Previously, I had posted about my collection of 35mm F3.5 lenses. But the Soligor 35mm F3.5 lenses I’ve bought and tested (serial number: 9#####), have some endearing qualities worth mentioning. Continue reading Soligor 35mm F3.5 lens
I really like these 35mm F3.5 enlarger lens. They are compact, fairly sharp wide open and it is a fairly well corrected design with no colour fringing in the out of focus areas and also minimal focus shift from UV to visible light. Hence ideal for adapting for imaging. Continue reading 35mm F3.5 enlarger lens for photography
Have you ever needed different stepping adapter sizes which are not available? Have you ever wanted a female to female thread adapter to join two pieces of camera equipment together? If so, read on. You may be surprised that what you needed before is actually right under your nose; all it takes is a little ingenuity. Continue reading Stepping Rings and its many uses
This is one type of gladiolus growing in my back garden. I was curious to see what this flower looks like in the various light spectra. Continue reading Gladiolus
I have many of these Yellow chamomile flowers growing in my garden. It is interesting that while the flower looks yellow in visible light, yet its petals are very UV-dark i.e. not very UV-reflective. Continue reading Anthemis tinctoria
This cosmos was picked from my back garden. Images are all stacked for increased depth of field.
This flower is a Hypericum calycinum (aka Rose of Sharon, Aaron;s beard or Jerusalem star). As this is a rather large flower, I have had to take many images for stacking to get the entire flower into focus. Continue reading Hypericum calycinum
This flower is a Hypericum perforatum (aka St John’s Wort). It is a very interesting flower, especially in UV-induced visible fluorescence. Continue reading Hypericum perforatum
Have you wanted a full-spectrum camera? Have you wanted to try shooting in infrared or ultraviolet (UV) or astrophotography with better sensitivity to the H-alpha range but did not want to spend that much (modding a camera typically costs over US$200)? Continue reading Olympus E-PM1
The Coastal Optics 60mm F4 Apo Macro lens is a truly amazing optical engineering feat. It is apochromatic from ultraviolet, visible light, through to infrared. This means that the light from all three spectral range will be focused at the same point, so the image remains nice and sharply focused; bear in mind it is supposed to let through a significant amount of the UV, unlike other apochromatic lenses.
It is the only such lens I know of which is still in production with such an apochromatic capability – even the UV Nikkor 105mm F4.5 has no focus shift for UV and visible light (but not infrared). The Coastal Optics is also said to be very sharp from wide open. But it does have its weakness (the hotspot issue), although that can be overcome through various ways – I will talk about this later Continue reading Review: Sony A7R and Coastal Optics 60mm F4 APO Macro