I am a similar boat AlisonPAlisonP wrote:Hi folks, I am an experienced macro photographer and want to try extreme macro photography with a 10x microscope objective. I have read many of the excellent postings in this forum on microscope objectives. Several of them I have read many times to try to understand all the details. Thanks to all you dedicated extreme macro photographers for sharing all your information.
I'd like to get a little additional information and recommendations before I purchase the objective to be sure I have what I need. For background -- my macro photography subjects are Myxomycetes and very small fungi. Myxos, though, are my passion. You can see my photos online at https://www.instagram.com/marin_mushrooms/
I use a Sony A7rII with the Sony 90mm macro lens for 1:1. Most of the time I have the Raynox 250 added to that, which gets me to about 2.5:1. I focus stack manually in the field for virtually all of my photos with this lens combination. I also have the Laowa 25mm 2.5-5:1 lens which I use in a home studio; with this lens I use the Stackshot automated rail for focus stacking.
I will purchase either the Nikon 10x CFI plan achromat NA 0.25 or the Mitutuyo 10X /0.28NA Plan Apo Infinity-Corrected Long WD Objective (Edmunds Stock #46-144). Big difference in price, but I am willing to purchase the Mitty if it indeed gets significantly higher sharpness, and also because of the significantly longer working distance.
Here are the questions I am hoping someone can answer:
1. Will both of these objectives cover a full frame sensor? Or would I have to use my camera in APS-C mode? I don't mind a little vignetting because I can crop to a different aspect ratio which I frequently do anyway.
2. I have at hand and can use as the tube lens for the infinity objective the Canon 70-200mm f4. I use a Fotodiox adaptor to connect that lens with my Sony and have not had any problems with that. Because the Fotodiox adaptor adds a little length to the "tube", would I then set the Canon to a little less than 200mm to account for the length of the Fotodiox adapter? If I use this lens then my setep would be
Sony A7rII + Fotodiox adapter + Canon 70-200mm f4 + adapter ring to mount objective onto 70-200mm lens + objectiveIs that correct?
3. Would it be better to use the Raynox 250 as a tube lens? I don't have but can purchase the Raynox 150 if that is better.I have seen Rik's posting on how to attach this to a camera here: https://www.photomacrography.net/forum/ ... hp?t=35350
Thank you in advance for answers to my questions and any help you can offer.
To date I have been using a Yasuhara Nanoha Macro Lens 5:1 on a Sony A7 driven by Stackshot rail then Zerene...for my Myxos and microfossil work.
I have just purchased a second hand Mitty 10x objective, an adaptor from Rafcamera for my 70-200 f2.8 canon lens, and am waiting on a shutter release lead (as I cannot get the stackshot Universal IR shutter to fire my Canon 5D2). I am also waiting on a EF to Sony E mount adaptor so I can drive my lens combo on either of these two cameras.. I am so looking forward to operating with the extended working distance which will free up way more lighting opportunities at the very least. Will watch with more interest Alison! cheers!