focal length 300mm on dx camera + 2X TC
15644
What is crop factor and how does it relate to focal length?
113163
Why do some lenses focus past infinity?
60621
How do I set up a Godox X2Tc to control a Canon Speedlite 430 EXII
93222
How does sensor size affect the brightness of an image given the same field of view and aperture?
84007
Why are there no fast APS-C zooms beyond 55mm?
19362
Can a smaller sensor's "crop factor" be used to calculate the exact increase in depth of field?
83701
What settings should I be using to shoot "Supermoon"?
75221
How to set Interval Timer on D7000 to take 180 x 25 second exposures with 2 seconds interval?
17851
How does using a lens with some focal length on a full frame camera differ from using a lens with "equivalent" focal lens on a crop camera?
150402
Is it normal for focal length to change while focusing?
154079
Should I buy a Canon 55-250mm lens or 70-300mm for my Rebel T3i?
71754
Why do two zoom lenses set to 200mm on the same camera produce different fields of view?
156616
Is a multishot self-timer mode available on mid-range cameras?
149933
How to estimate camera sensor size?
124752
How to get autofocus to work with D5100 and AF-P DX Nikkor
83545
What configuration would limit my DSLR's shutter speed to 1/200?
145744
How do I meter for long exposures (10+ minutes)?