In addition to the tubes, the LOMO 3.7x is also prone to reflections. A very small black "hood" protruding a few mm past the end of the objective might help. I also painted the end of the objective body black, but that may be an overkill. The nominal length for the tubes in the direct projection is...

Owen, congratulations on your first foray into using microscope objectives. Regarding step size, see https://zerenesystems.com/cms/stacker/docs/tables/macromicrodof for tables that will simplify your estimates. Table 2-C is appropriate for a microscope objective. Your 4X objective is probably NA 0....

Hello! I have recently ventured into the world of photomicrography, especially using microscope objectives, attached to DSLR! I have completed my rough setup and taken a test run, 250 image stack, using an achromatic 4x objective (further setup details below). I'm going to be honest and say... the f...

Lomo is finite, but it works even better as infinite. On full frame with 120mm Gretag the sharp area was about 80% of image width and on DCR-250 it was about 30mm diameter. APS-C circle is about 27mm, so based on the latter, 112.5 mm tube should be sharp corner-to-corner. If you don't care about ex...

All this seems good, although I before would check the prices at the original makers sites. Wemacro, Zerene, Helicon focus, etc all have their own sites with direct sales. I don't know www.ultramacro.co.uk but they seem just resellers Don't worry! I have definitely been looking and there are a few ...

Hi Owen, Thank you for the clarification. I think the GXM is a none-starter. The magnification range you get is between 1x - 4.5x. At the higher end, these stereo microscopes optics are usually not very good; so the usable range is maybe 1x - 3x. There are many other affordable and superior optics ...

Yeah, stereo microscopes are the ultimate visual inspection tool but less ideal for photography. If you get a high quality stereo microscope you can get decent photos with it, but there are inherent limitations on resolution. If you want most of the ergonomics of a stereo microscope with better pho...

Hi Owen, What's been you experience with stacking so far? In broad terms, stereo microscopes are not ideal for stacking because of the inclined optical axis (reduces image quality and stifts the image during stacking). Alternative methods (low magnification: macro lens + focus bracketting; higher m...

Hello Everyone! I am looking to purchase a stereo zoom microscope - ideally with a DSLR attachment ability (trinocular or another method) - for larger "lumpy" subjects, where a compound microscope may not be as good and definitely do some stacking. Canon EOS would be the attachment also, I would ima...

Owen You mentioned changing your Canon EOS 500D. That is a good camera for photomicrography. It works very well with the free EOS Utility software, which lets you control everything from your computer screen. Alan Wood Hey Alan! Thank you for the advice! I will definitely be sticking with it now an...

Planarity is less critical as long as the edges can be made to focus because you can take several pictures with slightly adjusted focus and do focus stacking in post. Radical is an odd duck. I am not sure how much they make themselves and how much is made in China. Their offerings look cool but the...

Hello! This is only my third post on here and I am very, very new to photomicrography! I am sorting out my Radical compound trinocular microscope and I have some objectives which I think (I might be wrong) might be incorrect for photography. I have listed them below (I can attach images if easier!):...

Owen, we were writing at the same time :D I think that your best option is the afocal method, take a look at https://www.photomacrography.net/forum/viewtopic.php?f=8&t=15607 If your objectives don't need compensation at the eyepieces and you have enough clearance* you can also set up a short empty ...

Owen We are making good progress. What you need now is one the adapters that were common for 35mm SLRs. They are usually in 2 parts. The lower part clamps to a 25mm tube and an eyepiece fits inside it. The upper part provides a few inches of extension and has a T-mount on top. You will need a T-mou...

Owen That is an unusual adapter. Let's start with the vertical tube on the trinocular head. 1) Is the outside diameter 25mm? 2) Can you put one of the viewing eyepieces in it? If you can, is the image parfocal with the other eyepiece? Alan Wood Hey Alan, Images are attached too. I have somehow reve...