Lowepro Pro Trekker AW brand_Horseman STM autofocus is fast and

STM autofocus is fast and very quiet

Less repeatable but more convenient than a "hard" extension tube set

Non-working shutter

You'll be able to figure them out

Lowepro Pro Trekker AW brand_Horseman STM autofocus is fast andThe Lowepro Pro Trekker AW is what you might call a "full sized" camera backpack. If you have a large system and you want to take it all with you, this backpack will hold it (probably). It has thick straps and a waist support to give your shoulders the best chance possible of making it through the day. Please note that the AW "raincoat" is not present on this bag. Interior dimensions are approximately 18x32x45cm.