The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 17-70 F2.8 Di III-A VC and the Sigma 24-70 F2.8 DG DN Art for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sigma 24-70 F2.8 DG DN Art is the longer of the two lenses at 123mm. The Tamron 17-70 F2.8 Di III-A VC with a length of 119mm, is 4mm shorter. Besides being longer, the Sigma 24-70 F2.8 DG DN Art also has a larger diameter of 88mm compared to the Tamron 17-70 F2.8 Di III-A VC's 75mm diameter.
Below you can find a scaled side-by-side image of Tamron 17-70 F2.8 Di III-A VC and Sigma 24-70 F2.8 DG DN Art to get a better idea of how their sizes compare in real life.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Tamron 17-70 F2.8 Di III-A VC weighs 525g, which means it is 310g [37%] lighter than the Sigma 24-70 F2.8 DG DN Art which has a weight of 835g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Sony E Mount for size comparison purposes.
Sigma recently launched their new 24-70 F2.8 DG DN Art lens designed for mirrorless cameras, so now Alpha Shooters looking for a fast f/2.8 24-70 zoom lens now have a choice between the new Sigma lens, the Tamron 28-75mm F2.8 Di III RXD or Sony’s own FE 24-70mm F2.8 GM lens.
Thankfully Gerald Undone has already done the hard work by comparing all three lenses in this excellent video comparison.
The following is a summary of his video:
The Tamron is the cheapest of the three lenses and it’s also the smallest and lightest weighing in at 577g. The Sigma is noticeably heavier than the Tamron at 852g but is still the same height when retracted at 70mm. The Sony G Master is the heaviest of the three and weights 922g, it is also the most expensive lens in this comparison.
The price that you pay is reflected in the build quality as the Tamron feels cheaper to hold than both the Sigma and Sony and it is also missing the useful customizable function buttons. The focus and zoom rings are also not dampened. Both the Sigma and the Sony make no sacrifices when it comes to build quality and functions, they are definitely built better than the Tamron.
The Sigma has the smoothest focus ring of the three and also the largest throw that makes focus pulls for video much smoother.
All three lenses present very minimal distortion at their respective wide-ends and are distortion free by 35mm. The Sigma has the shortest minimum focus distance at 24mm of just 18cm compared with 19cm for the Tamron and 38cm for the Sony, although the Sony is the only lens with a constant minimum focus distance while both the Tamron and Sigma are variable.
When it comes to the autofocus all three lenses focus very quickly but the Sony had the highest number of keepers in Gerald’s tests at 88%, closely followed by the Tamron at 82% then the Sigma at 77%, all tests were done on his Sony a7III.
All three lenses are very sharp but from Gerald’s tests it appears that the Sigma is the sharper lens in the center and the Sony is sharper around the edges of the frame, the Tamron comes slightly behind both lenses for both central and edge sharpness.
The Sony has the best control over vignetting when shooting wide-open, followed by the Tamron then the Sigma but by 50mm you don’t see any difference. The Sigma however performed best when it came to fringing control, followed by the Sony then the Tamron.
As for the bokeh it looks like the Sigma is the winner here with the smoothest and roundest bokeh balls followed by the Sony then the Tamron, of course bokeh is always a very subjective subject.
The Sony G Master has the best flare resistance, followed by the Sigma then the Tamron.
If you are looking for a fast f/2.8 standard zoom lens then you now have three great lenses to choose from.
If autofocus is very important to you then the Sony is probably still the best choice for now, otherwise the Sigma is most definitely the best buy. However, if you want the lightest travel friendly lens and don’t mind sacrificing a little build quality then it’s unlikely that you will be disappointed by the Tamron.
Do you plan to add one of these lenses to your gear bag? It would be great to hear which one in the comments below.
You should never trust individual reviews. You need to watch or read several different sources if you want to get a good overview of what people think.
Ricoh GR III Sony a7R IV Fujifilm GFX 100S Fujifilm GF 100-200mm F5.6 Sigma 24-70 F2.8 DG DN +19 more
101Colors • Contributing Member • Posts: 504
Re: Tamron 28-75 G2 vs Sigma 24 -70
IF you have to ask this question, then I would suggest that you do NOT trust that review, because this makes me think you have some reservations about believing it...
No one can know the intention, bias[es], competence, business connections, or true purpose of this [ or ANY] 'review'....
With the rise of paid influencers, there are some cleverly disguised 'ads' that show up here in the message forums as well.. Lately, quite a few... The ignore button here works well.
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
Thank
-- hide signature --
//////// Sometimes it's better to be kind than to be right. \\\\\\\
Nikon Z7 Nikon Z 24-70mm F4 Nikon Z 50mm F1.8 Nikon Z 14-30mm F4 Nikon Z 24-200mm F4-6.3 VR
[unknown member] • Senior Member • Posts: 1,941
Re: Tamron 28-75 G2 vs Sigma 24 -70
101Colors wrote: IF you have to ask this question, then I would suggest that you do NOT trust that review, because this makes me think you have some reservations about believing it...
the fact is that you cant get a better zoom at that length than the Tamron g2, it is excellent on all aspects.
No one can know the intention, bias[es], competence, business connections, or true purpose of this [ or ANY] 'review'....With the rise of paid influencers, there are some cleverly disguised 'ads' that show up here in the message forums as well.. Lately, quite a few... The ignore button here works well.
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
Thank
-- hide signature --
The confusion starts when the scientists can't agree amongst themselves. Henry F
101Colors • Contributing Member • Posts: 504
Re: Tamron 28-75 G2 vs Sigma 24 -70
Understood Dspider.
Fact ? well I don't own either of those lenses. Some seem to favor the Sigma so until I can test both myself, I'm still calling it an opinion.. With all the generally positive reviews and opinions of the G2 vs the Sigma expressed here and all over the net, my question was why the OP questioned that particular review/reviewer ?
Maybe the OP can explain..
Dspider wrote:101Colors wrote: IF you have to ask this question, then I would suggest that you do NOT trust that review, because this makes me think you have some reservations about believing it...the fact is that you cant get a better zoom at that length than the Tamron g2, it is excellent on all aspects.
No one can know the intention, bias[es], competence, business connections, or true purpose of this [ or ANY] 'review'....With the rise of paid influencers, there are some cleverly disguised 'ads' that show up here in the message forums as well.. Lately, quite a few... The ignore button here works well.
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
Thank
-- hide signature --
//////// Sometimes it's better to be kind than to be right. \\\\\\\
Nikon Z7 Nikon Z 24-70mm F4 Nikon Z 50mm F1.8 Nikon Z 14-30mm F4 Nikon Z 24-200mm F4-6.3 VR
Jostian • Veteran Member • Posts: 4,893
Re: Tamron 28-75 G2 vs Sigma 24 -70
101Colors wrote:Understood Dspider.
Fact ? well I don't own either of those lenses. Some seem to favor the Sigma so until I can test both myself, I'm still calling it an opinion.. With all the generally positive reviews and opinions of the G2 vs the Sigma expressed here and all over the net, my question was why the OP questioned that particular review/reviewer ?
Maybe the OP can explain..
Dspider wrote:101Colors wrote: IF you have to ask this question, then I would suggest that you do NOT trust that review, because this makes me think you have some reservations about believing it...the fact is that you cant get a better zoom at that length than the Tamron g2, it is excellent on all aspects.
No one can know the intention, bias[es], competence, business connections, or true purpose of this [ or ANY] 'review'....With the rise of paid influencers, there are some cleverly disguised 'ads' that show up here in the message forums as well.. Lately, quite a few... The ignore button here works well.
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
Thank
G2 is awesome IMHO, but the weather sealing is the big plus vs the Sigma.
stativ • Junior Member • Posts: 28
Re: Tamron 28-75 G2 vs Sigma 24 -70
1
I we read and watched many reviews before going to buy standard zoom. I was considering pretty much all options available at that time, which were Sigma 24-70, Sony 24-70 GM, Sigma 28-70 and Tamron 28-75 G2.
It turns out, each lens has some strengths and weaknesses. Some of the differences may be attributed to a specific unit [ie. someone may have gotten exceptionally good Sigma and exceptionally bad Tamron].
According to the reviews, Sigma 24-70 has exceptionally low amount of CA, OTOH Tamron was worst regarding CA.
Regarding sharpness, all of these lenses are exceptionally sharp, some having edge on short end, some on long end, some have better center, some better corners.
In the end, I decided to buy the Tamron especially because of it's small size and weight and I'm really happy with the lens. The only thing that I wish was better was the flare resistance.
Alpha user • Senior Member • Posts: 4,045
Re: Tamron 28-75 G2 vs Sigma 24 -70
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
Thank
If you are happy with the weight/size of the 24-70, its a better choice imo. I don't like the hard stop at 28 either on the way down or up on these x -28- x zooms, but while a uwa with 28max makes a good companion for a 24 to x zoom with some 4mm overlap, it feels frustrating having no overlap at all. Some people find they need nothing wider than 24mm and will probably be best served with a small wide prime for anything wider but I do find all 28 to x zooms whilst in the main optically excellent limited on the wide end.
Sony a1 Sony FE 200-600 F5.6-6.3 Sony FE 35mm F1.8 Samyang AF 75mm F1.8 FE Sigma 28-70mm F2.8 DG DN +4 more
Alpha user • Senior Member • Posts: 4,045
Re: Tamron 28-75 G2 vs Sigma 24 -70
In reply to Jostian • Jul 25, 2022
Jostian wrote:101Colors wrote:G2 is awesome IMHO, but the weather sealing is the big plus vs the Sigma.Understood Dspider.
Fact ? well I don't own either of those lenses. Some seem to favor the Sigma so until I can test both myself, I'm still calling it an opinion.. With all the generally positive reviews and opinions of the G2 vs the Sigma expressed here and all over the net, my question was why the OP questioned that particular review/reviewer ?
Maybe the OP can explain..
Dspider wrote:101Colors wrote: IF you have to ask this question, then I would suggest that you do NOT trust that review, because this makes me think you have some reservations about believing it...the fact is that you cant get a better zoom at that length than the Tamron g2, it is excellent on all aspects.
No one can know the intention, bias[es], competence, business connections, or true purpose of this [ or ANY] 'review'....With the rise of paid influencers, there are some cleverly disguised 'ads' that show up here in the message forums as well.. Lately, quite a few... The ignore button here works well.
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
Thank
The Sigma has a gasket at the lens mount and a diagram from Sigma reveals that there are a total of 8 seal points throughout the lens, including at the rings and switches!
Not sure which Sigma you are thinking about, 28-70? but the 24-70 is a very high grade lens, probably far higher than the Tamron G2 28-75 imo.
Sony a1 Sony FE 200-600 F5.6-6.3 Sony FE 35mm F1.8 Samyang AF 75mm F1.8 FE Sigma 28-70mm F2.8 DG DN +4 more
tqlla • Veteran Member • Posts: 6,580
Re: Tamron 28-75 G2 vs Sigma 24 -70
Having a 24mm field of view is a large advantage over a 28mm lens. If you use 24mm often, then the Sigma is better than the Tamron.
Sony RX1R II Sony a7R III Sony 135mm F1.8 ZA Carl Zeiss Sonnar T* Zeiss Batis 85mm F1.8 Sigma 24-70 F2.8 DG DN
Jostian • Veteran Member • Posts: 4,893
Re: Tamron 28-75 G2 vs Sigma 24 -70
And-roid wrote:Jostian wrote:101Colors wrote:G2 is awesome IMHO, but the weather sealing is the big plus vs the Sigma.Understood Dspider.
Fact ? well I don't own either of those lenses. Some seem to favor the Sigma so until I can test both myself, I'm still calling it an opinion.. With all the generally positive reviews and opinions of the G2 vs the Sigma expressed here and all over the net, my question was why the OP questioned that particular review/reviewer ?
Maybe the OP can explain..
Dspider wrote:101Colors wrote: IF you have to ask this question, then I would suggest that you do NOT trust that review, because this makes me think you have some reservations about believing it...the fact is that you cant get a better zoom at that length than the Tamron g2, it is excellent on all aspects.
No one can know the intention, bias[es], competence, business connections, or true purpose of this [ or ANY] 'review'....With the rise of paid influencers, there are some cleverly disguised 'ads' that show up here in the message forums as well.. Lately, quite a few... The ignore button here works well.
rainydiary wrote:Hi all
In this review Tamron 28-75 G2 is better than Sigma 24-70.
//youtu.be/J54XGlBKt9k
Could we trusted the review ?
ThankThe Sigma has a gasket at the lens mount and a diagram from Sigma reveals that there are a total of 8 seal points throughout the lens, including at the rings and switches!
Not sure which Sigma you are thinking about, 28-70? but the 24-70 is a very high grade lens, probably far higher than the Tamron G2 28-75 imo.
Apologies, my mistake, was the 28 70 I was thinking of, my bad.
Keyboard shortcuts:
FForum MMy threads
You may also like
Latest sample galleries
Latest in-depth reviews
The Aura Carver 10.1" HD Digital Frame is a great way to put your portfolio on display and a great way to surface forgotten memories. The colors are vibrant, and the build quality is solid, but the Carver isn't without a few quirks.
With a bigger battery and better video capabilities, the Fujifilm X-S20 could be the vlogging machine content creators have been waiting for.
The Sony a7CR is a high-resolution addition to the company's compact full-frame a7C series. So what did we make of it and where does it leave the a7 IV that it sits just above?
Lomography's LomoChrome '92 is designed to mimic the look of classic drugstore film that used to fill family photo albums. As we discovered, to shoot with it is to embrace the unexpected, from strange color shifts to odd textures and oversized grain.
The LowePro PhotoSport Outdoor is a camera pack for photographers who also need a well-designed daypack for hiking and other outdoor use. If that sounds like you, the PhotoSport Outdoor may be a great choice, but as with any hybrid product, there are a few tradeoffs.
Latest buying guides
If you want a compact camera that produces great quality photos without the hassle of changing lenses, there are plenty of choices available for every budget. Read on to find out which portable enthusiast compacts are our favorites.
What's the best camera for travel? Good travel cameras should be small, versatile, and offer good image quality. In this buying guide we've rounded-up several great cameras for travel and recommended the best.
'What's the best mirrorless camera?' We're glad you asked.
What’s the best camera for around $2000? This price point gives you access to some of the most all-round capable cameras available. Excellent image quality, powerful autofocus and great looking video are the least you can expect. We've picked the models that really stand out.
Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.