Like many of you, I have a massive number of SD cards of varying capacities, and ages. I currently store them in a small plastic storage box. They are not in their original individual plastic protective containers, but loose in this storage box. Assuming that they are not becoming physically damaged in this box(which they are not), is there really any harm having them all in there together(touching one another)? To date, I haven't noticed any issues.
As a matter of habit, I always delete them before putting them back in the camera. But I don't "always" delete them before storing them in the box.
Thanks for any thoughts and/or expertise.

Bob

That's simply not true. There are many possible reasons if there's a choice that a "crop only" lens might be "better": size, weight, price, performance, specifications. I've given several examples above.

L-series are generally quite good and won't disappoint. But there are also a lot of very good lenses that aren't L's, that for one reason or another haven't been "blessed" with a red stripe!

Canon says to qualify as an L-series a lens must:

1. Use the most advanced design and high quality materials (pretty subjective).
2. Include "exotic" glass in its optical formula.
3. Be compatible with all EOS cameras past, present and future.

There have been some lenses that didn't get the L-designation, but otherwise are identical... such as the EF 100/2.8 USM Macro lenses. No exotic glass in that one, so it doesn't qualify for a red stripe even though it's got superb image quality and advanced design... and appears to be identical build as the EF 180/3.5L USM. In fact, the 100mm macro is faster focusing than the 180mm, probably making the 100mm a more versatile/dual purpose lens.

Other examples include the TS-E 90mm and TSE 45mm "Tilt Shift" lenses, sold alongside and identical in design and built to the TS-E 24mm "L". In this case, the "L" actually has the most image quality "issues"... but the 90mm and 45mm don't need any fancy glass to do their jobs very well, so Canon won't paint a red stripe on them.

Don't be an "L-coholic". Sure, they can be great... I use a number of L-series myself. But I also use a lot of non-L and those can be excellent too... maybe even "better" in some cases.