I wanted to show off and also give a bit of background on a recent acquisition of mine. After diving fully into the Nikon ecosystem, I discover what is-in my opinion-one of the finest 35mm SLRs ever made in the form of the F2. I enjoy using them so much that I'm now at a half dozen or so of them. For those not familiar with Nikon-speak, I'll give a general overview. Like most pro Nikon bodies(and many other top of the line cameras of this era) the prism on the F2 is interchangeable. There are a variety of specialty finders, but the most ones are various eye-level 90º pentaprism finders. These all differ in the specifics of their metering system. The F2 meter is full integrated into the prism housing, although it's powered by two button cell batteries in the bottom of the camera. The various eye-level finders have both a numerical designation and a common name. When describing an F2, the common designation is often appended to the "F2" name. The three basic eyelevel finders are the DE-1, which is an unmetered prism, the DP-1, and the DP-11. In this context, an unqualified F2 might be understood to have a DE-1, although it's also sometimes called the "F2 plain prism." The DP-1 is also called the Photomic finder, and is a non-AI finder with a center-the-needle readout. The DP-11, also called the "A"(leading to the name F2A), is functionally identical to the F2 Photomic but works with automatic indexing(AI) lenses. Also, again for those who don't know Nikons, the non-AI/AI distinction might need some explanation. The first Nikon SLRs with a built-in meter relied on a "fork" on the aperture ring of the lens to communicate the set aperture. This fork is located at f/5.6, so its possible to know the set aperture. For a TTL meter, however, the maximum aperture must also be known. Initially, this was manually set on the film speed dial. Nikkormat cameras, however, introduced "semi-auto indexing" where the maximum aperture is communicated by turning the aperture ring to its largest aperture after mounting the lens. On pro Nikons, semi-auto indexing made its debut with the F FTN finder, and was used on all non-AI F2 finders. AI lenses have a "step" in the aperture ring in which a small tab rides and communicates "stops from full aperture" to the meter-the follower is still present to this day on all the better Nikon DSLR bodies. In any case, there were a couple of "upgraded" metered finders. The best known and most popular is the F2AS, which uses a silicon photodiode and uses three LEDs for the meter reading rather than a needle. There was also the F2S, which was a non-AI finder with a CdS cell but extended low-light sensitivity and a two LED meter read-out. Finally, we have the F2SB(DP-3 finder) which is effectively the non-AI version of the F2AS. It uses a silicon photodiode and also has the three LED read-out. The meter read-out is comfortable to anyone who has ever used an FM, FM2, or FM10. Most others familiar with manual exposure cameras will find it intuitive. Essentially, it has 3 LEDs-a + sign, - sign, and an O arranged in a linear array(at the bottom of the finder on F2s). The plus indicates that the current settings will result in overexposure, the - indicates underexposure, and the O is "correct" exposure. If the O and one of the other LEDs are lit simultaneously, the camera is telling you that you are within one stop of the correct exposure. For anyone using non-AI lenses, the F2SB is arguably the best option. It certainly has the most sensitive meter and can meter out to a 10 second measured exposure time(although the F2S does this also). Some folks might prefer the Nikkormat EL, which can give auto exposure with non-AI lenses, but I still consider the F2SB king. It's also one of the more difficult F2 finders to find, as it was made for 2 or 3 years. It's also worth nothing that it can give full aperture metering with ALMOST any lens with an aperture ring. Manual focus lenses-including the ones still made today-largely still ship with a metering fork installed on the aperture ring. The exceptions I can think of are the series E lenses, along with the 45mm f/2 AI-P(there is not room on the aperture ring of the latter). What's more, most AF lenses have pilot holes pre-drilled on their aperture ring so that a fork can be installed if desired. After looking for a while, I recently picked up a nice example. An absolutely beautiful DP-3 sold on Ebay a few weeks ago, but as is often the case, desirable finders off cameras are often as expensive if not more so than a complete camera. My example is a bit rough around the edges, but woks beautifully. Also, in the fun game of Ebay, it came with a 35mm f/2 lens(late version, AI converted)-this lens generally sells for about 2/3 what I paid for the complete camera. The camera SN starts with "72", meaning that-as was certainly even common at one time-an owner "upgraded" the meter on their camera. So, after all my rambling, here it is.