Is there any high quality distinction between RAW and CROW in new Canon mirrorless cameras?

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Once I reviewed the Canon EOS M50 a number of years in the past, I got here throughout compressed cRAW information for the primary time. Crow can be accessible in newer Canon mirrorless cameras. This compressed uncooked file allows you to save much more photographs on a reminiscence card with out lack of high quality.

Once I reviewed the Canon EOS M50 in 2018, I used the cRAW file format. It’s a variation of the common uncooked file format, however it’s about half the file dimension. Through the use of this compressed cRAW file format, you possibly can retailer virtually twice as many photographs in your reminiscence card.

Additionally, the brand new Canon EOS R5 and Canon EOS R6 have the compressed Craw file format. This may be very helpful, particularly for big information on the Canon EOS R5. For the Canon EOS R6, this can be much less necessary, because the sensor has solely 20 megapixels, producing information between 20MB and 30MB. With the cRAW file format, you find yourself with information between 10 MB and 16 MB.

Though I did a comparability between uncooked and cRAW file with the Canon EOS M50, I believed it could be fascinating to do the check a bit extra totally. I needed to see not provided that there was any distinction between ISO ranges, but additionally by correcting with underexposure, overexposure and extreme post-processing.

For this check, I went exterior and picked up some autumn leaves. I believed it could be a superb matter for this examination. To make a spotlight within the setup, I mounted an LED underneath an oak leaf. There was no additional gentle, simply pure window gentle. I used the Canon EOS R6 with the RF 24-105mm f/4L IS lens mounted on a sturdy tripod. I used the handbook publicity setting and handbook focus, though the latter is of much less significance for this check.

I’ve seen that Canon does not permit you to save a uncooked file on one reminiscence card and a craw on one other. It’s a must to select one or the opposite, which is a pity. It could be nice if Canon permits saving RAW for one card and CROW for backup on the opposite.

1. Examine a Appropriately Uncovered Picture

The primary check was a easy comparability with the proper publicity in each Uncooked and Craw. I made a decision to shoot a variety of photographs from ISO 100 to ISO 102,400. I do not need to hassle you with the entire sequence; Thus, I selected to solely examine ISO 100 and ISO 1,600 photographs side-by-side.

Uncooked photographs are on the left, cRAW photographs are on the best.

The primary are ISO 100 photographs with and with out crop.

ISO 1,600 photographs with and with out cropping are forward.

Pictures are straight from the digital camera, and I used Lightroom to supply JPEG photographs from each RAW and CRW information with out post-processing. Even with a big magnification, which seems to be like virtually 100%, photographs from compressed uncooked present no loss in high quality.

2. Evaluating Three-Cease Underexposed Pictures

I deliberately created the identical picture with three-stop underexposure. That is corrected by growing the publicity slider to the identical degree as the proper publicity in Lightroom Traditional. I did this with each ISO 100 and ISO 1,600 photographs to see if this publicity correction had any impact on the standard of the cRAW file in comparison with the uncooked file.

Once more, uncooked photographs are on the left, cRAW photographs are on the best.

The primary are ISO 100 photographs with and with out crop.

ISO 1,600 photographs with and with out cropping are forward.

3. Evaluating Two-Cease Overexposed Pictures

After overexposing two stops, I’ve tried to repair it in Lightroom Traditional. As you possibly can see, the discharge lit by the LED gentle is lower off. This half can’t be saved after processing. Let’s check out the consequence for each ISO 100 and ISO 1,600.

Uncooked photographs are on the left, cRAW photographs are on the best.

The primary are ISO 100 photographs with and with out crop.

ISO 1,600 photographs with and with out cropping are forward.

4. Evaluating a Extremely Submit-Processed Picture

I questioned how the standard could be if I did extra excessive post-processing on these photographs. For this comparability, I took photographs that had three-stop underexposure and re-corrected it in Lightroom Traditional. Additionally, I set the shadows to +100 and the highlights to -100. I additionally modified the black level and white level and elevated the feel, readability, blur, and vibrancy. This was executed at ISO 1,600 RAW and cRAW photographs.

Uncooked photographs are on the left, cRAW photographs are on the best. I’ve stored solely the cropped variations for this comparability.

5. Evaluating a Very Excessive ISO

Though I’ve solely shot ISO 100 and ISO 1,600 photographs thus far, photographs have been shot as much as ISO 102,400, which, underneath regular circumstances, I do not discover usable for industrial functions. With the Canon EOS R6, I would not transcend ISO 12,800.

In post-processing, I elevated the publicity to 1.25 stops, decreased the highlights to 100, and elevated the shadows to 100. I set White Level and Black Level, Enhanced Texture, Readability, Dehuz, and Vibrance. I additionally modified the white steadiness.

Uncooked photographs are on the left, cRAW photographs are on the best. I’ve solely proven cropped variations. Bear in mind, these are shot at ISO 12,800.

My conclusion after this check

By doing this experiment, I’ve discovered that regardless of the small file dimension, there may be little or no loss within the high quality of cRAW. Perhaps a better look will present some distinction, particularly if one thing like a coloration checker was photographed.

However I discovered this experiment to be a extra practical comparability to a real-life state of affairs. I feel it is secure to say that CRW exhibits negligible discount in high quality. I discover the craw file format to be very secure to make use of when taking pictures necessary occasions like weddings, even with extreme post-processing.

One other factor I seen when viewing photographs is the ISO 12,800 picture high quality. I feel the Canon EOS R6 could be very helpful at this excessive ISO degree.

Please see the photographs on this article for your self and draw your personal conclusions. Inform me what you suppose. Is Crow usable like common uncooked information? Please share your opinion within the remark part under. I’m trying ahead to your response.

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