Their side focus wheels are the same diameter but they are definitely different scopes that look similar to anyone who doesn't own both to compare them side by side. This Discovery HD is a bigger scope which is pretty decent with a semi finicky eyebox and isn't as bright and clear as the smaller Alpha6 and their difference is noticeable even for someone with bad eyesight (well maybe not).
Here are the Discovery HD on left 4-20x50 FFP and Alpha6 4.5-27x50 SFP on right.
I have the Discovery 5-25x50 HD SFP too and that too isn't as clear with an eyebox that's not as friendly and their housings are really close practically the same eyeballing. The SFP Discovery HD has a reticle that looks pretty much the same as the Alpha6.
Thanks! I need a side wheel. Who has them or knows where to get one.
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