24-105 F4 With R5 blurry immage

[Adityavadde]

Hi I recently purchased R5 with kit lens 24-105 F4 and was so exited. I was testing some low light shots and noticed very big difference in the image quality it is very much blurry when I take with 23-105 F4 lens which came as a kit lens with R5. When I used the same setting to take with 50mmR5 F1.8 lens it came out really good with same settings. I am not sure what is wrong with lens. I tried multiple shots multiple days to check why there is so much blur in the picture I had the same results when I tried all the times. I can attach photos if needed and show the difference in them and also original picture taken. But here are the settings ISO-200, f11, exposures 25 sec.

[Waddizzle]

I lack sufficient information to explain the discrepancies that you are reporting.  Your screenshot lacks sufficient resolution to read the exposure settings, much less form an opinion on the sharpness of the images.  It would also help to know more about your AF settings and shooting conditions.  For example, were these shot handheld?

I can offer on observation, though.  It looks like the images were captured at f/11.  The camera focus with the aperture wide open.  One lens focuses at f/1.8 and on at f/4.  This is a difference of three full stops of light in an already low light situation.  The more light the camera has to work with, then the better that is will focus.

[p4pictures]

When I enlarged your screenshot I saw the exposure settings for the 50mm and 24-105mm lens. Clearly the 50mm is sharper, and to me it looks like you must have had the camera on some support for it to be so sharp.

If the support was a tripod, were you on a bridge to take the scene - vibration from other vehicles may have impacted the shot. If the camera was resting on something then maybe what it was resting on vibrated during the second shot. Lastly, it is possible that the Image Stabiliser in the lens is the cause, when using lenses with IS it is often advised to switch off the IS for very long exposures.

[ebiggs1]

With a 25 sec exposure time it will be very difficult to compare two lenses with any degree of relationship. Too may things can effect it in that long time. How does the lens preform under more normal settings. That is what tells the tale.

In you case the AF mode could do just what you are seeing. For long exposure shots it best to lock focus even using gaffer's tape to prevent it from moving like astronomers do.

[Adityavadde]

I want tank you for the Replies and, I was using tripod to Get Study Shot for Both the cases. I was in Second Flore of the building to Shoot this. i dont agree there was a vibration or any shake. I have attached one more shot where it was very study on the Flore near water but image was so blurry.

As suggested by one of the user Brian, I am planning to try to turn of IS stabilizer to see if it works today and post to this thread.

I have attached the files below here to access. new file i was talking about and the previous files for review.

https://drive.google.com/drive/folders/18RF2icwjNEAvFkykjyjX3HJatAULF8_W?usp=sharing

[ebiggs1]

 The new sample shot shows clearly motion blur. Either the camera moved or there was an earthquake.

[flyingron]

The first shot also has clear motion blur.   It moves left and right stopping longest on the ends.   Look notably at the Wilkins street sign and the sawhorse sitting on the sidewalk.   Might be an IS artifact.

[Jeffivdotcom]

Could this motion blur (for a 25 sec exposure) simply be caused by pressing down the shutter-release button? I've had this problem and started remotely activating the shutter for longer exposures. Just a thought...