Do Nikon teleconverters work on the Sigma 105 macro?

In a word:  no.  And not just “they’re unsupported”, or that they have optical issues – they physically will not connect.  They are deliberately keyed to be incompatible.  Nikon teleconverters have a protrusion on their lens mount, which prevents any ‘standard’ Nikon-mount lens from attaching, unless that lens is missing a particular obstruction on the rear … Read more

D7100 burst rates varying by SD card

The contenders SanDisk Extreme Pro 95 MB/s 32 GiB SanDisk Extreme Plus 80 MB/s 32 GiB SanDisk Extreme 45 MB/s 16 GiB SanDisk Ultra 30 MB/s 16 GiB Lexar Professional 600x 128 GiB Maxell MaxData 16 GiB SanDisk Ultra MicroSD 64 GiB Samsung MicroSD 32 GiB Note that the last two are MicroSD cards, not regular SD … Read more

Initial Sigma 18-35/1.8 AF adjustments

Just thought I’d share what my AF calibration settings are, at least initially, for the Sigma 18-35/1.8 on a Nikon D5200.  And some comments on the process. As you can see, on my particular D5200 it has an overall tendency to back-focus (negative adjustment values mean “the subject was closer than AF thought”). It took a … Read more

Mac OS X 10.9 (Mavericks) built-in dictation

I’ve been looking forward to trying Mac OS X 10.9’s “advanced” (i.e. not-transmitting-my-life-story-to-Apple) dictation, as a potential competitor to Dragon Dictate.  Unfortunately, it’s – against all odds – even more embarrassing than Siri.  For example: This test, of the coolest names built-in dictation.) Nope, not important. If you’re..Reasonably built night, That was true Samaritan and … Read more