RF800mm lens fuzzy on EOS R5 Mark II

[CVOHDrider58]

I have the R5 Mark II. Recently i purchased the RF 800 F11 IS STM lens. I have not been able to get the lens to focus. It is like it gets close but the image remains fuzzy. Is there something wrong with the lens or something I am doing wrong?

[FloridaDrafter]

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@wq9nsc wrote:

It appears to me that the item best in focus is the bark of the tree between the two red vehicles. 

Rodger, if you are referring to the first image in the OP's examples, that was taken with an RF24-105mm F4 L IS USM. It caught me off guard as well 🙂

Newton

[FloridaDrafter]

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@johnrmoyer wrote:

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@CVOHDrider58 wrote:

Yes IS is on.

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What shutter speed? 

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John, 1/160

Newton

[wq9nsc]

Thanks Newton, I should have looked more closely at the rest of the exif data!

Rodger

[jrhoffman75]

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@CVOHDrider58 wrote:

I have the R5 Mark II. Recently i purchased the RF 800 F11 IS STM lens. I have not been able to get the lens to focus. It is like it gets close but the image remains fuzzy. Is there something wrong with the lens or something I am doing wrong?

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Any camera store or friend nearby with an RF camera that you can test it on?

Give Canon support a call at 1-800-OK-CANON.

[CVOHDrider58]

Thank you for all the replies and suggestions. I spoke with the camera store I purchased it from and they are going to do an exchange.

[wq9nsc]

Thanks to Newton for pointing out that I missed that the first photo you posted was with a different lens.
Those second two look like they have classic motion blur with the camera jumping vertically as you can see by the stretched and ghosting of the lettering in the vertical plane while they are fairly clean in the horizontal plane.  I agree with John Moyer that this looks exactly like camera shake and the wheels on the U Haul trailer also show the clear multiple image that occurs with camera shake where it is in focus and fairly stable at two or more brief instances during the exposure window. 

I have a very heavy duty Manfrotto tripod but when using a long focal lens with a slow shutter speed, I will use either the self-timer or my remote release/timer to avoid camera shake because even a very heavy duty tripod and head can shake a bit from the shutter press.

Choose a lighting situation where you can set the shutter speed to 1/1,000 and give the lens another try.  I expect the results will be much better.  I have zero experience with RF glass and the in body image stabilizer and there is probably some interaction between the two that may get further confused with a tripod.  Running a fast enough shutter speed to avoid shake blur as a test will tell you whether there is a true focus issue or a problem with camera motion.
Rodger 

[FloridaDrafter]

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@CVOHDrider58 wrote:

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This image is blurry because of lens shake. I'm not saying other images you've taken may not be soft, but this particular example.

Here is a crop around the word "FOR" taken from the above image and enhanced to show the lens movement.

First, I would get my SS up above 1/500 (this shot is at 1/160th), also figure out a way to get your ISO down. The images you posted were both at 10,000. Was the light that bad? I've shot with this lens, but sold it and bought the RF 200-800mm which is more expensive, but is a stop faster at 800mm (f/9) and has much better optics. 800mm is a little tough to get used to. Lens shake is exaggerated and although IBIS and ILIS really help, you have to be pretty stable to begin with. I use a monopod and any nearby tree, if there is one handy 🙂

Newton

[ebiggs1]

"I am doing wrong?"

Without further info my first guess you are too close to the subject. A sample with all your settings would be helpful to solve this dilemma You can also try a full camera reset to factory default settings. You may have set something incorrectly.

[ebiggs1]

"I am doing wrong?"

Without further info my first guess you are too close to the subject. A sample with all your settings would be helpful to solve this dilemma You can also try a full camera reset to factory default settings. You may have set something incorrectly.