elkcub
Silicon Valley, California
Ed,
That explains why I kept getting image blackouts with Steve's 8x30 SLCneu. It only has 15mm ER, which should have been perfect for me without glasses. The 804 Audubon HR/5 has 14mm ER and it works like a charm, so does the 13.5mm ER on the 8x30 EII. The EII's ER is about my limit. Below 13mm I start having a hard time seeing the full FOV. At 10mm my eyelashes are brushing up against the EPs., and I have to back off.
Usually long ER bins cause image blackouts, such as the Pentax 20x60 PCF, but they are good for eyeglass wearers.
Optical engineers must surely must know that SAEP causes image blackouts, so why then do they design EPs with SAEP such as those used in the 8x30 SLC and Nikon SE series? Is there some benefit to SAEP?
Brock
Brock,
Right. The 8x30 SLCneu has the same optics as the MkIII, and is no different from the MkIII with Swarobright, except for cosmetics.
If you can do that with glasses on I conclude that you are ... near sighted, right? I'm really jealous about the The 804 Audubon HR/5, which is just a bit out of sight for me.
Someone who knows more design optics than I do needs to explain the SAEP problem. With or without glasses I for one don't have any issues with the 18.5 mm 8x42 SLC-HD, 18 mm Zeiss B/GAT*P, or the 19 mm (?) Swift 8.5x44 HHS.
Ed