Rf24-240 on crop?
p.1 #1Rf24-240 on crop?
Just that really
Anyone use the 24-240 on crop bodies
Curious as to how it holds up. I looked on YT but can’t find anything?
Anyone??
Anyone use the 24-240 on crop bodies
Curious as to how it holds up. I looked on YT but can’t find anything?
Anyone??
Sep 03, 2026 at 12:59 PM
p.1 #2Rf24-240 on crop?
Here is one of the few or only articles that addresses both RF and RF-s performance.
https://opticallimits.com/canon/canon-rf/canon-rf-24-240mm-f-4-5-6-is-stm
It looks like the bad areas of the lens would be cropped out and the center is fairly good on a cropper.
Are you using the 32MP R7 or a lower resolution body?
EBH
https://opticallimits.com/canon/canon-rf/canon-rf-24-240mm-f-4-5-6-is-stm
It looks like the bad areas of the lens would be cropped out and the center is fairly good on a cropper.
Are you using the 32MP R7 or a lower resolution body?
EBH
Sep 03, 2026 at 01:43 PM
p.1 #3Rf24-240 on crop?
EB-1 wrote:
Here is one of the few or only articles that addresses both RF and RF-s performance.
https://opticallimits.com/canon/canon-rf/canon-rf-24-240mm-f-4-5-6-is-stm
It looks like the bad areas of the lens would be cropped out and the center is fairly good on a cropper.
Are you using the 32MP R7 or a lower resolution body?
EBH
Thanks for the link
I have the R100 & R50. I don’t much like the R50 tbh, but it’s got better AF so my hand might be forced.
I vowed I wouldn’t buy any more RF glass, then spotted a used 24-240 at a stupidly low price, bid and won !! £355 comes with hood too…. If it’s junk I’ll send it back , so nothing to lose really except my time. I intend to pair it with the 14-30 PZ. Should make a nice 2 lens travel / walkabout combo.
Sep 03, 2026 at 01:58 PM
p.1 #4Rf24-240 on crop?
I suggest testing the used lenses carefully, since those superzooms are fragile and can become misaligned. R100 appears to be the lowest of low with an older image processing system from the 2010s. I don't know how it could be better to use than any modern Canon.
EBH
EBH
Sep 03, 2026 at 02:42 PM
p.1 #5Rf24-240 on crop?
EB-1 wrote:
I suggest testing the used lenses carefully, since those superzooms are fragile and can become misaligned. R100 appears to be the lowest of low with an older image processing system from the 2010s. I don't know how it could be better to use than any modern Canon.
EBH
I never said it was better, just that I preferred it. I’m not a fan of articulated screens. I suppose the R100 reminds me of my 6D… just a bare bones simple camera.
As for the lens… I agree and will definitely be testing it, slightest whiff it’s not quite right it’s going straight back.
Sep 03, 2026 at 02:48 PM
p.1 #6Rf24-240 on crop?
Haven't used it on a crop body, just my RP. You can go from 24mm to 240mm, by a turn of the wrist. It's a versatile lens, without a doubt.
Jim
Jim
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Canon EOS RP RF24-240mm F4-6.3 IS USM lens 24mm f/8.0 1/640s 200 ISO 0.0 EV
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Canon EOS RP RF24-240mm F4-6.3 IS USM lens 240mm f/9.0 1/250s 100 ISO 0.0 EV
Sep 04, 2026 at 07:23 AM
p.1 #7Rf24-240 on crop?
jgoetz4 wrote:
Haven't used it on a crop body, just my RP. You can go from 24mm to 240mm, by a turn of the wrist. It's a versatile lens, without a doubt.
Jim
Looks great, I’d be happy with those 👍🏻
I’ve read on FF the corners are the weakest part? But as I’m shooting on crop hopefully I should be ok.
🤞fingers crossed it arrives tomorrow!! 🫣
Sep 04, 2026 at 10:43 AM
p.1 #8Rf24-240 on crop?
Pixelpuffin wrote:
JimLooks great, I’d be happy with those 👍🏻
I’ve read on FF the corners are the weakest part? But as I’m shooting on crop hopefully I should be ok.
🤞fingers crossed it arrives tomorrow!! 🫣
Thank you. You'll be fine with the crop camera
Jim
jgoetz4 wrote
Haven't used it on a crop body, just my RP. You can go from 24mm to 240mm, by a turn of the wrist. It's a versatile lens, without a doubt.Jim
I’ve read on FF the corners are the weakest part? But as I’m shooting on crop hopefully I should be ok.
🤞fingers crossed it arrives tomorrow!! 🫣
Thank you. You'll be fine with the crop camera
Jim
Sep 04, 2026 at 11:02 AM
p.1 #9Rf24-240 on crop?
Not to hijack your thread, but regarding the R100, it is a basic camera. No frills, nothing fancy at all. However, it delivers. I was impressed by how well it focused on the squirrel. It was breezy, there were tall weeds/grass and a metal fence, but the camera nailed focus.
Jim
Jim
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Canon EOS R100 RF600mm F11 IS STM lens 600mm f/11.0 1/80s 400 ISO 0.0 EV
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Canon EOS R100 RF600mm F11 IS STM lens 600mm f/11.0 1/80s 400 ISO 0.0 EV
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Canon EOS R100 RF600mm F11 IS STM lens 600mm f/11.0 1/60s 400 ISO 0.0 EV
Sep 04, 2026 at 04:39 PM
p.1 #10Rf24-240 on crop?
I use the 24-240 on my R10 every now and then. Nothing to complain about. Never tried it on my R100 as the lens feel rather big on these small bodies. And I really like the RF-S 10-16 on the R100.
Sep 04, 2026 at 04:50 PM
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p.1 #11Rf24-240 on crop?
Z250SA wrote:
I use the 24-240 on my R10 every now and then. Nothing to complain about. Never tried it on my R100 as the lens feel rather big on these small bodies. And I really like the RF-S 10-16 on the R100.
I managed to get a few (3) 3D printed grips they fit both R100/50 perfectly and make a huge HUGE difference to both ergonomics and handling. I actually tried the R100+Grip with my old 300/4is. Felt great
So I’m hopeful the 24-240 with its native mount will excel. - Just hope it’s as good as the seller described.
🫣
Sep 04, 2026 at 11:34 PM
p.1 #12Rf24-240 on crop?
The only complaint I have with the 24-240 on crop is that the angle of view at the wide end is 38 not 24mm. The 384mm at the long end is very nice to have but 38mm wide is a bit too narrow for my use.
A RF-S 15-150 would be an exact 24-240 on crop. I would strike like a cobra for that lens. The Good, Old and Fat EF-S 15-85 with 24-136mm FF FoV is ofcourse nice on RF for the IQ. But putting that weight an adapterlength forward on the small croppers, especially on the R100 goes very awkward.
A RF-S 15-150 would be an exact 24-240 on crop. I would strike like a cobra for that lens. The Good, Old and Fat EF-S 15-85 with 24-136mm FF FoV is ofcourse nice on RF for the IQ. But putting that weight an adapterlength forward on the small croppers, especially on the R100 goes very awkward.
Sep 05, 2026 at 09:55 AM
p.1 #13Rf24-240 on crop?
Z250SA wrote:
The only complaint I have with the 24-240 on crop is that the angle of view at the wide end is 38 not 24mm. The 384mm at the long end is very nice to have but 38mm wide is a bit too narrow for my use.
A RF-S 15-150 would be an exact 24-240 on crop. I would strike like a cobra for that lens. The Good, Old and Fat EF-S 15-85 with 24-136mm FF FoV is ofcourse nice on RF for the IQ. But putting that weight an adapterlength forward on the small croppers, especially on the R100 goes very...Show more →
I agree on the 15-85, it’s great on older DSLR’s but on mirrorless it’s a pita.
I just remembered I still have the ef-s 55-250is stm. Maybe I was a little hasty buying this 24-240?? I bet the 55-250 works great on mirrorless….ah well, we’ll see.
Sep 05, 2026 at 11:18 AM
p.1 #14Rf24-240 on crop?
Pixelpuffin wrote:
A RF-S 15-150 would be an exact 24-240 on crop. I would strike like a cobra for that lens. The Good, Old and Fat EF-S 15-85 with 24-136mm FF FoV is ofcourse nice on RF for the IQ. But putting that weight an adapterlength forward on the small croppers, especially on the R100 goes very awkward.I agree on the 15-85, it’s great on older DSLR’s but on mirrorless it’s a pita.
I just remembered I still have the ef-s 55-250is stm. Maybe I was a little hasty buying this 24-240?? I bet the 55-250 works great on mirrorless….ah well, we’ll see.
It does!
Long, slim and light weight and very good.
Z250SA wrote
The only complaint I have with the 24-240 on crop is that the angle of view at the wide end is 38 not 24mm. The 384mm at the long end is very nice to have but 38mm wide is a bit too narrow for my use.A RF-S 15-150 would be an exact 24-240 on crop. I would strike like a cobra for that lens. The Good, Old and Fat EF-S 15-85 with 24-136mm FF FoV is ofcourse nice on RF for the IQ. But putting that weight an adapterlength forward on the small croppers, especially on the R100 goes very awkward.
I just remembered I still have the ef-s 55-250is stm. Maybe I was a little hasty buying this 24-240?? I bet the 55-250 works great on mirrorless….ah well, we’ll see.
It does!
Long, slim and light weight and very good.Sep 05, 2026 at 02:01 PM
p.1 #15Rf24-240 on crop?
Update:-
Got home from work to find this 24-240 had been delivered…yay!!
Quick shower/ change grabbed my R100 and decided to take my lowly 55-210 outside to compare it with the 24-240
Subject was the reverse side of a box of cereal placed on a wall 10m away
The 24-240 had come with a Hama UV filter fitted, so removed it. My own 55-210 doesn’t have filter.
Right off the bat, wide open at maximum telephoto my 55-210 was clearly sharper and with more contrast. I repeated the test and got exactly the same result. So moved closer so I was 5m away.. again mine was better.
Spotted a pigeon on a rooftop so took a shot with the 24-240 (it then flew off) the resulting picture is bloody awful. You can tell it’s a pigeon but the lens simply didn’t capture any details of the feathers, the pigeons eye was totally blurry.
I’ll request a return and post back.
Pity
Edited on Sep 08, 2026 at 10:45 AM · View previous versions
Got home from work to find this 24-240 had been delivered…yay!!
Quick shower/ change grabbed my R100 and decided to take my lowly 55-210 outside to compare it with the 24-240
Subject was the reverse side of a box of cereal placed on a wall 10m away
The 24-240 had come with a Hama UV filter fitted, so removed it. My own 55-210 doesn’t have filter.
Right off the bat, wide open at maximum telephoto my 55-210 was clearly sharper and with more contrast. I repeated the test and got exactly the same result. So moved closer so I was 5m away.. again mine was better.
Spotted a pigeon on a rooftop so took a shot with the 24-240 (it then flew off) the resulting picture is bloody awful. You can tell it’s a pigeon but the lens simply didn’t capture any details of the feathers, the pigeons eye was totally blurry.
I’ll request a return and post back.
Pity
Edited on Sep 08, 2026 at 10:45 AM · View previous versions
Sep 07, 2026 at 11:15 AM
p.1 #16Rf24-240 on crop?
The seller accepted the return instantly!!
I checked completed listings mine is the cheapest a 24-240 has ever sold, one was sold moments after mine for £500+
So I suspect the seller maybe miffed and wants to try listing again… maybe, maybe not??
So tonight when I got home I went straight back out to test again near distance, far distance, at 50/55mm, 100mm & 210mm focal lengths.
Every single shot the lowly 55-210 was sharper and much more contrasty!! The far distance shot was the roof line tiles on the church next door. That was where the huge disparity was… the 24-240 was flat and soft the 55-210 was so contrasty and was sharp enough to see the texture on the terracotta ridge tiles.
I really don’t want to send it back, but will I ever use it?? Maybe if I someday buy another FF. I suspect using it on crop has pushed the lens too much, a 20mp FF would be much less demanding?
What do you chaps think??
I checked completed listings mine is the cheapest a 24-240 has ever sold, one was sold moments after mine for £500+
So I suspect the seller maybe miffed and wants to try listing again… maybe, maybe not??
So tonight when I got home I went straight back out to test again near distance, far distance, at 50/55mm, 100mm & 210mm focal lengths.
Every single shot the lowly 55-210 was sharper and much more contrasty!! The far distance shot was the roof line tiles on the church next door. That was where the huge disparity was… the 24-240 was flat and soft the 55-210 was so contrasty and was sharp enough to see the texture on the terracotta ridge tiles.
I really don’t want to send it back, but will I ever use it?? Maybe if I someday buy another FF. I suspect using it on crop has pushed the lens too much, a 20mp FF would be much less demanding?
What do you chaps think??
Sep 08, 2026 at 10:44 AM
p.1 #17Rf24-240 on crop?
The 24-240 is plenty sharp. It sounds like the seller knew he was selling a damaged lens.
Sep 08, 2026 at 11:11 AM
p.1 #18Rf24-240 on crop?
Mike_5D wrote:
The 24-240 is plenty sharp. It sounds like the seller knew he was selling a damaged lens.
My partner looked at the test pictures and said she couldn’t see any difference!! 🤣
Rolled her eyes, called me sad and walked off!!
Tonight I found a small white box with black text on the reverse along with the barcode
Placed it on a wall roughly 8-10m away
The box was 4”x1”x1” (hay fever drops)
Text on reverse… 2mm
Both lenses, fully extended
(210 & 240mm)
Same 7.1 aperture on both
Took the shots
Came inside, uploaded the card to my laptop then zoomed 100%
I can read all the txt clearly and the barcode lines are clear too
Just the 55-210 is clearer and more contrasty than the 24-240
One is 4x zoom the other a 10x zoom
I’m right aren’t I in thinking the 10x lens will not be able to out resolve the 4x??
The condition is remarkable
I can’t find even a blemish? Shone a torch thru and it’s very very clean… odd dust spot but nothing sinister looking.
Sep 08, 2026 at 12:08 PM
p.1 #19Rf24-240 on crop?
I just did a quick test of the 24-240 against my EF 70-200 2.8 II. I was about 12 yards away and cropped in to show the text. I focused on the weld since the text was so hard to see: I wanted to make sure the camera had something to focus on. The 70-200 is definitely sharper but the gap is smaller than you'd think given the relative price points. Also, shooting black text on white is kind of a of a worst case test for lens sharpness. Pictures you actually care about are much more forgiving.
Sep 08, 2026 at 01:36 PM