Is it worth buying the Sigma 18-35 for a Canon 250D

[waxonupto]

Here is the full situation:

I am doing YouTube videos in my home studio. and currently have an EOS 250D but im using my iPhone 16 pro max due to the stock DSLR lens that comes with the 250D is not the best.

Im setting around 2-3 feet from the camera.
my background is around 10 feet from me.

Im looking to get a good image with a proper depth of field.

I'm also using the Elgato Prompter "so the focus motor being inside the lens is a must".

Did a bit of research and found that the famous Sigma 18-35 MM is the best option, but I want your expertise to see if this is the best bang for buck or of there something else.

The requirement is to get a proper depth of field in small areas. The lens should be in the middle of the road of width.

or is it better to get another camera entirely "in case the price is the same as the lens and the stock lens is good enough".

[stevet1]

waxonupto,

Here is an article about Canon's lens focusing systems. It might help you in making your lens choice:

https://www.canonrumors.com/canon-focus-motor-technology-through-the-ages/

Steve Thomas

[normadel]

What does "proper depth of field" mean? You and the background in focus?

Bear in mind that an 18-35mm focal length will translate to 28-56mm field-of-view on your crop-sensor camera.

Have you looked at the Canon EF-S 10-18mm f/4.5-5.6 IS STM?  It's a very good lens and can be had reasonably from used photo dealers Like MPB.com, KEH.com, etc.. New also.

The Sigma Art 18-35 is a lot of money. You can get The Canon EF 16-35 or EF 17-40 on the used market  for lots less.

[kvbarkley]

F/1.8 is pretty far from F/4.5-5.6, especially if you want narrow depth of field.

[shadowsports]

Greetings,

For product demos or vlogging, the Sigma Art is an excellent choice.  This would be especially true if you are not constantly varying the distance between your subject and the camera.

The camera should be able to maintain accurate focus.  Here are some thoughts.  At approx 3ft. Shooting at approx 35mm focal length should allow you to compose and frame yourself or subject pretty well.  If you shoot at f1.8 the DOF will be shallow and your background will be greatly blurred.  

If you shoot at a higher aperture f4 and above your background will be blurry but some items may be more distinct (less bokeh) even at 10 ft.  

As mentioned previously, you do need to take into account the crop If using a full frame lens on an APS-C sensor.  The constant f1.8 aperture of the sigma lens will do very well in low light.  The 250D/SL3 has a Digic 8 chip.  It's 9 point AF is its weakest attribute.  

I definitely agree with the recommendation of buying EF lenses used.  I would not invest in any EF glass new.  The Canon EF-S 10-18 is a great budget friendly video lens for an APS-C sensor.  It might be a little wide depending on the degree of subject detail you're looking for.  I think it's f4.5~5.6 so it's not going to give you as much background blur as the Sigma.  Either lens can work.  It really depends on how much detail you're looking to achieve in your videos.