Some pictures of old Pentax glass (and one Samyang) coping with the original A7. I've been lately using the A7 more than my K-5IIs. My love for the aps-c has not decreased, but I admit that manual glass on the Sony is extremely pleasant to use. Let alone the FF sensor. Still like this, I do now want to part with my beloved DSLR.
Sony A7 Pentax SMC K 55mm f1.8 1/160 f1.8 ISO 320
Sony A7 Pentax SMC K 55mm f1.8 1/320 f2 ISO 2500
Sony A7 Pentax SMC K 35mm f3.5 1/250 f5.6 ISO 50
Sony A7 Pentax SMC M 50mm f2 1/250 f2 ISO 1000
Sony A7 Pentax SMC K 35mm f3.5 1/40 f3.5 ISO 100
Sony A7 Pentax SMC K 55mm f1.8 1/60 f2.8 ISO 250
Sony A7 Pentax SMC M 40mm f2.8 1/400 f8 ISO 64
Sony A7 Samyang 85mm f1.4 1/3200 f1.4 ISO 64