Seimar 300mm f/5.6
Optical design
Has 13 aperture blades, this lens has a beautiful bokeh. Not the best in low light conditions but the lack of high aperture can be compensated with higher isoSeimar 300mm f/5.6 purchase historyTrending up +2.6%/mo
Prices are firming up around 2.6% per month across 11 months of tracked sales — fair value today, not a guaranteed investment.
Best deals
985 of 1957 tracked sales (50%) closed at or under the $142.00 fair value.
- Mar 13, 2025$7.00$-135.00 / typical
- Jun 24, 2025$10.00$-132.00 / typical
- Mar 15, 2025$12.00$-130.00 / typical
- Jun 23, 2025$12.00$-130.00 / typical
- Feb 18, 2025$13.00$-129.00 / typical
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Technical Specifications
Similar Lenses
Reviews
Plan B kit lens This is a full frame lens so can be used on FX or film cameras as well as crop sensor (DX) cam eras. Constriction is plastic (except for the drive) including the F-mount flange. This means it is not likely to fair well on a drop. It is, however, very light weight and images do seem to be sharp even when zoomed to 300 mm. If you use it on a Nikon DX camera the camera will crop the image to appear like that of a longer focal length by a factor of 1.5. While optically it is still a 70-300 mm lens the images will appear like a 105-450 mm on a DX camera. It is not exceptionally fast so figure on daylight use. No focus motor is built into the lens so your camera must have the internal focus motor (not available on many smaller body Nikon DX cameras). This lens was often included as the second lens in many older Nikon camera kits. Read full review
Not as good as Sigma When Nikon, the presumed world leader makes a lens that won't even work on their own D3300 with auto focus, one has to wonder if they are trying to turn their brand into junk. I will buy a new camera body that it will hopefully work on, but until then, I put it in a scrap heap camera bag I will never use. I bought it because I trusted the brand. I won't ever make that mistake again.
Properly priced I bought this lens for my home inspection business, and it's perfect for that function. Houses don't move (much), so manual focus is no problem. Low light is seldom an issue, so maximum aperture of 5.6 is OK. It starts going soft at f-stops above f 11 or below f 8, so not a great lens in that regard. It's nice and compact (one reason I chose it), so I can carry it and my camera body, attached, in a small bag. Low light and moving subjects, no. Static subjects in daylight for medium-resolution applications, yes.
Frequently Asked Questions
What is the Seimar 300mm f/5.6?
Seimar 300mm f/5.6 is a camera lens with 300mm focal length, a maximum aperture of f/5.6/32, for the M42 mount, supporting the Full frame format.
What mount is the Seimar 300mm f/5.6 compatible with?
Seimar 300mm f/5.6 uses a M42 mount and supports the Full frame format.
How much does the Seimar 300mm f/5.6 cost?
Based on recent eBay sold listings the Seimar 300mm f/5.6 typically sells for around $7.00. Actual prices vary with condition and seller.
Is the Seimar 300mm f/5.6 a good lens?
Seimar 300mm f/5.6 has a community rating of 4.5/5 from 92 review(s).
Which lenses are similar to the Seimar 300mm f/5.6?
Similar lenses include Asanuma 350mm f/5.5, Mitsuki 300mm f/5.6 MC, Osawa 300mm f/5.6 MC.