The choice of multi-faceted all-around hooking Canon RF24-105mm F4-7.1IS STM measured
Talking about the 24-105mm focal length lens, the first thing you think of is the EF24-105mmf/4LISUSM. This is a very classic red circle L head, which has Practical focal length and excellent portability, the later EF24-105mmf/3.5-5.6ISSTM lens provides users with more choices. With the introduction of the RF system, the classic 24-105mm lens has been updated again. This time we will be evaluating the RF24-105mmF4-7.1ISSTM lens on the RF mount.
With the launch of Canon EOSRF mount micro system, although There is already an RF24-105mmF4LISUSM lens, but it is obviously not enough for those users who have higher requirements for volume and also want to have a more cost-effective lens. In February of this year, Canon launched the RF mount RF24-105mmF4-7.1ISSTM lens, the official guide price of this lens is 2,999 yuan, which has a very obvious advantage in price.
Canon RF24- 105mmF4-7.1ISSTM lens parameters
This lens is also used on the outer packaging In addition to the common design language of Canon RF mount lenses, there is a large RF logo on the packaging box, and the lens model is marked, and the side of the product has an identity photo. However, due to the introduction of this lens positioning, only the lens body, lens front and rear cover, manual and warranty card are in the box.
Canon RF24- 105mmF4-7.1ISSTM lens front
Canon RF24-105mmF4-7.1ISSTM This lens still adopts the appearance of the RF lens family, and the surface adopts a good-feeling matte Painted, the tail is a silver decorative ring, and the front of the lens is a silver ring.
Canon RF24- Side of 105mmF4-7.1ISSTM lens
This lens has a large-area focusing ring, which ensures a good grip, moderate rotation damping, and the lens will not slip off The phenomenon. In addition, this lens also uses a switchable focus/control ring. In addition to the anti-shake mode switch, the left side of the lens body is a function switch. When the switch position is FOCUS, it is the traditional focus ring, and when it is switched to CONTROL, it is the control ring on the Canon RF lens, which can quickly switch some parameters including ISO and aperture.
Canon RF24- 105mmF4-7.1ISSTM front lens group
Canon RF24-105mmF4-7.1ISSTM lens rear lens group
The filter size of this lens is 67mm, and the front lens group has a yellow-green Coating, and the bayonet at the rear of the lens has not shrunk due to its positioning entry. It still uses a metal bayonet design to ensure durability.
Canon RF24- 105mmF4LISUSM vs. Canon RF24-105mmF4-7.1ISSTM
Canon RF24-105mmF4LISUSM vs. Canon RF24-105mmF4-7.1ISSTM
The two brothers Canon RF24-105mmF4-7.1 and RF24-105mmF4LISUSM When comparing the lenses together, it is obvious that the former is one size smaller than the latter. This RF24-105mmF4-7.1ISSTM lens weighs only 395 grams, which is comparable to the weight of a bottle of mineral water. With a lightweight and compact body like EOSRP, its total weight is only about 880 grams, which is very light.
Canon RF24- 105mmF4-7.1ISSTM with EOSRP body
Canon RF24-105mmF4-7.1ISSTM with EOSRP body
Closest focusing distance indicator
As mentioned in the table above, this lens has a minimum focusing distance of 0.2 meters under the wide-angle end autofocus, manual focus When it is 0.13 meters, and the closest focusing distance at the telephoto end is 0.34 meters, it has a certain close-up ability.
zoom ring and Multi-function control ring
All in all, the Canon RF24-105mmF4-7.1ISSTM lens has excellent performance in terms of size and weight. Let’s take a look at how this lens performs at the image quality level.
lens resolution test
In the resolution test, with RF24-105mmF4-7.1 The body of the ISSTM lens is Canon EOSRP with 26.2 million pixels. This lens will also become a set of EOSRP lenses in the future. Many people pay much attention to the aperture setting of this lens F4-7.1. First of all, we show how the image quality of this lens is at various apertures by shooting samples of the same scene with different apertures.
is in the testing phase , I shot the performance of various levels of aperture at both ends of 24mm and 105mm respectively. Starting from the 24mm end, the image quality at the center at the maximum aperture is acceptable, while the edge image quality appears a bit loose. When the aperture is reduced by one stop, there is a significant improvement. When the aperture is f/8, the image quality Best, the diffraction problem caused by the subsequent shrinking of the aperture still has a more obvious impact on the image quality.
at 105mm end When the aperture is fully opened, both the center image quality and the edge image quality have a good performance. With the aperture shrinking to f/11, the center and edge image quality has been greatly improved. Later, due to the diffraction problem caused by the small aperture, the image quality has declined. In general, Canon’s RF24-105mmF4-7.1ISSTM lens is very usable when it is fully opened. If you have higher requirements for image quality, you only need to shrink the aperture slightly.
Vignette and distortion test
Now, distortion and vignetting are not special A big problem, because it can be perfectly corrected by the later software, and for this lens, a smaller aperture will also have certain advantages, but for the overall quality of a lens, distortion and vignetting are It is the two indicators we measure a lens, so for the Canon RF24-105mmF4-7.1ISSTM lens, I also specifically tested its vignetting and distortion.
24mm end dark Angular performance
105mm End vignetting performance
During the vignetting test, we still used the Canon EOSRP body and turned off the lens optimization function in the body. In terms of vignetting performance, according to our actual screenshots, there is a slight vignetting at F4 at the 24mm end, but there is almost no vignetting after the aperture is reduced by one stop, and there is almost no vignetting at the 105mm end.
24mm end distortion Effect
105mm end Distortion effect
The first thing to mention is that when the Canon EOSRP body is paired with an RF24-105mmF4-7.1ISSTM lens, the distortion correction function on the body cannot be turned off. From the actual shooting effect, when the focusing distance is about 1.5 meters, the distortion of this lens is not obvious whether it is at the wide-angle end or the telephoto end.
dispersion blur test
Canon RF24-105mmF4-7.1 This lens uses 11 With 13 elements in the optical structure, including 1 aspherical lens, what about the performance of dispersion and background blur? We will show it to everyone through actual shooting.
24mm end virtual化
105mm end Blur
When shooting, I set the focus distance to the closest end to get the maximum blur performance. It’s worth mentioning that at the 24mm end, This lens can achieve a minimum focusing distance of 13cm under manual focus, so the blur effect presented at the 24mm end is more significant. On the whole, the Canon RF24-105mmF4-7.1 lens may be a bit less interesting in terms of blurring effect due to its slightly smaller aperture, but from the perspective of a lens at this price, it is generally good.
The capture area
Dispersion meter reality Shoot
24mm end Axial dispersion performance at f/4
105mm end f/7.1 axial dispersion performance
In terms of dispersion performance, I use the maximum in a scene with a larger light ratio Aperture shooting, and 100% interception. Through actual shooting, we found that at the maximum aperture, the dispersion control is very good, the dispersion is very slight, and there is almost no purple or green fringe visible to the naked eye. In terms of axial dispersion, this lens has no obvious axial dispersion.
More samples and summary
The focal length of Canon RF24-105mmF4-7.1ISSTM is covered There are multiple common focal lengths from wide-angle to medium-telephoto, which is very convenient for traveling or daily shooting. Such focal lengths don’t require frequent lens changes. So what is the actual performance of this lens? Let’s take a look together.
Focal length: 24mm Aperture: f/8.0 ISO sensitivity: 100 Exposure time: 1/250s Exposure compensation: 0EV White balance: Auto
focal length: 24mm aperture: f/4.0 ISO sensitivity: 100 exposure time: 1/2500s exposure compensation: -0.7EV white balance: automatic
Focal length: 90mm Aperture: f/7.1 ISO sensitivity: 3200 Exposure time: 1/50s Exposure compensation: 0.3EV White balance: Auto
Focal length: 24mm Aperture: f/4.0 ISO sensitivity: 320 Exposure time: 1/40s Exposure compensation: -0.7EV White balance: Automatic
Focal length: 105mm Aperture: f/7.1 ISO sensitivity: 125 Exposure time: 1/60s Exposure compensation: -0.7EV White balance: Auto
Focal length: 40mm Aperture: f/5.0 ISO sensitivity: 100 Exposure time: 1/100s Exposure compensation: 0EV White balance: Auto
focal length: 105mm aperture: f/7.1 ISO sensitivity: 100 exposure time: 1/800s exposure compensation: -1.0EV White Balance: Automatic
focal length: 82mm aperture: f/7.1 ISO sensitivity: 100 exposure time: 1/80s exposure compensation: 0EV white balance: automatic
focal length: 24mm aperture: f/9.0 ISO sensitivity: 800 exposure time: 1/30s exposure compensation: 0.3EV White Balance: Auto
Focal length: 44mm Aperture: f/9.0 ISO sensitivity: 100 Exposure time: 1/80s Exposure compensation: -1.3EV White balance: Auto
Focal length: 50mm aperture: f/6.3 ISO sensitivity: 100 exposure time: 1/100s exposure compensation ：0EV White balance: Auto
Focal length: 24mm Aperture: f/4.0 ISO sensitivity: 320 Exposure time: 1/30s Exposure compensation: 0EV White balance: Automatic
Focal length: 24mm Aperture: f/11.0 ISO sensitivity: 160 Exposure time: 16/10s Exposure compensation: -1.3EV White balance: Auto
At the beginning of this year, Canon announced that it will bring multiple RF mounts this year The new lens, the RF24-105mmF4-7.1ISSTM lens we reviewed this time is one of them. For this lens, the biggest controversy still lies in the setting of the aperture value. In the actual experience, especially at the telephoto end, the light requirements for dark scenes are indeed higher. However, from our testing and actual experience, a smaller aperture has a great advantage in volume and weight control on the one hand, and in the blur effect that many people care about, this lens also has a relatively good performance. . The focal length of 24-105mm covers several commonly used focal lengths, which can meet the needs of most people. The lead screw STM stepping motor has a fast and quiet focusing experience both in video shooting and photo shooting. In addition, the closest focusing distance of this lens under autofocus is 0.2 meters, and the closest focusing distance under manual focus is 0.13 meters, and it has a certain close-up capability. Canon’s official guide price for this lens is currently 2999 yuan, and the actual market price may be lower. With a body like EOSRP, it is obviously more friendly to entry-level users with limited budgets.
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