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can someone tell me if i can use autofocus in nikon 3100d body with nikon 50 mm prime f/1.8g lens? if possible then how? i have recently bought one but cant use autofocus , the camera is showing me lens is not attched.Read more

Im about to visit Iceland and I would like to use a ND filter for the first time (mostly for the waterfalls). From what I see, Iceland is pretty much cloudy. My setup is sony a6500 with sigma f1.4 16mm lens. I was wondering what number of stops should I use? I thought to goRead more

I’m currently using NIKON D5600 for my untracked astrophotography, and depends on the target I need to take up to 100 exposures of 15-20 seconds each. I have a manual shutter remote and I manually click it right after the previous exposure is finished processing in the camera, but going through the captures it’s prettyRead more

Working with a smartphone, I’ve seen that JPEG shows a lot of information in the EXIF, where PNG not as much. However JPEG does some compression on the image which I’d like to avoid if not necessary as I’m trying to compute MTF and other metrics. Is there a better choice of file format whenRead more

I bought a Lumix f/1.7 25mm prime (H-H025), to use with my OM-D E10.3 When fully open on a bright sunny day, with the ISO set to 200 my shutter speed flashes at 4000 to indicate it’s out of range. If I drop the EV down to -1 the images are still washed out/overexposed. OtherRead more

I keep hearing that less megapixels = better ISO performance, because larger pixels capture more light Suppose I shot something with a 4MP sensor and then downscale it to 1MP (4-to-1 pixel binning?). Would that give me the same noise performance of a 1MP sensor of same size and technology? Since noise would average outRead more

I have a Hasselblad C12 back that has a gear synchronisation issue with the body. It has been tested on two working bodies, one of which has been serviced very recently, so the issue lies definitely in the back. I performed a CLA with this video as my basis. I turned the indicated spring loadedRead more

I just acquired a FujiFilm X-T4. It was an awesome gift from a friend. I just got done talking to a salesperson online about SD Cards, comparing two 250Gb (x2 since the camera has 2 slots), and noticing that the 250Mb/s card is 25% of the cost of 300Mb/s cards. That is a leap forRead more

Many years ago, someone showed me how to use a Luna Pro light meter to measure foot-candles. I do not recall. How do I do this?Read more

I’m looking for replacement of my Canon EF-S 55-250mm f/4-5.6 IS STM. Camera is Canon EOS 700D. Requirements: amateur photograph, especially nature and birds, mostly walking rarely hiding, focal length is enough, most of the time using 250mm, I found many situations when lens was too dark, ex. bird sitting inside tree behind branches, dummyRead more