Since the subject has been on my mind ---and---For what it's worth:
A lot of the borescopes of the floppy probe type are marketed for automotive repair shop use. One of the people I know with a Hawkeye (and to which I have compared the picture I get with my VO scope) is------>
I just got back from a trip to my mechanic, where this subject came up while I was paying my repair bill, since we both shoot and clean rifles. He mentioned that the scope they use in the shop is a lot larger diameter than the Hawkeye that he owns and the VO scope I own and that he did not think that a scope made to look down a bigass hole needed the ability to see really tiny things like rifling grooves. We looked at the one in the shop there and it was considerably larger in diameter (the probe) than our respective rifle borescopes. We thought that we might see a larger bundle of fibers of the same diameters as what we see by looking at the business end of the rifle scopes, but we did not. What we saw were fiber light tubes of larger diameter making up about the same number ( I thought at the time ) in the bundle as were present in our smaller diameter probes. fooling around with the shop scope as we might, we were never able to get really good rifling groove type detail.
When I got home I looked at my scope's probe and I am sure that there are more fibers in the bundle than what I saw in the larger (shop) probe. This leads me to believe that there may be a similar lack of definition in some of the new (cheap, not inexpensive) products on the market since I bought mine. I think more fibers = better definition.
A lot of the borescopes of the floppy probe type are marketed for automotive repair shop use. One of the people I know with a Hawkeye (and to which I have compared the picture I get with my VO scope) is------>
I just got back from a trip to my mechanic, where this subject came up while I was paying my repair bill, since we both shoot and clean rifles. He mentioned that the scope they use in the shop is a lot larger diameter than the Hawkeye that he owns and the VO scope I own and that he did not think that a scope made to look down a bigass hole needed the ability to see really tiny things like rifling grooves. We looked at the one in the shop there and it was considerably larger in diameter (the probe) than our respective rifle borescopes. We thought that we might see a larger bundle of fibers of the same diameters as what we see by looking at the business end of the rifle scopes, but we did not. What we saw were fiber light tubes of larger diameter making up about the same number ( I thought at the time ) in the bundle as were present in our smaller diameter probes. fooling around with the shop scope as we might, we were never able to get really good rifling groove type detail.
When I got home I looked at my scope's probe and I am sure that there are more fibers in the bundle than what I saw in the larger (shop) probe. This leads me to believe that there may be a similar lack of definition in some of the new (cheap, not inexpensive) products on the market since I bought mine. I think more fibers = better definition.