On Jun 6, 2008, at 11:03 AM, William Robb wrote: > > ----- Original Message ----- > From: "Roman Melihhov" > Subject: katz eye focusing screen and slow apertures > > >> How catz eye focusing screen works with apertures slower than 4 - >> 5.6? >> From my earlier experience with non-pentax bodies and AF-screen with >> microprisms it's not so good on apertures 5.6 and slower. In fact >> - it >> may be useless or disturbing and given that some good DA series >> lenses I >> own are f/4.0 or f4.0-6.3, I'd rather hear your practical opinion >> before >> I decide to change my installed K20D AF-screen for katz eye. >> > > I just tried the A400/5.6. > The microprism is fine, the split image is fine, but make sure your > eye is well centered on the > viewfinder or else there is blackout on the split image. > With the A400/5.6 and the 1.4X converter mounted, the microprism is > fine, the split image is > suffering partial blackout, but is still usable. > With the A400/5.6 and the 2x converter, the microprism is fine, the > split image is suffering > partial blackout, but is still usable. > > In all cases, it is easier to focus the K20 with the Katz Eye than > the K10 with the stock > screen, though not by a huge margin. As I mentioned the other day, > the K20 AF seems to be more > accurate than what I can acheive with manual focus, which I expect > says more about my eyesight > than anything elses. > I did get the optibrite treatment for the Katz Eye. > Were I only using AF lenses, I wouldn't bother with a replacement > screen, but I use a mix of > manual focus and auto focu lenses, and i think I will find the Katz > Eye helps my manual > focusing, especially with the longer focal lengths such as the 400 > and 600mm. > > William Robb > >
Is anyone using a Katz Eye screen on a K1000? Will it help make up for the dimmer pentamirror? cheers Mike -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
