EOS RP photo aren't as sharp the ones from my EOS M50

[kingsahibkhan]

Hey i realized that a lot of my RP photos arent as sharp as my M50 at further distances and a lot of times my RP photos are blurry and i never experienced the same with my M50. 

https://drive.google.com/drive/folders/1ggc239v1EpPc3rZ9zn2lJ78--hZNbHOf?usp=sharing

The picture at the pier was with RF lenses and as you can see it cannot focus well at all. The other pictures are with a EF 50mm. The clarity of the walking person in with the m50 is just far higher than the people in the RP photo. Please take a look and see if you agree. (zooming in makes the biggest difference.)

[deebatman316]

The picture with the pier the camera did focus on something. It didn't focus on the people you would have to zoom in more to get them in focus. A camera can only focus on one spot not multiple. Using a different F/ stop for instance moving from F/4 to F/11 would yield more things in the background to be in focus. The camera will always focus on something that is closer to it than further away. Also if it has more contrast it will do the same thing. 

[Tronhard]

To add to the comments that Demetrius has made about focus - using the default matrix focus will simply let the camera focus on what has the clearest contrast and what is closest.  In a cluttered image it is much more effective to use single point or expanded centre focus.  That way you point the centre of the field of view at the point you want in focus and the camera will concentrate on that.  However, the challenge then if you are using the shutter button to focus, moving the camera to compose may well get the focus point to move.  That is why so many photographers use Back Button focus, with centred spot focus and Servo.

See the following video from Canon on this subject:

Another thing I am picking up is that the images from the RP are generally blurrier than those of the M50, but looking at the details in DPP4 at how the images were shot, it appears you are shooting in live view mode, is that correct - i.e. you are shooting by looking at the back LCD rather than via the EVF?

[kingsahibkhan]

Yes i use the LCD more often, and i did the same for the M50. I generally do not have camera movement issues if shooting faster than 1/80 on the shutter. The focus issue with the RP comes up even when the focus is on singular point and focuses right on the subject. I usually delete all the bad photos so i dont have an example to show you but its a constant focus issue when shooting at a distance.

On the m50 if i used the 50mm and singular point focus to shoot a subject thats 10 meters away there are no issues with the sharpness of the subject but if i do the same with the RP it does not focus well and become blurry.

[Tronhard]

To expand on my last comment.   While the R50 with a short FL lens is very light and may tolerate being used by looking at the LCD, the RP is much heavier and the potential for camera shake is magnified by the focal length.  For that reason, conventional wisdom encourages you to use the electronic viewfinder instead of the LCD for composing and shooting.  That is because you get three points of support: the two elbows tucked tight to the sides of the torso, and the camera pressed against the face - thus forming a sort of tripod.   See this example of how to use a larger camera:
The correct techniques

[deebatman316]

The OP has the EOS M50 not the EOS R50. So that camera is much smaller than the RP.

[Tronhard]

My examination of the images in DPP4 and Photoshop really show that there is consistent camera movement - it's not just my opinion, I consulted with Demetrius and he shares the same opinion.  You definitely have camera shake as well as some focusing issues, so it's up to you if you want to take the advice about using the EVF.

One sees a lot of images on social media and You Tube of people shooting via the LCD, but usually they are shooting with cameras using very short FL lenses and they are using lenses with image stabilization, and many cameras have IBIS as well, to mitigate that camera shake. Your 50mm has no IS and its own weight is exacerbated by the EF-RF adapter required, apart from the weight of the camera itself.  With the RF 24-105, while it has IS (is it enabled?) that is not a guarantee of steadiness with shooting - that IS is designed assuming one is holding it as steadily as possible, it's not a panacea.

As to the focus itself, I would definitely suggest exploring the use of the more limited focus points - this gives you the most control of what the camera is going to focus on.  Most fellow professionals I know will use single point focus and BBF to control.

[kingsahibkhan]

I did singular point on a building and even that building came out blurry, im going to see if i can take more photos as examples tomorrow. 

[Tronhard]

I think that is a good idea.  Can you humor us by taking some using the LCD and some using the EVF with the hand and arm placement as shown?  Technique is far easier and cheaper to fix than gear issues.

[deebatman316]

The problem here is that Full Frame cameras have shallower depth of field than their APS-C counterparts. Shooting at very wide open apertures on Full Frame will show this more. Shooting at F/2 for instance on APS-C camera will have more things in focus than shooting at F/2 on a Full Frame camera. Also the image sensor in an APS-C camera causes a 1.6x focal length increase. The lens will always be a 50mm lens but the angle of view changes depending on the sensor size. Note both of these pictures below were both taken with the EF 50mm F/1.8 STM lens. But one picture was taken on an APS-C camera the other was take with a Full Frame camera. The picture on the top was taken with the EOS 40D an APS-C camera. The picture on the bottom was taken with the EOS 5D Mark IV a Full Frame camera. Both pictures were taken at an aperture of F/1.8. Notice the picture on the bottom has more bokeh (background) then the one at the top.

Gear: EOS 40D, EF 50mm F/1.8 STM Settings: Tv 1/1000th sec, AV F/1.8, ISO 100

Gear: EOS 5D Mark IV (Full Frame), EF 50mm F/1.8 STM Settings: Tv 1/320th sec, AV F/1.8, ISO 100