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Canon R100 + Canon RF 24-105mm f/4-7.1 IS STM

ca Offline Chako

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Canon R100 + Canon RF 24-105mm f/4-7.1 IS STM
on: July 22, 2025, 06:55:09 AM
Another sunny day and another brief walk at the local park. Today was my first outing with a new used lens that I found locally off of Amazon marketplace. The seller had it up for 4 weeks and nobody expressed interest in it. When I found out about it, it was already heavily discounted, so I paid 200 Canadian for it which is a great deal consider the seller only used the lens a few times, and she did not care for it. It retails in the 500 dollar range new. Considering I only have the kit 18-45mm and the 800mm lens for these new mirrorless cameras, adding this one to the group seemed to be a smart move, and it was a local pickup.

Anyways, these were taken earlier today with the Canon RF 24-105mm lens on the R100 body. The lens worked great, and there are no issues with it. It appears to have a not bad macro function at 105mm end. I did find it very limiting for wildlife. There were a few times on my brief walk that I wanted more reach. Now this is an RF lens meaning it is designed for full frame cameras. With the crop factor of 1.6X, the lens acts like a 38.4-168mm lens which is a weird focal range. I have a 70-200mm EF lens that I used recently, and found that the converted 112-320mm was perfect for birding up close. I plan on buying an RF 100-400mm lens to fill in the gap for wildlife photography down the road anyways. Still happy with my rather cheap purchase, and there is nothing I can fault the lens for. I am viewing it as more of a landscape general purpose lens. Can't argue with the price.

Now today, I did a silly faux pas. I neglected to set my autofocus to Servo AI, which means that once I press the shutter, the camera does not update the focus on the fly. This explains why my 2 impromptu Pigeon bird in flight shots did not turn out as I would have liked them. It was quick and I am amazed that I was even able to get the bird in frame. I had set the camera to continuous drive...so although the camera took several shots in sequence, it failed to update the focus. I share them here because they are still nice if not as in focus that I would like them to be.

Enough ramblings, and onto today's photos.

The lens is sharp and excels at this type of imagery.
IMG_1198A by Chako, on Flickr

IMG_1206A by Chako, on Flickr

IMG_1215A by Chako, on Flickr

The old power generating plant on the Sault Michigan side.
IMG_1221A by Chako, on Flickr

IMG_1224A by Chako, on Flickr

IMG_1226A by Chako, on Flickr

A bunch of Cobra Chickens relaxing in their natural environment...planning their next victim. :)
IMG_1233A by Chako, on Flickr

They are not that bad. I have never been attacked by one, even though this one was sizing me up.
IMG_1247A by Chako, on Flickr

IMG_1249A by Chako, on Flickr

Pigeons or Rock Doves are very pretty birds, especially if you can get the lighting good to highlight their iridescent plumage.
IMG_1260A by Chako, on Flickr

Not sure what it was today, but the Cobra Chickens all looked at me a bit funny.
IMG_1261A by Chako, on Flickr

Here are my 2 bird in shot flights that could have been a bit better if I had the camera settings correct.
IMG_1273A by Chako, on Flickr

IMG_1274A by Chako, on Flickr


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gb Offline tosh

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Re: Canon R100 + Canon RF 24-105mm f/4-7.1 IS STM
Reply #1 on: September 22, 2025, 03:31:29 PM
Hey Dan
I have the same lens….and if I’m honest I don’t  particularly like it 😬
The 7.1 max aperture is  just appalling for a modern lens.
Instead I now opt for primes
RF16, 28, 50 and 85is (the 24-105 never sees use) With the crop factor that gives 25,45, 80 and 135
Usually I just take two (16 & 80)

It’s odd because I have a few 24-105 both F4 and F5.6 but for some odd reason I hate the slow 7.1 max aperture. It pushes my iso up which then gives noisy images.

I’m surprised you didn’t get the R7 or even the R3/R1 as we all know you. 🤣👍🏻

I had the RP, but I’ve just given it away after I purchased both R100 & R50
Hence I have a lens on each and no swapping when out - the exposed fragile sensor freaks me out. 🫣

Both mine are fitted with the Neewer cage  (Amazon) to me it trumps smallrig as the Neewer has 3point fixing (smallrig has 1). The cage helps ergonomics  with bigger lenses. I have a few  L’s both zooms and primes and with the cage fitted the bigger grip helps on the tiny R50.

I can’t recommend it enough. Incase you didn’t know the cage fits both R50 and R100 hence why I bought those bodies. As for the R100… canons cripple hammer reputation  went too far. The lack of touchscreen  is unforgivable in my view, I can appreciate omitting the swivel screen and disabling  the ability for the body  to utilise the control ring  - which tbh  is just downright  vindictive of canon. But the lack of touchscreen really does ruin the camera and ofcourse the lack of sensor cleaning too!!

Ridiculous

For context I still have the entire inventory of the former canon M system, every model and every lens and canon managed perfectly well to incorporate both touch screen and sensor cleaning on all!!

As a result I’ve now abandoned buying more canon  (after almost 40yrs) I’ll keep what I have but if I need more tech I’m jumping to Nikon…. 👍🏻

« Last Edit: September 22, 2025, 05:51:44 PM by tosh »
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us Offline MadPlumbarian

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Re: Canon R100 + Canon RF 24-105mm f/4-7.1 IS STM
Reply #2 on: September 22, 2025, 05:06:50 PM
Interesting, the kid wants to get into photography, what he wants as far as a camera goes I have no clue..
JR
"The-Mad-Plumbarian" The Punisher Of Pipes!!! JR
As I sit on my Crapper Throne in the Reading Room and explode on the Commode, thinking, how my flush beat John’s and Jerry’s pair? Jack’s had to run for the Water Closet yet ended up tripping on a Can bowing and hitting his Head on the Porcelain God! 🚽


ca Offline Chako

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Re: Canon R100 + Canon RF 24-105mm f/4-7.1 IS STM
Reply #3 on: September 28, 2025, 07:17:08 PM
Sorry for the late response. I am having a bit of a medical issue which necessitated my having a one week hospital stay and daily visits to a wound care clinic.

I do not care about touch screens honestly as most of my older cameras never had them. I recently came into a very cheap 80D which I have only used a few times...so the R100 not having one was a non issue for me.

As far as slower lenses, I have found that these new Canon mirrorless cameras deal with that quite effectively, especially when compared to all of my Canon DSLRs and EF/EFS lenses. The fact that I can hand hold an 800mm f11 is phenomenal. Mind you, I did it all day long on a Sigma 50-500mm with no stabilization on my DSLRs. That was a weight training exercise compared to these much lighter newer lenses.

I have never played with the M series Canons.

I found the R100 with kit lens for 200 Canadian. I then bought the 800mm f11 because I enjoy wildlife, and thought the slow lens would be limiting. I have not found that to be the case. I then bought the RF 24-105 because someone locally was selling it on Amazon Marketplace. It was fairly cheap. I then bought an R10 which I think is the sweet spot in bang for your buck. I tend to shoot wildlife and am not interested in full sized sensor cameras. Besides, I have a 5D Mark II if I needed it on tap. The R10 is phenomenal as far as the autofocus and tracking goes. It feels like I am cheating at times. I just got in an RF 100-400mm f5.6-8 IS USM yesterday. After using the 800mm f11, I am no longer worried overly much about using slower lenses on R series cameras.

As for Nikon, Canon is trashing Nikon on the autofocus front. If I had a choice, I would go with Sony over Nikon personally.
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