10-17-2024 05:05 PM
I'm just perusing the storefront for lenses as I have just acquired a Canon R8. I'm looking at the Canon official lenses there's a 50 mm f 1.8 and a 24 to 105 mm f4 to 7.
Technically the 24 to 105 lens has 50 somewhere in its range, so is there any point in getting the 50 mm?
10-17-2024 05:08 PM
You get the extra stop or so of light gathering, with today's ISO performance, that might not matter much, though you can get thin DOF's.
10-17-2024 07:26 PM
If you are frequently shooting in dark locations and need a 50mm lens, the 50mm f1.8 will be beneficial. According to the specs, the 24-105 f4-f7.1 stm is at f5.6 "best" aperture by 50mm which is a bit over 3 full stops worse than the 50mm f1.8. But if you are primarily shooting in good lighting or using artificial light, then as kv states the other major advantage is the wider aperture of the 50mm fixed is the ability to reduce depth of field often allowing you to blur an undesired background.
I don't necessarily like low light photography but I find myself doing so frequently and have 50 and 85mm f1.2 primes to back up my narrower aperture "zoom" lenses.
Rodger
10-17-2024 07:36 PM
Yes, absolutely, a 24-105 includes the 50mm focal range. The difference is the f/stop.
Really it depends on two things:
What light you shoot in. The f/1.8 will give you a couple of stops of performance improvement in low light - so you can use a lower ISO for less noise, or a higher shutter speed, or a combination of those.
How shallow a DoF you need. The f/1.8 on the 50mm prime will allow you to gain the shallower depth of field that comes with a more open aperture - which might be beneficial for portraits, but the same effect can be achieved by using a longer focal length within the 24-105 range.
There are three things that impact DoF:
The closer the subject, the shallower the DoF
The longer the focal length, the shallower the DoF
The smaller the f/stop value the shallower the DoF.
So, if you change one (like the f/stop) you can compensate by using a different focal length. There are limits to that, and in looking at the 24-105 I would suggest considering the f/4 version for its faster and constant f/stop value.
10-17-2024 11:34 PM - edited 10-17-2024 11:35 PM
sotann,
If you have not used a fast(er) prime lens before, you may enjoy the experience of using a prime lens as well as enjoy the results.
In composition and framing, you “zoom with your feet”. For me it’s a different process and mindset when I use a prime lens and I enjoy that. I also find my consumer (non L) prime lenses are sharper at comparable apertures vs. my consumer zoom lenses and often try to exploit the shallower depth of field I get with larger aperture prime lenses. In other words, I use my prime lens differently than I do zooms even though the focal lengths overlap.
A 50mm f1.8 lens is a relatively inexpensive entry point into prime lenses. Although I have the EF version of that lens, I assume the R version is similar and just as good as the EF version. You may want to give it a try to see for yourself.
Good luck!
LZ
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