Remember that Sony 28/2, 35/2.8 ZA, 50/1.8 and 50/2.8 Macro all came early, but none of them has got an aperture ring.

Mar 25, 2021 at 01:46 PM

imagesfromobjects
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p.27 #6 · p.27 #6 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Looking like a direct ripoff of the Sigma lenses, tbh.

(sorry, had to say it)

arbitrage wrote:
Just posting one of the three as they are all identical other than the lettering on the front...

Mar 25, 2021 at 11:01 PM

philip_pj
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p.27 #7 · p.27 #7 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Sony released the a7/a7r in 2013 with the 55/1.8 and diminutive 35/2.8 so they were aiming for a Leica-esque system at first, or so I interpreted it. They were tiny at the time, it was back in DSLR days.

Simple lenses with straightforward design - like the slow Loxias - took less than a year all up, Zeiss have said. I bet the Milvuses and new APOs are a longer term process. There is a lot of give and take between product design, optical and mechanical design, and prototyping with a lot of intensive QA feedback, then final manufacture.

We'll be awash in small lenses soon, of all levels of pricing and quality and speed. Great news!

Mar 25, 2021 at 11:28 PM

Petegh
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p.27 #8 · p.27 #8 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Lloyd Chambers has manually corrected the Sony 24mm f2.8 distortion on his blog today, and confirms, that there are 'major losses of sharpness particularly in the outer zones' as a result
https://diglloyd.com/blog-30.html

Mar 26, 2021 at 07:37 AM

DaveFP
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p.27 #9 · p.27 #9 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Mar 26, 2021 at 07:40 AM

6683
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p.27 #10 · p.27 #10 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Sony had said in an interview that they want to develop lenses for a7C line. Its a sharp move, as it will destroy APSc, M43 etc. Sony has achieved great success with a6000, which has been top of the chart for years. This a7C will be sold cheap in years to come when a7CII and III will be in the shelves and it will be considered a great value in Sony line up.
I am very interested in an ultra wide zoom and a tele zoom of great quality and diminutive size. Everyone benefits because lenses are designed for a7C line but they work on all cameras.

Mar 26, 2021 at 08:33 AM

DaveFP
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p.27 #11 · p.27 #11 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

6683 wrote:
Sony had said in an interview that they want to develop lenses for a7C line. Its a sharp move, as it will destroy APSc, M43 etc. Sony has achieved great success with a6000, which has been top of the chart for years. This a7C will be sold cheap in years to come when a7CII and III will be in the shelves and it will be considered a great value in Sony line up.
I am very interested in an ultra wide zoom and a tele zoom of great quality and diminutive size. Everyone benefits because lenses are designed for a7C...Show more →

Diminish those markets? Possibly.

Destroy? Doubtful.

Mar 26, 2021 at 09:36 AM

GMPhotography
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p.27 #12 · p.27 #12 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Petegh wrote:
Lloyd Chambers has manually corrected the Sony 24mm f2.8 distortion on his blog today, and confirms, that there are 'major losses of sharpness particularly in the outer zones' as a result
https://diglloyd.com/blog-30.html

I don’t need Lloyd to tell me that it’s pretty freaking obvious that distortion equals junk, save your cash on that 24

Mar 26, 2021 at 10:01 AM

jhinkey
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p.27 #13 · p.27 #13 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Just placed my order for the 40/2.5G (at B&H through the FM link) and we'll see how well that stands up to the 35/2.8 Sony.

I need to sell a couple of m43 bodies (and maybe some lenses) to fund the A7C.

- J

Mar 26, 2021 at 02:22 PM

ggweci
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p.27 #14 · p.27 #14 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

jhinkey wrote:
Just placed my order for the 40/2.5G (at B&H through the FM link) and we'll see how well that stands up to the 35/2.8 Sony.
- J

This is a comparison I’m interested in. I currently have the Zony 35, and 55, and am considering replacing the 35, or perhaps both, with the 40G.

Mar 26, 2021 at 08:10 PM

Eruditass
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p.27 #15 · p.27 #15 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

chez wrote:
Don't think it has anything to do with 3rd party lenses. I think these lenses were always part of the A7C roadmap. A light setup that basically replaces the need for APS-C system.

Didn't mean to imply they are doing it in response. I felt it was always Sony's goal with e-mount, it just took then so long that others started filling that original vision.

Mar 26, 2021 at 10:48 PM

Petegh
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p.27 #16 · p.27 #16 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

GMPhotography wrote:
I don’t need Lloyd to tell me that it’s pretty freaking obvious that distortion equals junk, save your cash on that 24

I don't know about you Guy, but I've never come across a 24mm f2.8 lens that gets worse in the corners on stopping down: there's more going on here than simple software distortion correction. Lentip suggested it might be worsening LACA, but I'm not buying that, as this should be easily software corrected; there is the possibility, I spose, that there is a bug in Sony's LACA profile for the lens. Regardless of what it turns out to be, some real-world field testing is warranted in this case - and Lloyd is one of the best around for that.

Mar 27, 2021 at 08:41 AM

bjornthun
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p.27 #17 · p.27 #17 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Petegh wrote:
I don't know about you Guy, but I've never come across a 24mm f2.8 lens that gets worse in the corners on stopping down: there's more going on here than simple software distortion correction. Lentip suggested it might be worsening LACA, but I'm not buying that, as this should be easily software corrected; there is the possibility, I spose, that there is a bug in Sony's LACA profile for the lens. Regardless of what it turns out to be, some real-world field testing is warranted in this case - and Lloyd is one of the best around for that.

Lenstip tests are based on raw files, which means that LaCA is uncorrected during testing, as I understand it. I think MTF will increase if LaCA is corrected before testing MTF. Please correct me if I’ve misunderstood something here.

It would be interesting if Lenstip could provide MTF both begore and after correction of distortion as well as LaCA, so that the effect of each could be discerned.

Mar 27, 2021 at 09:01 AM

Steve Spencer
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p.27 #18 · p.27 #18 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Eruditass wrote:
Didn't mean to imply they are doing it in response. I felt it was always Sony's goal with e-mount, it just took then so long that others started filling that original vision.

I think Sony and Sigma have similar goals here. Sigma is designing lenses with the FP camera in mind which is of course a very small camera, and these lenses happen to work well for Sony too. Sony is developing lenses for their A7c camera, which is a small camera too. So perhaps it isn't shocking they are making similar lenses. Now was the Sony A7c partly brought to market as a response to the Sigma FP, perhaps, but I don't think we will ever know.

Mar 27, 2021 at 11:26 AM

Steve Spencer
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p.27 #19 · p.27 #19 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Petegh wrote:
I don't know about you Guy, but I've never come across a 24mm f2.8 lens that gets worse in the corners on stopping down: there's more going on here than simple software distortion correction. Lentip suggested it might be worsening LACA, but I'm not buying that, as this should be easily software corrected; there is the possibility, I spose, that there is a bug in Sony's LACA profile for the lens. Regardless of what it turns out to be, some real-world field testing is warranted in this case - and Lloyd is one of the best around for that.

That is an example where Lenstip offers an explanation that is almost certainly wrong. Lateral CA does not reduce as the aperture gets narrow, but it doesn't increase either. Lateral CA is unaffected by aperture as it occurs on the focus plane. Lenstip's explanation there is nonsense. If I had to guess it is worsening astigmatism that is causing the poor performance as the lens stops down, but that is a guess. You can't tell from the tests that Lenstip does.

Mar 27, 2021 at 11:30 AM

tzhang4284
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p.27 #20 · p.27 #20 · Pre-order Sony G lenses: FE 24mm f/2.8, 40mm f/2.5, 50mm f/2.5

Steve Spencer wrote:
I think Sony and Sigma have similar goals here. Sigma is designing lenses with the FP camera in mind which is of course a very small camera, and these lenses happen to work well for Sony too. Sony is developing lenses for their A7c camera, which is a small camera too. So perhaps it isn't shocking they are making similar lenses. Now was the Sony A7c partly brought to market as a response to the Sigma FP, perhaps, but I don't think we will ever know.

I don’t think Sony remotely cares about the sigma fp. even their ceo says the fp isn’t a major seller and they sell far more lenses on e mount than l mount.

I’m sure some version of the a7c was always in their back pocket. Let’s not forget that Sony had a small lens with a digital aperture ring with the Rx1 (2012), created the a6000 form factor around (2013/2014), and came out with a full frame sensor that can fit that chassis in 2012 as well. This is all tech Sony long had and just needed to refine over time.

Mar 27, 2021 at 01:10 PM

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