Sigma 18-35 f1.8 review

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[TonyAndChelsea]

Redzo79 Your misunderstanding is a common one, though your attitude could be nicer. I'll have a video out tomorrow that will clarify it for you.

Obviously the light per square inch is the same, but smaller sensors have fewer square inches... so the light per pixel (given the same number of pixels) is lower, and light per pixel is the biggest factor in image noise.

[PauloMiguelLarracas]

I thought I was watching Dr. Strange reviewing a lens in 2019.

[jonesey]

I generally learn something from your videos, but this time, I REALLY learned something important I did not know before.  That is that you also have to multiply the Aperture as well as the focal length.  I've watched many, many instructional videos, and you are the first one who has pointed this out.

Thank you; for the tips, and the hard work you and Chelsea and crew put into these.

[davidduffy]

Tony, many thanks for this excellent review of the Sigma 18-35mm. Last weekend I purchased a Nikon D7200, I am visually impaired (aka blind) though I still have useful vision. I have been ruminating over what lens to pair with the D7200 and your review makes it clear a marriage between the D7200 and the Sigma 18-35 would be a perfect match.
If your wondering why a visually impair person would buy a camera as expencive as the D7200, the answer if WiFi. Using live view and Dashboard my focusing and framing view become the size of my monitor 23" ! So as crazy as it seems, that a white cane user would be behind a camera, the brilliant tech that's feeding through photography make "blind photography" possible!
Again many thanks for your review and this coming weekend I will be purchasing a Sigma 18-35.
Cheers
David

[KocaMetallec]

GREAT review!
I'm just wandering how this lens compare to the Sigma 35 f/1.4 A in terms of image quality and sharpness> ?

[JonPaulKersey]

Man you are the the most amazing photography person on YouTube. I learn from you in every video. I love love love your content. Thanks Guys!

[nikosadie]

I got this lens at a really good price and I love it. I mainly got it for astrophotography. At 18mm (29mm Equivalent) it is just wide enough to get decent landscape shots of the milky way. At 35mm (56mm Equivalent) it works really great in portrait mode for shooting panoramas of the night sky. The main thing is the f1.8. It lets in a ton of light so I can speed up my shutter a bit and avoid star trails or I can lower my ISO for less noise. I have taken a few normal landscape shots and it is quite sharp. It is quite heavy for a crop sensor camera use and there is a tiny bit of focus noise, but I do not shoot video and if I did, I would probably use off-camera audio. The lack of IS is not an issue, since I usually shoot wide and since the lens is so heavy, it tends to be a bit more stable and the wide aperture lets you use faster shutter speeds. Build quality is brilliant. The short focal range could be an issue for some but if it works for you then this is a great lens.

[TonyAndChelsea]

+bash5995, you only need to use the crop factor for the focal length and aperture when comparing it to lenses designed for other sensor sizes, such as full-frame lenses.

[valentinheimhuber]

Great fully professional review, thanks! The only review of this lens that acknowledges that you are actually getting an aperture of around 2.8, rather than 1.8 at fully open. Crazy that none of the dozens of other reviews on youtube talk about this.

[moviewatcher]

Tony FYI - the aperture of a lens does not change with sensor size. So if you have a 2.8 lens on a FF body you still have a 2.8 lens on a DX body. Only the effective focal length and FOV changes. Please make a note of this.

[Macsnapshot]

One of the reason I always come back to your reviews Tony is that you are not bias and not pro selling in favour for the camera & lens industry . Too many reviews done by photographers on Youtube to promote their products for promotions. I love your vids . You are both beautiful . Thank you for all the info . I learned a lot from you both !! :)

[thinhvcoin]

Your wish came true I think, Sigma just introduced the 50-100 F1.8, not quite 70-200 but omg look at that aperture. Do look forward to see your review on that lens

[Kadacha]

I love how excited you look when you talk about cameras. Thanks again for all your work!

[DeyvsonMoutinhoCaliman]

I can't believe it is a true f/1.8 for APS-C, this lens is like a dream. I saw this video years ago, but I couldn't appreciate at the time how good this lens is.

[TechHints]

Watching the video after 7 years, still makes sense though. Going to buy this lens. Thanks Tony for such a detailed review 😊

[higgenbotham]

I completely agree with you, Sigma should come out with a f/1.8 50-150 Sport lens so APS-C cameras can shoot pro level portraits. I am hoping that Sigma's discontinuing of the 50-150mm f/2.8 earlier this year means they are going to make a new one in their S sports lens lineup. Hopefully we will see it in photokina in a few weeks. 

[davidmorrie]

I understand this isn't a portrait lens but I'm sure at 35mm (x1.6) 56mm wouldn't be that bad as some people use 50mm for portraits. I just bought this lens more for video but just every day shooting as well.

[TimothyGoetz]

OK. Just got this lens today. Been using it for about an hour. Would it be ridiculous for me to say I'll never pay for another Cannon lens again?  This is my first "non kit" lens purchase so maybe my point of reference is weak. Love this thing! Thanks Tony!

[MarkNiceyard]

Yeah, that's a very nice lens. I sporadicly shoot with it on my 70D on family events and I love it. It's just so fast at dim light I don't need no flash. Great development by Sigma!

[MrTacticalinuit]

Am I the only one who thinks vignetting can look pleasing?