All Forum Comments
Comment by Algernon posted on New and old kit objective at 01/07/2011 - 10:45
Comment by Algernon posted on Definitely impresses by the K5 at 01/07/2011 - 10:31
It's only when you use a Kiron Zoom that has the proper twin markings for zooms that have variable apertures that you realize how difficult they are to use. i.e. a zoom that is f/4 - f/5.6
Comment by Algernon posted on Any ideas what this lens is? at 01/07/2011 - 10:28
Comment by Algernon posted on Ricoh to buy Pentax at 01/07/2011 - 10:19
Comment by Algernon posted on Battery Consumption at 01/07/2011 - 10:06
It remains to be seen what Ricoh's plans are? Having dropped their own line of film SLR's years ago have they any interest in DSLR's? It only mentions consumer cameras not professional cameras?
Will the production lines be stopped whilst Ricoh review the business?
Comment by Algernon posted on Ricoh set to purchase Penatx at 01/07/2011 - 10:00
with the Pentax A*300mm and 6mm extension tube. link
Comment by Algernon posted on views on smc 300mm f4 M series at 30/06/2011 - 21:18
on a K-5 at Photozone.de link
I think yours is the same as a Mk 2
Comment by Algernon posted on New and old kit objective at 30/06/2011 - 20:40
I doubt if you'd see any difference from f/5.6. The actual image is 11% bigger (linear, assuming it's optically identical to the A* )
So although it only focuses to 4m without an extension tube you would have to be 3.6m away with the DA*300 to get the same image size.
I haven't used it with the K-5 yet only the K10D and K20D.
I might try it shortly.
Comment by Algernon posted on views on smc 300mm f4 M series at 30/06/2011 - 20:20
Comment by Algernon posted on Any ideas what this lens is? at 30/06/2011 - 18:35


The performance from the good one was identical to the Mk 2
Even the bad Mk. 1 wasn't all that bad.... just not as good as the Mk.2