Kees Timmer

I tested the sharpness of the RF 24-105mm F4 L, RF 15-35mm F2.8 L and RF 24-240mm F4-6.3 at FL 24mm and aperture f/4.0. My results fully confirm yours: the extreme corners of the RF 24-105mm F4 L ...

According to digital-picture.com there is no significant difference in corner sharpness between 50mm and the other focal lengths at f/2 as tested on the EOS R.

I agree with you about the use of the RF28-70/2L. For event shooting, especially indoors, corner sharpness is irrelevant. Most modern lenses offer an excellent center sharpness stopping down ...

Not according to Tony Northrup: https://www.youtube.com/watch?v=JnFXl56NZCM (8:30 min)

Hi I had a look at your album. Nice shots and IQ seems outstanding. You also own the RF 35mm f/1.8 macro. Is the IQ of this lens comparable to that of the RF 28-70mm at f=35mm?

Hi Kristian, Thank you for posting these images. They look really excellent in terms of sharpness, color and contrast rendition. I am still puzzled about reports concerning weak corner sharpness. ...

The reason is that many reviewers state that the RF 28-70mm is like a bag full of primes. People also talk about "prime-like" quality. I just wonder is this is true. If so, why we should use ...

I am considering to purchase the RF 28-70mm f/2L USM. I read about every review published on the internet. The main selling point of this lens is the f/2 aperture. Therefore, the IQ at f/2 is an ...

I can't. Because as indicated I don't care about IQ differences observed in pixel peeping on a computer screen. I care about differences I see in a 13x19 inch print on the wall. So I am afraid you ...

Let us face it: EF lenses are history at least for photography. I too collected quite a number of EF lenses over de past 20 years which are all excellent lenses. But RF lenses are simply better, ...

You did an impressive amount of testing. Thank you so much for all your useful work. Differences in IQ can be perceived by pixel peeping on a computer screen, but the question remains how relevant ...

I have no comparative images with other types of targets. I agree that this test does not tell the full story. Maybe a subject with a lot of fine details shows a different result. Nevertheless I ...

Dustin Abbott says in this review of this lens: “Not particularly sharp at any focal length”. Since I got the impression that my images with this lens were very sharp, I decided to do some pixel ...

Here are two images to illustrate my point: WB setting = AWB (Ambient Priority) WB setting = Daylight

Hi Phil, I just tested both AWB settings under the same conditions. There is not much of a difference. I also shoot RAW so the WB can easily adjusted in post as you said. So I don't consider this ...

I noticed that AWB under cloudy conditions resulted in images which were too blue. When I set the white balance to "Daylight" or "Cloudy" the colors were correct. Under sunny conditions AWB and ...

Thank you. I found it in the manual under "Shooting with Speedlites" p.166. With a Speedlite mounted on the hot shoe the <*>-button functions as FEL.

Many EOS digital DSLR's have a FEL (Flash Exposure Lock) button indicated by an asterix (*). Using a Canon Speedlite it locks the flash power needed to properly expose the image based on the ...

Yes, you can using the included LN-MBUC-B01 Camera Controle Cable. Don't forget to set the camera to Canon in the gimbal menu. I tested this myself and it worked fine. https://www.youtube.com/watch ...

I have purchased the Weebill S. Tested it today with the R5 and RF 24-105mm. First updated the firmware from 1.96 to 1.98.  As you said: a perfect combo. Balancing was easy. Test footage looked ...