Conclusion: Canon EOS 40D - launched in 2007 - is still a great camera that is capable of giving outstanding results with a LM camera adapter/ LM microscope adapter
Canon EOS 40D Review
Canon PowerShot SD940 IS review: Canon PowerShot SD940 IS - CNET
Canon EOS 40D Digital Camera Review - Reviewed
Which one takes the best pictures between a Canon 2000D with its classic portrait lens or an iPhone 14 Plus (not Pro)? - Quora
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Canon EOS 40D Digital Camera Review - Reviewed
Canon EOS 40D Review: Digital Photography Review
Canon EOS 40D Review: Photography Specialist!
Powerfull full-frame sensor microscope camera Canon EOS 6D Mark II