I am a hobbyist photographer. I own a Canon RP .
I have the following lenses
Canon RF 24-105mm f/4-7.1 IS STM
Canon RF 100-400mm f/5.6-8 IS USM
Canon RF 50MM f/1.8 STM
Canon RF 15-30mm f/4.5-6.3 IS STM
Canon EF 100mm f/2.8 MACRO USM with Canon adapter ef to rf.
I know the technical details about the models of canon rf mount cameras & lenses and for ef and ef-s lenses.
I am thinking to replace my RP that is the lowest end full frame rf camera
with a R7, that is the best aps-c RF mount. I know that all sites that compare cameras give better mark for image quality to the RP as a full frame than R7 .
But I find the aps-c have advantages with most important the budget needed for the lenses.
If I sell with the rp the 24-105 kit lens and the wide zoom lens 15-30
the 50mm will be a great portrait lens on R7 , as an 80mm lens with crop factor.
The 100-400 will be a much greater telephoto , as an 160-640mm .
With the 33megapixels, I will have also better digital zoom with crop.
The ef 100mm macro , with 160mm equivalent will be also better macro lens, giving greater distance from small objects.
For wide zoom the aps-c rf cameras have the much cheaper 10-18 is stm
For a power all around (and to do) zoom , the 18-150 in half price of full frame 24-240 .
A 500 euro rf 85mm f/2 is almost equivalent with the much more expensive 135mmfull frame with triple price.
For a pro f/2.8 I could buy a grey import ef-s 17.55 f/2.8
No...... that one is outdated. Great at f/5.6, but it's not fun to carry f/2.8 to shoot at f/5.6.
or a brand new rf-s sigma
1000 euro in my market
for the 1/3 of a full frame rf lens with f/2.8 .
The af system of R7 also is more pro and could follow animals eyes and vehicles, while rp's don't
What do you think ?
I think it's a bad idea. The R7 has a very high pixel density sensor, and your glass should be top notch to feed that detail hungry sensor. Digital croppability doesn't bring you anything if the glass can't keep up with pixel density.
You already own the full frame lenses, so selling it off will cause a financial loss.
You state you know al the technical details about aps-c vs crop, however, equivalent apertures aren't given much thought. There's no way the RF 85mm f/2.0 IS stm can do the same as a 135mm f/1.8 L. On a crop sensor you will also see fringing from the 85mm lens which is barely visible on a full frame sensor.
I would prefer the IQ of the RF 85mm f/2.0 on a full frame 24Mp sensor any day of the week over the RF 50mm f/1.8 stm on a 32Mp crop sensor. Yeah, I know, 50mm*1.6=80mm. But there's more to it than that.
Has anyone used both cameras and those lenses as I described ?
Christopher Frost tests several lenses on both full frame and aps-c. I suggest you should watch some reviews for the lenses you're planning to use on the R7 before buying into crop. The 100-400mm for instance, but the others as well. There's a reason full frame cameras are more expensive (although its MUCH more affordable than say 7 years ago), and that reason is better IQ.
I think you should upgrade to R8 or R6II.